- 1 ENGINEERING EQUATION SOLVER Creating Lists and Graphing Data To begin using EES, click on Start→All Apps→ E→ EES (folder) →EES. Example: There are two parallel connected resistors, Ra and Rb, across an ideal E=12V DC power supply.
- Theory and techniques for solving differential equations are then applied to solve practical engineering problems. Detailed step-by-step analysis is presented to model the engineering problems using differential equa tions from physical principles and to solve the differential equations using the easiest possible method.
Air Tracking of a Ground Object
Engineering Equation Solver (EES) Tutorial. In this tutorial, we will use a thermodynamics problem (courtesy of ES2310 taught by Dr. Paul Dellenback in the fall semester of 2014) to better understand how the program EES can be used to help solve problems. The solution to the problem is shown below to help the reader better understand the.
Category:Engineering
Students are asked the question: 'How can a camera, mounted on a helicopter, be used to track the location of a ground-based object?'
The discussion of ideas will touch on many different aspects of mathematics including 2D and 3D co-ordinates, the calculation of distance and vectors, but the main focus of this activity is the algebraic skills of being able to:
- understand how 2D and 3D co-ordinate geometry is used to describe lines, planes and conic sections within engineering design and algebra
- understand the methods of linear algebra
- know how to use algebraic processes
- comprehend translations of common realistic engineering contexts into mathematics
There are two interactive files to accompany the tasks. The first practises using the scalar product, the second graphs the distance from a fixed point to a helicopter moving in a straight line.
Calculating Power of JCB Dieselmax Engines
Category:Engineering
This resource shows the application of mathematics in mechanical engineering and construction machinery. Students encounter the formulae used to calculate the power of the engine which was used to power the JCB Dieselmax LSR car to a world land speed record of 350mph in August 2006.
The activities cover:
- the calculation of power
- the plotting of engine power vs engine speed
- calculating the equation of a straight line
Extension activities require students to:
- create a spreadsheet to plot automatically the power curve of an engine
- compare the power curves of a turbocharged engine and a non-turbo charged engine
Detailed notes and examples are provided, together with learning outcomes and assessment criteria.
Functions and Graphs
Category:Mathematics
These resources cover aspects of functions and graphs often used in the field of engineering. They include descriptions of the hyperbolic function and identities, the logarithm function and its graph as well as the graphs of the trigonometric functions.
Comprehensive notes, with clear descriptions, for each resource are provided, together with relevant diagrams and examples. Students wishing to review, and consolidate, their knowledge and understanding of functions and graphs will find them useful, as each topic includes a selection of questions to be completed, for which answers are provided.
Power Demand
Category:Engineering
One important area of civil engineering iselectrical power production. In order to plan for future building, which may take many years to prepare, design and construct, demand forecasts are often used to indicate the quantity and size of new power stations required.
Students are asked: 'How can you predict future power requirements? ' To solve the problem, students are required to complete a table by substituting values into a formula and plot a graph. The interactive file can be used to demonstrate some of the important aspects of growth and decline. The activity offers good opportunities to consolidate work on geometric progression.
The mathematics covered in this activity are:
- be able to write the rule for a sequence in symbolic form
- change the subject of a formula
- be able to plot data
- be able to draw a graph by constructing a table of values
- solve problems using the laws of logarithms
- solve problems involving exponential growth and decay
F1 Challenge
Category:Engineering
In this set of teaching materials students are required to build and modify a model F1 car. The challenge involves the construction and testing of a scale model F1 car powered by compressed gas.
Teachers' notes and the starter activity are included. Note that the web address for the F1 challenge is www.f1inschools.co.uk which provides the latest information about the challenge and the resources available. Video clips that might be used in the starter activity are available from this website.
In the starter activity students have to decide whether their design is built for speed or acceleration.
Xbox 360 cant download game updates. Students are required to consider friction, mass, and streamlining to help in the construction of an effective vehicle. Skills of measurement, analysis, and application are required in order to simulate acceleration.
Students then calculate the energy of moving objects to show how important it is to understand how the mass of the model and the energy of the gas engine will influence speed. Students use distance-time graphs, use formulae connecting force, mass and acceleration and analyse graphical data in order to refine and improve the design for the model car.
