Missile Aerodynamics

Skabirian · June 20, 2018, 00:35

Hello everybody
is it correct to model half a missile with a bow shock in supersonic flow?
or I have to model full body?
Regards

siw · June 20, 2018, 04:44

That would be reasonable unless there is non-symmetrical flowfield features e.g. body vortex shedding / trailing flow from fins due to moderate / high angle of attack (maybe with roll angle as well). Also, assuming you are not using a scale-resolving method.

If the geometry and flowfield are symmetrical maybe you can use 1/4 symmetry to save computational effort.

Skabirian · June 30, 2018, 03:53

Thanks siw
Hiw can I find is there any vortex shedding which needs to be fully modeled?

June 20, 2018, 00:35	Missile Aerodynamics	#1
Skabirian New Member Siavash Join Date: Nov 2013 Posts: 20 Rep Power: 12	Hello everybody is it correct to model half a missile with a bow shock in supersonic flow? or I have to model full body? Regards

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June 20, 2018, 04:44		#2
siw Senior Member Stuart Join Date: Jul 2009 Location: Portsmouth, England Posts: 735 Rep Power: 25	That would be reasonable unless there is non-symmetrical flowfield features e.g. body vortex shedding / trailing flow from fins due to moderate / high angle of attack (maybe with roll angle as well). Also, assuming you are not using a scale-resolving method. If the geometry and flowfield are symmetrical maybe you can use 1/4 symmetry to save computational effort.

June 30, 2018, 03:53		#3
Skabirian New Member Siavash Join Date: Nov 2013 Posts: 20 Rep Power: 12	Thanks siw Hiw can I find is there any vortex shedding which needs to be fully modeled?