Appendix A.1: Introduction to EES EES (pronounced 'ease') is an acronym for Engineering Equation Solver. The basic function provided by EES is the numerical solution of non-linear algebraic and differential equations. EES is an equation-solver, rather than a programming language, since it does not require the user to enter instructions for iteratively solving non-linear equations. EES provides capability for unit checking of equations, parametric studies, optimization, uncertainty analyses, and high-quality plots. It provides array variables that can be used in finite-difference calculations. In addition, EES provides high-accuracy thermodynamic and transport property functions for many fluids and solid materials that can be integrated with the equations. The combination of all of these capabilities in one program makes EES a very powerful tool for solving heat transfer problems. A commercial or professional version or academic site license of EES can be obtained from: F-Chart Software http://fchart.com email: [email protected]A.1.1 Getting Started To start EES, double-click on the EES program icon (shown above) or on any file created by EES and having the *.ees filename extension. You can also start EES from the Windows Run command in the Start menu by entering EES and clicking the OK button. EES begins by displaying a dialog window, which shows registration information, the version number and other information. Click the OK button to dismiss the dialog window. Detailed help is available at any time while working with EES; pressing the F1 key will bring up a Help window relating to the foremost window. Clicking the Contents button will present the Help index and clicking on a green underlined word will provide help relating to that subject. EES commands are distributed among ten pull-down menus (Figure A.1-1). A brief summary of their functions follows. Figure A.1-1:Pull-down menus. The File menu provides commands for opening and saving work files and libraries, and for printing. The Load Textbook command in this menu reads the problem disk developed for this text and creates the Heat Transfer menu to the right of the Help menu for easy access to EES problems accompanying this text. The Editmenu provides the editing commands to cut, copy, and paste information. The Searchmenu provides Findand Replacecommands for use in the Equations window.
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