Formula One Race Strategy
Category:Engineering
This resource shows the application of mathematics within F1 racing. Students are required to use mathematical models to develop race strategy, deciding how much fuel cars will start the race with and the laps on which the car will stop to refuel and change tyres.
Students deal with formulae, rates such as fuel consumption, the effects of weight on these rates, and lap times. Extension activities require students to use the solution to an integral formula to calculate different stint times and to analyse different strategies.
Detailed notes and examples are provided and there are extension activities for students to complete, together with learning outcomes and assessment criteria.
Heat Loss from Buildings
Category:Mathematics
In this activity, students are asked the question: 'How can the most efficient design be determined, taking both building and running costs into account?'
Students consider thermal conductivity of different materials graphically to help decide which material should be used. There follows an explanation of the concept of kilowatt hours.
A video accompanies the resource explaining thermal conductivity.
The mathematics covered in this activity is:
- solve problems involving area, perimeter and volume
- use scale drawings
- work with formulae for the areas and perimeters of plane shapes
- work with formulae for surface areas and volumes of regular solids
- be able to draw graphs by constructing a table of values
- be able to extract information from a graph
Understanding the Motion of the Wheels
Category:Engineering
This activity features the application of mathematics within the field of mechanical engineering by exploring the design and construction of wheels, to be used to challenge a land speed record. These principles also apply in engines and gear-boxes, which typically consist of rotating machinery and understanding the loads imposed on components is of great importance for safety considerations.
The mathematics used by students in this activity includes:
- using frames of reference
- parametric equations of a circle and cycloid
- the calculation of velocity and acceleration to explore acceleration
- the equations relating to forces and stresses on a wheel
Detailed notes and examples are provided and there are extension activities for students to complete, together with learning outcomes and assessment criteria.
Algebra
Category:Mathematics
These resources cover a wide range of algebraic topics, many of which are used in the field of engineering. The topics covered are:
- solving linear equations
- solving simultaneous equations
- solving quadratic equations
- dealing with inequalities
- the modulus symbol
- graphical solutions of inequalities
- the laws of logarithms, the exponential function and solving equations
- Sigma notation
- partial fractions
- rearranging formulas
- factorials and
- the laws of indices
Comprehensive notes, with clear descriptions, for each resource are provided, together with relevant diagrams and examples. Students wishing to review, and consolidate, their knowledge and understanding of algebraic principles will find them useful, as each topic includes a selection of questions to be completed, for which answers are provided.
Rearranging Equations
Category:Engineering
These materials cover two sessions designed to take students through the basic principles of manipulating and solving equations. The students work through building an equation, checking the equation, and solving the equation. They are then asked to create their own equation and swap it with a partner to be ‘undone’ step. Finally, students move to an activity which uses cards to further reinforce how equations are rearranged.
The resource includes detailed lesson plans and teacher notes for the sessions which are designed that students are able to:
- develop confidence with the notation used in equations develop the use of brackets by creating and solving equations
- develop the skills needed to change the subject of a range of different equations
- develop an understanding of the nature of an equation and the principles that are applied when rearranging them
- learn from each other
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- By Michael B. Cutlip, Mordechai Shacham
- Published Aug 28, 1998 by Pearson.
Book
- Sorry, this book is no longer in print.
About
Features
- Provides realistic problems in all the basic subject areas of chemical engineering which demonstrate the utility of numerical methods.
- Introduces the application of all the basic numerical methods in the first three chapters and applies them to various fields of chemical engineering in the remaining chapters.
- Provides a fully functional version of the popular and widely-used POLYMATH™ software on a Companion Website which provides:
Extensive selection of complete or partial solutions to book problems that utilize POLYMATH, Excel, and MATLAB.
Detailed writeups of ten problem solutions by knowledgeable professionals that utilize Excel, Maple, Mathcad, MATLAB, Mathematica, and POLYMATH and includes all particular program solution files.
Access to a specially priced version of an educational version of POLYMATH that can be installed on personal computers with any WindowsTM operating system.
- Includes a chapter on regression and correlation of data which concisely introduces this subject while also covering the application of applied statistics in interpretation of results.
