Spoilers

ZakBristol · February 9, 2018, 19:03

Hi,

I have been trying for sometime to model an aerfoil with a spoiler.

Most of the runs become unstable to simply breaks.

Can anyone advice me on what can I do to improve the stability of these runs given that I have separated flow. What mesh setting should I sue, turbulence modeling version or anything else that may help.

Many thanks

fluid23 · February 12, 2018, 14:27

SST k-omega is usually a good choice for flows with adverse pressure gradients that cause separation. If you have a lot of separated flow, you might get better convergence and results by running a transient simulation and time-averaging your results.

February 9, 2018, 19:03	Spoilers	#1
ZakBristol Member Zack Join Date: Dec 2015 Location: uk Posts: 35 Rep Power: 10	Hi, I have been trying for sometime to model an aerfoil with a spoiler. Most of the runs become unstable to simply breaks. Can anyone advice me on what can I do to improve the stability of these runs given that I have separated flow. What mesh setting should I sue, turbulence modeling version or anything else that may help. Many thanks

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February 12, 2018, 14:27		#2
fluid23 Senior Member Matt Join Date: Aug 2014 Posts: 947 Rep Power: 18	SST k-omega is usually a good choice for flows with adverse pressure gradients that cause separation. If you have a lot of separated flow, you might get better convergence and results by running a transient simulation and time-averaging your results.