Engineering Equation Solver 7 & 8

EES ('ease') is a revolutionary program which will change the way you think and work. EES provides capabilities not found in any other equation solving program. EES will solve large sets of non-linear algebraic and differential equations. EES also provides publication-quality plots, linear and non-linear regression, optimization, unit conversion and consistency checking, and uncertainty analyses. Built-in functions are provided for thermodynamic and transport properties of many substances, including steam, air, refrigerants, cryogenic fluids, JANAF table gases, hydrocarbons and psychrometrics. Additional property data can be added. EES also allows user-written functions, procedures, modules, and tabular data. EES can also interface with REFPROP and other NIST fluid property programs. REFPROP provides the most advanced methods for estimating the properties of mixtures. The Professional version allows many other additional features including animation and the ability to make stand-alone programs.

Solves up to 6,000 simultaneous non-linear equations (12,000 in pro version)
Equations can be entered in any order with built-in editor
Extremely fast computational speed
High accuracy thermodynamic and transport functions for many fluids
T-s, P-v, P-h, and other types of property plots
SI and English units
Unit conversion and automatic unit consistency checking
Parametric studies with spreadsheet-like table
Single and multi-variable optimization capability
User-defined functions, procedures, modules, subprograms and DLLs
If-Then-Else and other logic constructs
Multi-dimensional optimization
Uncertainty analysis
Linear and non-linear regression
Automatic interpolation from tabular data files
Professional plotting (2-D, contour, and 3-D) with automatic updating
LaTeX, PDF, as well as printed output
Graphical user input/output capabilities with Diagram window

homepage - http://www.fchart.com/ees/ees.shtml

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