The appearance of a ground surface can play an important role in the flow structures for the flowspast a flat plate. We conduct two-dimensional numerical simulations on viscous flows past a flat plate inclinedat an angle of attack of 20◦with ground effects using a finite-volume method. Results show that the effects onthe separated flow from the ground are highly dependent on the gap (G) between the plate and the ground. Asthe gap decreases, the strength of vortices generated from the trailing edge is restrained, which is consistentwith experimental observations. Further decrease in the gap even eliminates the vortex shedding and yieldsa steady flow. It is also found that the flow between the gap can either be accelerated at large gap ratios(G/L>1,Gis the gap,Lis the plate length), or be decelerated at small gap ratios (G/L

EB00000003388K

Available

• Ground effects on separated laminar flows past an inclined flat plate