Solution scheme: 1st, 2nd order, etc in momentum eqs

nottern · May 8, 2012, 23:17

Hi, I have a question.

When I choose a solution scheme for the momentum equations, which variables are going to be interpolated in that way?. Just the velocities? The pressure too? Or the pressure follows the "pressure scheme"? (in fluent)

And, when I have big fluctuations in velocity, I'm aware that the 2nd order aproach will give me a more realistic solution. But, can I get a good solution with a 1st order scheme just refining the mesh?

Thanks in advance

madhukar_m_rao · May 11, 2012, 01:30

2nd order spatial discretization is recommended.

May 8, 2012, 23:17	Solution scheme: 1st, 2nd order, etc in momentum eqs	#1
nottern New Member mzamora Join Date: Apr 2011 Posts: 3 Rep Power: 15	Hi, I have a question. When I choose a solution scheme for the momentum equations, which variables are going to be interpolated in that way?. Just the velocities? The pressure too? Or the pressure follows the "pressure scheme"? (in fluent) And, when I have big fluctuations in velocity, I'm aware that the 2nd order aproach will give me a more realistic solution. But, can I get a good solution with a 1st order scheme just refining the mesh? Thanks in advance

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May 11, 2012, 01:30		#2
madhukar_m_rao New Member Dr. Madhukar M Rao Join Date: Nov 2010 Location: Bangalore, India Posts: 21 Rep Power: 15	2nd order spatial discretization is recommended.