when,Ma=0.95,problems of airfoil compution in cfx
hi all
when Ma=0.95, I am computing an airfoil with a gap , Phiscal time scale=0.005, farfield rule=30 meters , the normal pressure force result is not converging , the transonic computing is so hard in cfx ,and how do I deal with it, my friends, help me!!! 
Re: when,Ma=0.95,problems of airfoil compution in
Hi,
Start off with a simpler simulation using possibly upwind differencing, a zero equation turbulence model and double precision numbers. Use that simulation as an initial condition for your final run to convergence with high res differencing and a better turbulence model. Transonic simulations are always tricky to converge. There area a few other suggestions in the documentation. Regards, Glenn 
Re: when,Ma=0.95,problems of airfoil compution in
than you very much !

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