- Can be used with any mathematical software package which has capabilities for the basic numerical methods.
- Chapters on fluid mechanics, heat, and mass transfer have problems developed on the transport phenomena approach.
- Chapter material is presented in an order that follows the logic typically employed in basic textbooks in each subject area, including both fundamental and applied approaches.
- Presents all of the equations necessary for problem solutions.
- Organization of chapters follows the course sequence structure of the curriculum of most chemical engineering departments.
- Reference website:
www.polymath-software.com
Description
- Copyright 1999
- Dimensions: 7' x 9-1/4'
- Pages: 496
- Edition: 1st
- Book
- ISBN-10: 0-13-862566-2
- ISBN-13: 978-0-13-862566-5
Rivera knucklehead tre manual. --A great companion book including interactive software for students and professional engineers who want to utilize problem solving software to effectively and efficiently obtain solutions to realistic and complex problems.
--An invaluable reference book that discusses and illustrates practical numerical problem solving in the core subject areas of Chemical Engineering.
Problem Solving in Chemical Engineering with Numerical Methods provides an extensive selection of problems that require numerical solutions from throughout the core subject areas of chemical engineering. Many are completely solved or partially solved using POLYMATH(c) as the representative mathematical problem-solving software. Selective problems solved by Excel™ and MATLAB™. Ten representative problems are also solved by Excel, Maple™, Mathcad™, MATLAB, and Mathematica™.
Practical numerical analysis techniques discussed and applied include:
- curve fitting by polynomials and cubic splines with statistical analysis
- linear regression and nonlinear regression with statistical analysis
- simultaneous nonlinear equations
- simultaneous ordinary differential equations (including stiff systems)
- differential-algebraic equation systems
- partial differential equations (using the numerical method of lines)
Topical areas are organized by chapter
- Basic Principles and Calculations
- Regression and Correlation of Data
- Advanced Techniques in Problem Solving
- Thermodynamics
- Fluid Mechanics
- Heat Transfer
- Mass Transfer
- Chemical Reaction Engineering
All problems are clearly organized and all necessary data are provided. Key equations are presented or derived. Practical aspects of efficient and effective numerical problem solving are emphasized. Many complete solutions are provided within the text.
Companion web site provides:
- Extensive selection of complete or partial solutions to book problems that utilize POLYMATH, Excel, and MATLAB.
- Detailed writeups of ten problem solutions by knowledgeable professionals that utilize Excel, Maple, Mathcad, MATLAB, Mathematica, and POLYMATH and includes all particular program solution files.
- Access to a specially priced version of an educational version of POLYMATH that can be installed on personal computers with any Windows™ operating system.
Extras
Companion Site
The CD-ROM has been replaced with a Companion Site.
Engineering Equation Solver
User name: vapor
Password: pressure
Sample Content
Table of Contents
1. Basic Principles and Calculations.
2. Regression and Correlation of Data.
3. Advanced Techniques in Problem Solving.
4. Thermodynamics.
5. Fluid Mechanics.
6. Heat Transfer.
7. Mass Transfer.
8. Chemical Reaction Engineering.
Appendix A.
Appendix B.
Appendix C.
Appendix D.
Appendix E.
Appendix F.
Index.
Preface
Preface
Intended Audience
This book is for the chemical engineering student or the professional engineer who is interested in solving problems that require numerical methods by using mathematical software packages on personal computers. This book provides many typical problems throughout the core subject areas of chemical engineering. Additionally, the 'nuts and bolts' or practical applications of numerical methods are presented in a concise form during example problem solving, which gives detailed solutions to selected problems.
Background
The widespread use of personal computers has led to the development of a variety of tools that can be utilized in the solution of engineering problems. These include mathematical software packages like MathCAD, Maple, Mathematica, Matlab,Polymath, and spreadsheets like Excel. While there is great potential in the hands of individual PC users, often this potential is not well developed in current engineering problem solving.
