p7.88_solution - FLOWLAB SOLUTION 7.88 Use the cylinder...

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FLOWLAB SOLUTION 7.88 Use the cylinder template in FlowLab to demonstrate the importance of the dimensionless Reynolds number in the analysis of fluid dynamics. Set the cylinder radius to R = 0.05 m and use the viscous flow solver. Run cases for two different free stream velocities, U = 0.01 m/s and 0.05 m/s, while holding the Reynolds number constant at a value of Re = 10. Plot the surface pressure coefficient distribution, C p = p /( ρU 2 /2), for both velocities. Explain the results in the context of Reynolds number similarity. Problem Setup After setting up the geometry according to the problem statement, the physics were set as shown below. At the Reynolds number for this problem, it is safe to set the flow to steady and laminar for the flow solver. The medium grid resolution was used for the simulations. A snapshot is shown below:
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Answer An initial test was conducted to evaluate the sensitivity of the solution to the convergence limit (not required of students). The results are shown below for a decrease in the
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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.

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p7.88_solution - FLOWLAB SOLUTION 7.88 Use the cylinder...

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