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Axisymmetric Near-Sonic Jet Validation Case
SST-Vm Model Results
Link to SST-Vm equations
Previously on this page the results were reported as SST-V solutions, but more properly they should be referred
to as SST-Vm. Little difference is expected.
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 shown compare the SST-Vm results from two independent
CFD codes: CFL3D and WIND, along with experimental data.
CFL3D used freestream turbulence intensity=0.775% and freestream turbulent viscosity (relative to laminar)=0.009
(additional details can be found in the CFL3D User's Manual, Appendix H).
WIND used freestream turbulence intensity=0.104% and freestream turbulent viscosity (relative to laminar)=0.001.
Please read note 5 on Notes on running CFD page.
These results are from the second-finest grid (97x97; 61x97; 257x225).
Both codes gave nearly identical results to each other.
Notes:
(1) For axisymmetric cases such as this (with singular axis of symmetry), it is important to
solve the turbulence dissipation terms in a strong conservation form;
(2) These are compressible code results run on a near-sonic case. There may be influence of compressibility.
Although they could be beneficial for this case, no specific turbulence model compressibility corrections have been employed.
The data file from WIND is given here:
jetnearsonic_wind_sstv.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 WIND input file is:
jetnearsonic_wind_typical_sstv.inp.
Jump to: SA Results Return to: Axisymmetric Near-Sonic Jet Case Intro Page Return to: Turbulence Modeling Resource Home Page
Recent significant updates: Responsible NASA Official:
Ethan Vogel
08/28/2020 - changed SST-V naming to SST-Vm
Page Curator:
Clark Pederson
Last Updated: 08/28/2020