In the past the computer was used only for the difficult tasks of rigorous modeling and simulation of unit operations, processes, or control systems, while the routine calculations were carried out using hand-held calculators (or spreadsheet programs more recently), using essentially the same techniques that were used in the slide rule era. Limiting the use of the computer solely to the difficult tasks was justified before the introduction of interactive numerical packages because the use of the computer was very time consuming. A typical computer assignment in that era would require the student to carry out the following tasks: (1) Derive the model equations for the problem at hand, (2) find an appropriate numerical method to solve the model, (3) write and debug a FORTRAN program to solve the problem using the selected numerical algorithm, and (4) analyze the results for validity and precision.
It was soon recognized that the second and third tasks of the solution were minor contributions to the learning of the subject matter in most chemical engineering courses, but they were actually the most time consuming and frustrating parts of a computer assignment. The computer enables students to solve realistic problems, but the time spent on the technical details that were of minor relevancy to the subject matter was much too long.
The introduction of interactive numerical software packages brought about a major change in chemical engineering calculations. This change has been called a 'paradigm shift' by Fogler.2 Using those packages the student's (or the practicing engineer's) main task is to set up the model equations. The interactive program provides accurate solutions to these equations in a short time, displaying the results in graphical and numerical forms. The meaning of the paradigm shift, however, is that using the old calculation techniques with the new computer tools brings very little benefit. This is emphasized in the following observation made by deNevers and Seader1: 'Since the advent of digital computers, textbooks have slowly migrated toward computer solutions of examples and homework problems, but in many cases the nature of the examples and problems has been retained so that they can be solved with or without a computer.'
In most of the examples and problems provided in this book, new solution techniques are presented that require the use of the computer. Thus the full benefits of a computer solution can be gained even for routine, simple problems, not just for complicated ones.
In spite of many available numerical problem-solving packages, advanced problem solving via personal computers continues to be under utilized in chemical engineering education. A recent survey by Jones5 has indicated that 'across the country, computers are usually not used effectively in undergraduate engineering science courses. Often they are not used at all. Problem solving approaches and calculation methods are little influenced by the availability of computers.' There are several major reasons for this situation.
First, many of the current engineering textbooks and reference books have been very slow to react to the enhanced problem-solving capabilities that are currently available. Unfortunately, the current textbooks in most engineering subject areas have been slow to react to this emerging capability. The lack of properly framed standard problems in various engineering disciplines is accompanied by a lack of faculty interest in the use of new tools and the creation of appropriate problems that utilize these tools.
Another important reason for the lack of mathematical software usage for advanced problem solving is the actual cost of the software for individual students. While there are many educational benefits to having problem solving close at hand on student-owned personal computers, often the cost to the individual students is prohibitively high. Fortunately, the costs to major colleges and universities for site licenses for the use of software only in computer labs is much more reasonable. However, this pricing structure forces students to use problem-solving software only in computer labs and does not allow interactive use of the software at other locations. Thus advanced problem-solving capabilities are not currently as close at hand as the nearest personal computer.
Finally, there is a significant learning curve to most of the advanced problem-solving software. This requires users to become familiar with a command structure that is often not intuitive and thus difficult to use. This is a significant impediment to student, professional, and faculty use of many packages.
Purposes of This Book
The main purpose of this book is to provide a comprehensive selection of chemical engineering problems that require numerical solutions. Many problems are completely or partially solved for the reader. This text is intended to be supplementary to most of the current chemical engineering textbooks, which do not emphasize numerical solutions to example and posed problems. This book is highly indexed, as indicated in Tables 1-9 at the end of this preface. The reader can only consider a particular subject area of interest or the application of a particular numerical method in actual problem solving. In either area, problems or methods, the book gives concise and easy-to-follow treatments.
The problems are presented in a general way so that various numerical problem-solving computer packages can be utilized. Many of the problems are completely solved so as to demonstrate a particular problem-solving approach. In other cases, problem-solving skills of the reader need to be applied. This book has been designed for use with any mathematical problem solving package. The reader is encouraged to use the mathematical software package of his or her choice to achieve problem solutions. However, the POLYMATH package has been used as an example package, and a complete version of POLYMATH is included in the CD-ROM that accompanies this text. This allows the convenient use of POLYMATH throughout the book, as many of the problems have some part of the solution in POLYMATH files that are available on the CD-ROM.
