Where can I get a free software with e^N method for transition prediction?

peter.zhao · December 25, 2009, 12:06

I am interested in transition prediction for hypersonic flow, but I have not a free software with e^N method. Where can I get a free software with e^N method? Thank you in advance!

DoHander · December 25, 2009, 13:34

For incompressible flows check Xfoil - it is free and open source.

I don't think you will find any free hypersonic e^N implementation. Usually e^N is coupled with a boundary layer code. Do you have a hypersonic BL code ?

You really need to detect the transition position or you want a better estimation for Cd ? If you don't need an estimation for the transition you can probably use LES with any commercial CFD code (last version of Fluent has a transition model implemented) or only for LES check OpenFoam.

Do

peter.zhao · December 26, 2009, 10:44

I have not a hypersonic BL code, but I have a NS software without transition model. I know the e^N method is a practical method so far, but I have not the algorithm in detail. So can you give me some papers about e^N method in detail. Thank you.

DoHander · December 28, 2009, 12:07

If I remember correctly Cebeci presents the e^N in details in his boundary layer books. However I'm not sure the presentation is suitable for use with a NS solver.

You can search AIAA for transition papers.

Do

peter.zhao · January 4, 2010, 10:28

Thank Dohander. I will search web and AIAA papers through Google.

December 25, 2009, 12:06	Where can I get a free software with e^N method for transition prediction?	#1
peter.zhao New Member peter. zhao Join Date: Dec 2009 Location: China Posts: 4 Rep Power: 16	I am interested in transition prediction for hypersonic flow, but I have not a free software with e^N method. Where can I get a free software with e^N method? Thank you in advance!

December 26, 2009, 10:44	Can you give me the algorithm about e^N?	#3
peter.zhao New Member peter. zhao Join Date: Dec 2009 Location: China Posts: 4 Rep Power: 16	I have not a hypersonic BL code, but I have a NS software without transition model. I know the e^N method is a practical method so far, but I have not the algorithm in detail. So can you give me some papers about e^N method in detail. Thank you.

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December 25, 2009, 13:34		#2
DoHander Senior Member Join Date: Nov 2009 Posts: 411 Rep Power: 20	For incompressible flows check Xfoil - it is free and open source. I don't think you will find any free hypersonic e^N implementation. Usually e^N is coupled with a boundary layer code. Do you have a hypersonic BL code ? You really need to detect the transition position or you want a better estimation for Cd ? If you don't need an estimation for the transition you can probably use LES with any commercial CFD code (last version of Fluent has a transition model implemented) or only for LES check OpenFoam. Do

December 28, 2009, 12:07		#4
DoHander Senior Member Join Date: Nov 2009 Posts: 411 Rep Power: 20	If I remember correctly Cebeci presents the e^N in details in his boundary layer books. However I'm not sure the presentation is suitable for use with a NS solver. You can search AIAA for transition papers. Do

January 4, 2010, 10:28		#5
peter.zhao New Member peter. zhao Join Date: Dec 2009 Location: China Posts: 4 Rep Power: 16	Thank Dohander. I will search web and AIAA papers through Google.