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van der Waals Isotherm Plots

Sun, 12/07/2014 - 11:52 am

This package provides a way to show the pressure - molar volume isotherms for a range of gases that follow the van der Waals gas law. It was created as part of assignment for a course on thermodynamics, specifically dealing with mechanical equations of state for real gases.

Two isotherms are shown on a main graph and an inset. The primary (black) curve is around the critical temperature and a second (blue) curve is typically lower than this. You can adjust the reduced temperature for either isotherm. The main plot is in bar versus molar volume. The inset plot is in reduced pressure versus reduced molar volume. You can add additional gases by editing in the table.

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http://svn.igorexchange.com/viewvc/packages/vdWIsothermPlots/

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