Non-nominal conditions in a radial turbine -- CFD Online Discussion Forums

December 29, 2010, 09:04	Non-nominal conditions in a radial turbine	#1
Petro New Member Pedro Nunes Join Date: Nov 2010 Posts: 3 Rep Power: 16	Hello there! I'm simulating a radial turbine. For nominal conditions (no angle of incidence) the calculations perform well. When i switch to non-nominal conditions (with a bit of incidence), the results are unrealistic (the efficiency is higher than for the ideal case). I also have to decrease the under-relaxation factors to obtain convergence. Should I use a unsteady simulation to predict vortex shedding?

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