# compressible flow of water vapor

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 February 13, 2012, 13:46 compressible flow of water vapor #1 New Member   Florian Join Date: Jan 2011 Location: Mannheim, Germany Posts: 24 Rep Power: 7 Hi all, is there a possibility to solve the rhoPorousMRFLTPimpleFoam with steam (water vapor) as fluid ???? Or any other solver??? I don't want to simulate condensation or evaporation. Only the folw of vapor. Some details about the simulation: I want to simulate the flow of water vapor in a turbocharger. The pressure at the inlet is about 2.5 bar abs. and at the outlet 1 bar. The velocity in the turbocharger is about 200 m/s - 300 m/s (no supersonic). At the moment I simulate it with air. But water vapor is rot a ideal gas. Some ideas???? kind regards Florian

 February 14, 2012, 14:16 #2 New Member   Florian Join Date: Jan 2011 Location: Mannheim, Germany Posts: 24 Rep Power: 7 Hi all, I changed my thermophysicalProperties into the following: FoamFile { version 2.0; format ascii; class dictionary; location "constant"; object thermophysicalProperties; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // thermoType hPsiThermo>>>>; mixture { specie { nMoles 1; molWeight 18; } thermodynamics { Cp 2080; Hf 0; } //for steam with p=1.75bar and T=150°C transport { mu 1.414e-5; Pr 0.985; } } I'm not sure if this is a good way to simulate water vapor... I am confused about the Hf (User Guide: heat of fusion). What is the heat of fusion for water vapor????? What is this exactly?? kind regards Florian

 February 16, 2012, 04:58 #3 New Member   Florian Join Date: Jan 2011 Location: Mannheim, Germany Posts: 24 Rep Power: 7 Hi all, the results with this thermophysicalProperties looks reasonable for the density, pressure and temperature. kind regards Florian

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