CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   Define an equation of State (http://www.cfd-online.com/Forums/cfx/99688-define-equation-state.html)

FloMol April 9, 2012 19:26

Define an equation of State
 
Hi,

I struggle since days to see a density in my simulation. (a supersonic 300K gas jet of H2 in pipes with a low background pressure of 1000 Pa roughly)

I simulate this with H2 as "constant property gas" how I can set the density by using the built of Redlich Kwong equation?

I tried all the tab without success and the help index doesn't help. Do i need to define the density expression before running the simulation ? Because i get strange results ( such as negative absolute pressure) despite my 0 Pa reference pressure.

Thx

Florian M.


All times are GMT -4. The time now is 20:39.