How to specify mfr conditions in CFG file

rn86j · July 2, 2024, 04:30

I have a simple 3-D inlet geometry with 2 control faces, inlet and outlet (exhaust) in a spherical farfield. I wish to run this at free-stream Mach 0.8.
Could someone please help in setting this for mfr of 0.6 at the inlet face and (say) Mach 1 at the exhaust face
What lines do I need to specify in the CFG file. Do the areas of the faces come into this ...... May be there is an example in tutorials ?
Many thanks

bigfootedrockmidget · July 3, 2024, 08:42

I do not understand the setup, how can you have an inlet and an outlet together with a spherical farfield? Is there a wormhole in the domain? Do you have a sketch?

rn86j · July 4, 2024, 03:26

Yes, I should have mentioned the word "nacelle"
Just thinking in terms of a simple engine nacelle eg. on a 737 aircraft:
Downstream of the lip, a control face that requires MFR and then another control face closing the nacelle simulating the exhaust conditions.

Thanks

July 2, 2024, 04:30	How to specify mfr conditions in CFG file	#1
rn86j New Member Join Date: Jun 2020 Posts: 23 Rep Power: 6	I have a simple 3-D inlet geometry with 2 control faces, inlet and outlet (exhaust) in a spherical farfield. I wish to run this at free-stream Mach 0.8. Could someone please help in setting this for mfr of 0.6 at the inlet face and (say) Mach 1 at the exhaust face What lines do I need to specify in the CFG file. Do the areas of the faces come into this ...... May be there is an example in tutorials ? Many thanks

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July 3, 2024, 08:42		#2
bigfootedrockmidget Senior Member bigfoot Join Date: Dec 2011 Location: Netherlands Posts: 652 Rep Power: 19	I do not understand the setup, how can you have an inlet and an outlet together with a spherical farfield? Is there a wormhole in the domain? Do you have a sketch?

July 4, 2024, 03:26		#3
rn86j New Member Join Date: Jun 2020 Posts: 23 Rep Power: 6	Yes, I should have mentioned the word "nacelle" Just thinking in terms of a simple engine nacelle eg. on a 737 aircraft: Downstream of the lip, a control face that requires MFR and then another control face closing the nacelle simulating the exhaust conditions. Thanks