General Problem Format
All problems presented in the book have the same general format for the convenience of the reader. The concise problem topic is first followed by a listing of the chemical engineering concepts demonstrated by the problem. Then the numerical methods utilized in the solution are indicated just before the detailed problem statement. Typically a particular problem presents all of the detailed equations that are necessary for solution, including the appropriate units in a variety of systems, with Système International d'Unités (SI) being the most commonly used. Physical properties are either given directly in the problem or in the appendices.
Students
Students will find the chapter organization of the book, by chemical engineering subject areas, to be convenient. The problems are organized in the typical manner in which they are covered in most courses. Complete solutions are given to many of the problems that demonstrate the appropriate numerical methods in problem solving. Practice and application of various numerical methods can be accomplished by working through the problems as listed in Table 9.
Practicing Engineers
Engineers in the workplace face ever-increasing productivity demands. Thus the concise framework of the problems in this book should aid in the proper formulation of a problem solution using numerical methods.
Faculty
This book can assist faculty members in introducing numerical methods into their courses. This book is intended to provide supplementary problems that can be assigned to students. Many of the problems can be easily extended to open-ended problem solving so that critical thinking skills can be developed. The numerical solutions can be used to answer many 'what if º ' type questions so students can be encouraged to think about the implications of the problem solutions.
Chemical Engineering Departments
Departments are encouraged to consider adopting this book during the first introductory course in chemical engineering and then utilize the book as a supplement for many of the following courses in the curriculum. This allows an integrated approach to the use of numerical methods throughout the curriculum. This approach can be helpful in satisfying the Accreditation Board for Engineering and Technology (ABET) requirements for appropriate computer use in undergraduate studies. A first course in numerical methods can also utilize many of the problems as relevant examples. In this application, the book will supplement a standard numerical methods textbook. Students will find the problems in this book to be more interesting than the strictly mathematical or simplified problems presented in many standard numerical analysis textbooks.
Educational Resources on CD-ROM
A CD-ROM is provided that contains additional learning resources including a complete operational version of the POLYMATH Numerical Computation Package which can be installed on a reader's personal computer to enable efficient interactive problem solving. All illustrative solved problems are available from the CD-ROM for execution and modification using POLYMATH. Ten representative book problems have also been solved by knowledgeable professionals with Excel, Maple, Mathcad, Mathematica, MATLAB, and POLYMATH. Detailed writeups and the files to solve these problems with these packages are included on the CD-ROM. The icon at the beginning of this paragraph is used to designate a CD-ROM resource throughout the book. For many problems, tabulated data for individual problems are provided as input files to POLYMATH, thereby eliminating time-consuming data entry. The complete details on the CD-ROM are given in Appendix F.
Book Organization
Chapter 1, 'Basic Principles and Calculations,' serves a dual purpose. The chapter introduces the reader to the subject material that is typically taught in a first chemical engineering course (in most universities called Material and Energy Balance, or Stoichiometry). Additionally, this chapter introduces numerical solutions that are presented using the POLYMATH Numerical Computation Package. This material can also be used in a separate 'Introduction to Personal Computers' course that can be given in parallel to the first chemical engineering course. For the past three years at Ben-Gurion University, the material from Chapter 1 of this book has been taught in the second semester of the first year, in parallel with the second part of the material and energy balance course. The students are introduced to the POLYMATH software in two two-hour lectures and two one-hour computer lab sessions. During the lectures and lab sessions, Problems 1.1, 1.3 and 1.13 are presented to introduce students to the different programs of POLYMATH. After this workshop, students are expected to use POLYMATH without additional help.
Chapters 2 and 3 are not associated with any particular required course in the chemical engineering curriculum. Chapter 2, 'Regression and Correlation of Data,' presents advanced statistical techniques for regression of experimental data. Students can be encouraged to complete this chapter as part of a statistics course or as preparation for the chemical engineering laboratory. Chapter 3, 'Advanced Techniques in Problem Solving,' provides the background necessary for solution of more complicated problems, such as stiff differential equations, two-point boundary value problems, and systems of differential-algebraic equations using interactive numerical software packages. This chapter can be integrated into the curriculum or covered as part of a separate numerical analysis course. The titles of the remaining chapters clearly indicate in which courses the problems can be used.
