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February 9, 2011, 11:47 |
Wind Tunnel Blockage question
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#1 |
New Member
Eric
Join Date: Feb 2011
Posts: 1
Rep Power: 0 |
Hi all, I am trying to run a CFD test for an Inflatable Aerodynamic Decelerator (essentially a blunt body) in a wind tunnel. For this wind tunnel model, I have approximately 20% tunnel blockage. I will be looking for drag and turbulent flow characteristics around the decelerator. The question I have is, does CFX already incorporate tunnel blockage into its calculations or do I need to set it up to achieve accurate results. Any help towards this problem will be of great use.
Also, I will be running at low subsonic speeds, apprx. 38 m/s, and I will be using the K-Omega turbulence model. At the inlet I have a velocity boundary condition of 38 m/s and at the outlet I have a bound condition of 0 Pascal relative pressure. Along the walls I have used no-slip bound conditions. To simplify the calculations required I have used a symmetry plane to cut the model in half. The wind tunnel is approximately 25 inches wide and 40 inches high. The model has a diameter of 16 inches. Thanks, Eric Last edited by ohma0043; February 9, 2011 at 12:38. Reason: Clearer Explanation of Problem |
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