BSL EARSM Turbulence Model

JuPa · February 25, 2014, 12:52

Has anyone used the BSL EARSM turbulence model with success in flows which involve adverse pressure gradients? It seems like a fantastic well rounded turbulence model.

I'm particularly interested in how it compares with the K-Omega SST model, Omega based RSM, and experimental data/or DNS data.

Can anyone provide any insights? I have particular interests in using this model for buoyancy driven flows induced by a temperature difference. Imagine a vessel, with a hot bottom surface, and a cold top surface. Velocity is driven by the density difference.

Are there any papers, key works I should be aware of?

Thank you.

oj.bulmer · February 26, 2014, 07:55

How about this to start with?

http://www.mech.kth.se/thesis/2000/p...fan_wallin.pdf
http://cfd.mace.manchester.ac.uk/twi...-12531jos1.pdf

otm · April 11, 2014, 18:28

Some more references dealing explicitly with EARSM in APG BLs. It is indeed a good model I use it on a daily basis for rapidly rotating flows.

http://dx.doi.org/10.1016/j.ijheatfluidflow.2004.02.012
http://lib.tkk.fi/Diss/2004/isbn9512...9512269341.pdf

JuPa · April 13, 2014, 08:16

Have you done a comparison against SST? I know SST fails to sometimes predict secondary flows.

tsibel · September 17, 2017, 02:20

Hello everyone,

This is the first time that I deal with BSL EARSM model. My solution is not converged, actually it seems to convergence but the solution did not stop. Normallz asa far I understood ıt should take like k-epsion CPU time.

I am using physical time scale and have changed between 0.05-200 but did not work. Solution is fluctuating around my defined rsm (10e-6) value

Can anybody help me? Thanks!

ghorrocks · September 17, 2017, 21:03

FAQ: https://www.cfd-online.com/Wiki/Ansy...gence_criteria

February 25, 2014, 12:52	BSL EARSM Turbulence Model	#1
JuPa Senior Member Mr CFD Join Date: Jun 2012 Location: Britain Posts: 361 Rep Power: 14	Has anyone used the BSL EARSM turbulence model with success in flows which involve adverse pressure gradients? It seems like a fantastic well rounded turbulence model. I'm particularly interested in how it compares with the K-Omega SST model, Omega based RSM, and experimental data/or DNS data. Can anyone provide any insights? I have particular interests in using this model for buoyancy driven flows induced by a temperature difference. Imagine a vessel, with a hot bottom surface, and a cold top surface. Velocity is driven by the density difference. Are there any papers, key works I should be aware of? Thank you.

September 17, 2017, 02:20	BSL EARSM convergene problem	#5
tsibel New Member Sibel Join Date: Apr 2017 Posts: 18 Rep Power: 9	Hello everyone, This is the first time that I deal with BSL EARSM model. My solution is not converged, actually it seems to convergence but the solution did not stop. Normallz asa far I understood ıt should take like k-epsion CPU time. I am using physical time scale and have changed between 0.05-200 but did not work. Solution is fluctuating around my defined rsm (10e-6) value Can anybody help me? Thanks!

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February 26, 2014, 07:55		#2
oj.bulmer Senior Member OJ Join Date: Apr 2012 Location: United Kindom Posts: 473 Rep Power: 20	How about this to start with? http://www.mech.kth.se/thesis/2000/p...fan_wallin.pdf http://cfd.mace.manchester.ac.uk/twi...-12531jos1.pdf

April 11, 2014, 18:28		#3
otm New Member Join Date: Jun 2009 Posts: 22 Rep Power: 16	Some more references dealing explicitly with EARSM in APG BLs. It is indeed a good model I use it on a daily basis for rapidly rotating flows. http://dx.doi.org/10.1016/j.ijheatfluidflow.2004.02.012 http://lib.tkk.fi/Diss/2004/isbn9512...9512269341.pdf

April 13, 2014, 08:16		#4
JuPa Senior Member Mr CFD Join Date: Jun 2012 Location: Britain Posts: 361 Rep Power: 14	Have you done a comparison against SST? I know SST fails to sometimes predict secondary flows.

September 17, 2017, 21:03		#6
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	FAQ: https://www.cfd-online.com/Wiki/Ansy...gence_criteria