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Subsonic or transonic flow over a bump in a channel. |
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January 6, 2014, 12:10 |
Subsonic or transonic flow over a bump in a channel.
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Senior Member
Ashwani
Join Date: Sep 2013
Location: Hyderabad
Posts: 154
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For these case, we prescribe stagnation pressure and temperature at subsonic inlet (physical BC). Now we extrapolate velocity from inside the solution domain (numerical BC). For calculating internal energy (e) for solving energy equation for in-viscid flow, we require velocity values. Therefore does stagnation properties means these value of velocity at inlet will be zero ?
Numerically, we would get some velocity by extrapolation. What is the physical meaning of taking stagnation properties at inlet? My code is using MacCormack scheme using Artificial Viscosity apporach in 3D for euler Equation. I am getting for M=0.7 a distorted result. I have attached my result below and the standard result given in Hirsch book. Can any one please tell what I may be doing wrong? |
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