|April 27, 2007, 04:42||
I have been running MRF computations of a 2-bladed fan in a duct. The fluid is air. The Mach numbers relative to the blade are significant (i.e. 0.5-0.6) only in a small region in the vicinity of the blade tip.
I am unsure as to whether to specify constant density or ideal-gas model in the "Materials" menu.
Will selecting ideal gas compromise the accuracy in the regions (which form the bulk of the computational domain) of low Mach numbers?
Basically I would like to know which would be the more accurate of the two options: constant density or ideal gas?
Looking forward to advice.
Thanks in advance
K I Chan
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