p9.120_solution - FLOWLAB SOLUTION 9.120 Investigate the...

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FLOWLAB SOLUTION 9.120 Investigate the differences between inviscid and viscous flow fields by using the clarky FlowLab template. Set the following conditions: default chord length c = 0.4036 m, flight altitude h = 3,000 m, flight Mach number Ma = 0.3, and angle of attack α = 0 ° . Run simulations for both inviscid flow and viscous flow with the medium grid resolution. Plot surface pressure coefficient values, C p = p /( ρU 2 /2), for both the inviscid and viscous cases and discuss the results. Record the final lift and drag coefficients for both the inviscid and viscous cases and provide answers to the following questions. ( a ) Why is the lift coefficient for the inviscid case larger than for the viscous case? ( b ) Why does the inviscid case have a non-zero value for the drag coefficient even though the viscosity is zero? ( c ) How and why would the lift and drag coefficient values change for both inviscid and viscous flow if the angle of attack were increased to α = 10 ° ? Problem Setup
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This note was uploaded on 03/27/2010 for the course ME 330 taught by Professor All during the Spring '08 term at University of Texas at Austin.

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p9.120_solution - FLOWLAB SOLUTION 9.120 Investigate the...

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