The fully or partially solved problems demonstrate solution methods that are not included in regular textbooks. Some of them also show advanced solution techniques that may not be obvious to the casual user. Table 3 lists these special techniques and the problem numbers in which they are demonstrated or required.
Book Notation
Because of the wide variety of problems posed in this book, the notation used has been standardized according to one of the major Prentice Hall textbooks in the various subject areas whenever possible. These books are summarized in Table 10.
The POLYMATH Numerical Computation Package
We have authored the POLYMATH package to provide convenient solutions to many numerical analysis problems, including the chemical engineering problems that are presented in this book. The first PC version of POLYMATH was published in 1984, and it has been in use since then in over one hundred universities and selected industrial sites mainly in the United States and Israel. The initial version included with this book, POLYMATH 4.02, was released in May of 1998. This version executes in computers with DOS (and Windows) operating systems. The package contains the following programs:
Ordinary Differential Equations Solver
Nonlinear Algebraic Equations Solver
Linear Algebraic Equations Solver
Polynomial, Multiple Linear, and Nonlinear Regression Program
The programs are extremely easy to use, and all options are menu driven. Equations are entered in standard form with user-defined notation. Results are presented in graphical or tabular form. No computer language is used, and a manual is not required. All problems can be stored on disk for future use. A sophisticated calculator and a general unit conversion utility are available from within POLYMATH upon request.
Current information on the latest POLYMATH software is available from http://www.polymath-software.com/.
Web Site: http://www.polymath-software.com/book
This site on the World Wide Web (WWW) will be maintained by the book authors to provide any corrections or updates to this book. The site will also provide information about where the CD-ROM may be reordered in the event that it has become damaged, outdated, or lost. Details on the latest POLYMATH software will also be available on the WWW, allowing inexpensive software upgrades to be downloaded. Additionally, the site may provide computer files for various solved problems for the convenient of readers to wish to use other mathematical software packages with this book.
Acknowledgments
We would like to express their appreciation to our wives and families who have shared the burden of this effort, which took longer than anticipated to complete. We particularly thank Professor H. Scott Fogler for his encouragement with this book effort and with the continuing development of the POLYMATH. Numerical Analysis Package. We are indebted to our colleagues from the American Society for Engineering Education (ASEE) Chemical Engineering Summer School who permitted reproduction of their problem solutions on the CD-ROM. We thank Nancy Neborsky Pickering for initially learning the FrameMaker desktop publishing package and for entering the initial materials into the book format. Leslie Wang provided considerable valuable feedback on most chapters of the book. Additionally, we appreciate the input and suggestions of our students, who have been subjected to preliminary versions of the problems and have endured the various prerelease versions of the POLYMATH software over the years. During the 17 years that POLYMATH has been in use, many of our colleagues provided advice and gave us help in revising and improving this software package. In particular, we would like to acknowledge the assistance of Professors N. Brauner, H. S. Fogler, B. Carnahan, D. M. Himmelblau, J. D. Seader, and E. M. Rosen. H. S. Fogler and N. Brauner have also provided some of the problems included in the book and assisted with their solutions.
Development of a package such as POLYMATH and this book is an expensive endeavor in both resources and time. We are indebted to our universities: The Ben-Gurion University of the Negev and the University of Connecticut for the continuous support we have received. M. S. spent several summers and a sabbatical year at the University of Michigan. The first draft of this book was written during the stays at Michigan, and the support of the College of Engineering of the University of Michigan is sincerely appreciated. M. B. C. spent much of a sabbatical from the University of Connecticut and several summers on the preparation of book materials.
The routine maintenance and development of the POLYMATH package has been done by Orit Shacham. For the last 10 years she has been spending most of her vacations fixing bugs and writing new code for still another version of POLYMATH. She continues to amaze us by the speed and precision with which she converts ideas into computer code.
The first draft of this book was typed (and retyped) by Michal Shacham. She took several months of vacation from her job to learn to use various word processors and graphic programs and type the book. The draft she typed became the basis for class testing and refinement of the book.
Michael B. Cutlip
Mordechai Shacham
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