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Turbulence Modeling Resource


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Purpose

The purpose of this site is to provide a central location where Reynolds-averaged Navier-Stokes (RANS) turbulence models are documented. This effort is guided by the Turbulence Model Benchmarking Working Group (TMBWG), a working group of the Fluid Dynamics Technical Committee of the American Institute of Aeronautics and Astronautics (AIAA).

The objective is to provide a resource for CFD developers to:

This latter capability is made possible through "verification" cases. This site provides simple test cases and grids, along with sample results (including grid convergence studies) from one or more previously-verified codes for some of the turbulence models. Furthermore, by listing various published variants of models, this site establishes naming conventions in order to help avoid confusion when comparing results from different codes.

The site should also help CFD code users to understand and compare the predictions of a variety of models on the fundamental flow problems in the validation database. Note that it is not the intention of this effort to provide validation of turbulence models for a wide range of complex flows for diverse applications. While this would undoubtedly be valuable, it is beyond the scope of what can be supported. Instead, the goal is to provide a set of test cases that illustrate the performance of models for flows that capture fundamental phenomena, in order to establish a consistent basis of comparison as a starting point from which a more thorough validation effort for flows of specific interest to users and developers can be conducted.

Finally, the site should serve as a forum for model developers to help disseminate new models to the CFD community.

It is anticipated that this site will be updated regularly as new models and/or verification/validation cases are incorporated and tested. If you have any questions or comments, please contact: Chris Rumsey of NASA Langley, Brian Smith of Lockheed-Martin, or George Huang of Wright State University.


 

NOTES ON HOW TO USE THIS WEBSITE
 
 

Turbulence Models

(Guidelines for submitting a new turbulence model description: Guideline-turbmodeldescription.pdf)
 

Implementing Turbulence Models into the Compressible RANS Equations

Notes on running the cases with CFD
 
 
 

Turbulence Model Verification Cases and Grids

Models Currently Applied to Verification Cases:

(click on number in parentheses in this table to go to the particular validation page)


MRR
VERIF/2DZP
VERIF/2DCJ
VERIF/2DB
VERIF/2DANW
VERIF/3DB
SA
4
(5)
(3)
(7)
(2)
(3)
SA-RC
3


(2)


SST
3
(5)

(4)
(2)

SST-V
3
(5)
(3)
(3)

(3)
SST-2003
2


(3)


SSG/LRR-RSM-w2012
3
(3)
(3)
(3)

(3)
Wilcox2006-klim
2
(2)
(2)
(2)

(2)
k-kL-MEAH2015
2
(2)
(2)
(2)


(Number of codes included in verification are indicated by the value in parentheses)


 
 

Turbulence Model Validation Cases and Grids


Models Currently Applied to Validation Cases:

(click on number in parentheses in this table to go to the particular validation page)


MRR
2DZP*
2DML*
2DANW*
2DN00*
ASJ*
AHSJ*
ANSJ*
ASBL*
ATB*
2DZPH
2DBFS
2DN44
2DCC
2DWMH
ASWBLI
ACSSJ
AHSSJ
3DSSD
SA
4
(2)
(3)
(2)
(7)
(2)
(2)
(2)
(3)
(2)
(4)
(3)
(2)
(3)
(2)
(2)
(2)
(2)
(3)
SA-RC
3



(3)




(2)



(3)
(2)




SA- QCR2000
1

















(2)
SST
3
(2)
(2)
(2)
(3)



(3)
(2)

(2)
(2)
(3)
(2)



(2)
SST-V
3
(2)
(3)

(3)
(2)
(2)
(2)


(4)
(3)



(2)



SST-RC
2








(2)



(3)





SST-2003
2








(2)









BSL
1
(1)







(1)


(1)






SSG/LRR- RSM-w2012
3
(2)
(2)
(2)
(3)



(2)
(2)



(3)
(2)



(2)
Wilcox2006-klim
2
(2)
(2)
(2)
(2)



(2)
(2)
(2)
(2)
(2)
(2)





k-kL- MEAH2015
2
(2)

(2)
(2)




(2)

(2)


(2)




EASMko 2003-S
1
(1)
(1)
(1)
(1)



(1)

(1)
(1)
(1)
(1)




(1)
k-e-Rt
1
(1)

(1)
(1)



(1)

(1)
(1)
(1)


(1)



k-e-Rt-RC
1












(1)





GLVY- RSM-2012
1
(1)










(1)
(1)




(1)

(* indicates "Basic Case")

(Number of codes included in validation are indicated by the value in parentheses)


 

Alternative Validation Case Listing by Flow Physics:



Free shear flows
Wall flows
P- grad- ients
Curv- ature
Compressibility
Secon- dary flows
Turb Heat Flux
Higher Mach
Vortex flows
Shock
Separ- ation


Jet Anom- aly
Mixing layer
Wakes
Law of wall
Law of wake


Mixing
Van Driest I
Van Driest II






Boundary layers
2DZP*



Y
Y











2DZPH








Y
Y

Y
Y



ASBL*



Y

weak









weak
Mixing layer/ wakes
2DML*

Y














2DANW*


Y













Jets
ASJ*
Y















ANSJ*
Y






Y




Y



AHSJ*
Y










Y




ACSSJ*
Y






Y




Y



AHSSJ*
Y






Y



Y
Y



Airfoils
2DN00*





Y









weak
2DN44





Y









Y
Bump flows
ATB*





Y






Y

Y
Y
2DWMH





Y









Y
Shock/boundary layer interaction flows
ASWBLI





Y





Y
Y

Y
Y
Internal flows
2DCC





Y
Y









2DBFS





strong









Y
3DSSD





Y




Y
Y
Y



(* indicates "Basic Case")
 
 
 

"Classical" Turbulence Model Behavior at Very High Reynolds Number


 
 
 

Turbulent Flow Validation Databases

The data in the following links are publicly available and are provided here as a convenience. They are provided as-is and accuracy is not guaranteed; questions should be directed to the sources of the data provided.


 

Turbulent Manufactured Solutions


 

Cases and Grids for Turbulence Model Numerical Analysis


 

NASA's 40% Challenge
 

Model Readiness Rating System (MRR)
 


Related External Links to Validation Databases and Other Resources

Related External Links to CFD Codes


Recent Significant Site Updates
08/08/2016 - Changed name of Wilcox2006 run cases to Wilcox2006-klim throughout entire site
07/14/2016 - Added SA-RC results for 2-D bump verification case
06/28/2016 - Added SA-RC results for NACA 0012 validation case
06/27/2016 - Added Compressible Periodic Hill DNS data (under "Data from Other Direct Numerical Simulations (DNS)")
04/12/2016 - Added SA-RC results for NASA Wall-Mounted Hump
04/05/2016 - re-named the 2D Planar Shear verification case "2D Coflowing Jet"

Privacy Act Statement

Responsible NASA Official: Christopher Rumsey
Page Curator: Christopher Rumsey
Last Updated: 10/03/2016