What is the advantage of using ideal gas in CFD simultion..?

shiva102 · January 30, 2015, 10:25

which problem physics i should/should not consider the ideal gas as my medium...?

lcarasik · January 30, 2015, 14:41

Use ideal gas when your fluid can be approximated as an ideal gas, don't use the ideal gas approximation when it isn't one.

jpando · January 30, 2015, 14:50

Basically you want to use the model when your fluid is compressible in the ideal gas region of the material, usually low to medium pressures (encompassing atospheric for air). This is good if you want to capture bouyancy forces and density changes.

January 30, 2015, 10:25	What is the advantage of using ideal gas in CFD simultion..?	#1
shiva102 New Member SIVAKUMAR Join Date: Jul 2013 Location: coimbatore Posts: 13 Rep Power: 13	which problem physics i should/should not consider the ideal gas as my medium...?

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January 30, 2015, 14:41		#2
lcarasik Senior Member Lane Carasik Join Date: Aug 2014 Posts: 692 Rep Power: 15	Use ideal gas when your fluid can be approximated as an ideal gas, don't use the ideal gas approximation when it isn't one.

January 30, 2015, 14:50		#3
jpando New Member Join Date: May 2012 Posts: 26 Rep Power: 14	Basically you want to use the model when your fluid is compressible in the ideal gas region of the material, usually low to medium pressures (encompassing atospheric for air). This is good if you want to capture bouyancy forces and density changes.