Supersonic simulation for aerodynamic parameters

krihamm · November 30, 2017, 15:10

Hi,

How accurately can you perform supersonic simulations for aerodynamic parameters in CFX? I would like to perform a simulation on a large mesh for velocities reaching several Mach numbers.

I have found various tutorials for supersonic CFD-simulations, but these have mostly only been around Mach 1 and for small objects.

Thanks in advance!

ghorrocks · November 30, 2017, 16:21

How accurate can CFX do supersonic simulations? Theoretically, very accurate. But you need careful validation and verification - but any simulation requires this, so it is nothing unusual.

CFX can handle Mach numbers up until gas disassociation or plasma starts becoming important. For air that is generally about Mach 5.

The size of the object is not important, big or small is OK.

krihamm · November 30, 2017, 16:28

Thank you, that answered my question!

All the best!

November 30, 2017, 15:10	Supersonic simulation for aerodynamic parameters	#1
krihamm New Member Join Date: Nov 2017 Posts: 27 Rep Power: 8	Hi, How accurately can you perform supersonic simulations for aerodynamic parameters in CFX? I would like to perform a simulation on a large mesh for velocities reaching several Mach numbers. I have found various tutorials for supersonic CFD-simulations, but these have mostly only been around Mach 1 and for small objects. Thanks in advance!

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November 30, 2017, 16:21		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	How accurate can CFX do supersonic simulations? Theoretically, very accurate. But you need careful validation and verification - but any simulation requires this, so it is nothing unusual. CFX can handle Mach numbers up until gas disassociation or plasma starts becoming important. For air that is generally about Mach 5. The size of the object is not important, big or small is OK.

November 30, 2017, 16:28		#3
krihamm New Member Join Date: Nov 2017 Posts: 27 Rep Power: 8	Thank you, that answered my question! All the best!