FluidDemo.m

% Demo script for Fluid class
%
%------------------------------------------------------------------------------
% Copyright (c) 2014, Tyler Voskuilen
% All rights reserved.
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% Redistribution and use in source and binary forms, with or without 
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% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 
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%------------------------------------------------------------------------------

clear all
close all
clc

% Load fluid data from NIST (you only have to do this once per fluid, then the
% data is saved in the @Fluid folder)
Fluid.GetNISTData();

% Use a GUI for your scripts to select the fluid type if it changes often
fluid_name = Fluid.SelectFluidGUI();

% or just declare the fluid name manually to avoid the GUI
% fluid_name = 'H2';

% Create a Fluid
f = Fluid(fluid_name);

% Get the density of that fluid
density1 = f.Density({10,'bar'},{280,'K'},'g_L');

% Or using default units (bar, K, kg/m3 or g/L)
density2 = f.Density(10,280);

% Or using arrays for P and T to get a density array
P = 10:1:20;
T = 300*ones(size(P));
density3 = f.Density(P,T);

% If you want the partial derivative of density with respect to P and T
% to use for uncertainty calculations
[rho, drho_dP, drho_dT] = f.Density(10,280);