Solver For low subsonic speed simulation -- CFD Online Discussion Forums

January 28, 2011, 08:45	Solver For low subsonic speed simulation	#1
firda New Member Firdaus Join Date: Nov 2010 Posts: 4 Rep Power: 16	Hai,. Anyone can help me to solve problem regarding my UAV simulation.I got confusion about the value of drag coefficient (CD) since the result obtain from Fluent shows very high value (about 0.026 at 0 angle of attack,Result from wind tunnel and Star CD are 0.018 and 0.016 respectively ) but the value for CL almost the same like wind tunnel and StarCD .For your information, the design speed for my UAV is at 35m/s or 0.1 Mach number and consider as low subsonic speed. The solver that i used in this simulation is Coupled Explicit with Spalart Almaras. Anyone can help me please.

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