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Model and Boundary Conditions for Flow around a Bullet in Ansys Fluent |
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March 3, 2017, 18:33 |
Model and Boundary Conditions for Flow around a Bullet in Ansys Fluent
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#1 |
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Chaithanya Adapa
Join Date: Mar 2017
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Hello Everyone
I am working on a project to study the Flow around Long Range Bullets particularly Remington Fireball. I thought of simulating the flow in Ansys Fluent but I have no idea which boundary conditions and which model will give a realistic estimate of Drag on the bullet in such supersonic conditions Any ideas and References would be Deeply appreciated Thank you |
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March 3, 2017, 18:48 |
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#2 |
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Justin B.
Join Date: Mar 2017
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Perhaps this may give you a good starting point:
https://confluence.cornell.edu/displ...+Specification I imagine your problem will be a somewhat similar setup. |
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March 3, 2017, 18:59 |
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#3 | |
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Chaithanya Adapa
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Quote:
https://www.youtube.com/watch?v=gnhbhpwTx1c so the above analysis comes short i guess |
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March 5, 2017, 22:45 |
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#4 | |
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Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
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Quote:
The skin friction does not contribute much to the drag compared to across the shockwaves, so it really doesn't matter if you use a turbulence model. There's two ways you can setup the problem. With the bullet stationary and some sort of supersonic inlet, or you can explicitly specify a velocity for the bullet and use a simple pressure inlet (with pressure equal to atmospheric pressure). I recommend the later. |
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Tags |
ansys, bullet, cfd, fluent, supersonic |
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