skip to content

NASA Logo

Langley Research Center

Turbulence Modeling Resource

 

 

Jump to: SSTm Results,  SSG/LRR-RSM-w2012 Results,  Wilcox2006-klim-m Results,  EASMko2003-S Results,  K-e-Rt Results

Return to: Axisymmetric Separated Boundary Layer Validation Intro Page

Return to: Turbulence Modeling Resource Home Page


 

Axisymmetric Separated Boundary Layer Validation Case

SA Model Results
 

Link to SA equations

SA - surface pressure coefficient SA - surface skin friction coefficient

SA - u velocites, set 1 SA - u velocites, set 2

SA - specific turbulent shear stresses, set 1 SA - specific turbulent shear stresses, set 2

Note that thorough grid studies were not performed for validation cases such as this one. Some effort was made to ensure reasonable grid resolutions, but there may still be small noticeable discretization errors. Therefore, these validation results shown should be considered representative, but not "truth."

The plots compare the SA results from three different independent CFD codes - CFL3D, FUN3D, and TURCOM - to experimental data. CFL3D and FUN3D used freestream value of the SA turbulence field variable (relative to laminar)=3. Please read note 5 on Notes on running CFD page. These results are from the second-finest grid (713x193). All three codes yield nearly identical results. Note that these are compressible code results at "essentially incompressible" conditions of M=0.08812. There may be a very small influence of compressibility. The data files from CFL3D are given here: driver_cfl3d_cp_sa.dat, driver_cfl3d_cf_sa.dat, driver_cfl3d_vel_sa.dat, driver_cfl3d_uv_sa.dat. (Note: the profiles have been interpolated using Tecplot software onto pre-set points, that may or may not correspond to the actual grid points or grid cells used in the computation.) A typical CFL3D input file is: driver_cfl3d_typical_sa.inp. A typical FUN3D input file is: fun3d.nml_typical_sa_2.


 
 

Jump to: SSTm Results,  SSG/LRR-RSM-w2012 Results,  Wilcox2006-klim-m Results,  EASMko2003-S Results,  K-e-Rt Results

Return to: Axisymmetric Separated Boundary Layer Validation Intro Page

Return to: Turbulence Modeling Resource Home Page


 
 

Recent significant updates:
7/11/2014 - added FUN3D results to plots

Privacy Act Statement

Accessibility Statement

Responsible NASA Official: Ethan Vogel
Page Curator: Clark Pederson
Last Updated: 03/06/2025