LM_VandV (T3A)

LM model Validation Result

Author: sun5k

_vandv/LM_transition.md

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+---
+title: Langtry and Menter transition model
+permalink: /vandv/LM_transition/
+---
+
+| Solver | Version | Author |
+| --- | --- | --- |
+| `RANS` | 7.4.0 | S. Kang |
+
+The details of the Langtry and Menter(LM) transition model validation cases are taken from the [AIAA Transition modeling workshop-I](https://transitionmodeling.larc.nasa.gov).
+To validate the LM model, the simulation results of SU2 are compared with the results of Fluent19.0 with a similar numerical setting.
+
+## Problem Setup
+
+
+Flow conditions are the reference from : https://doi.org/10.2514/6.2022-3679 and [AIAA Transition modeling workshop-I](https://transitionmodeling.larc.nasa.gov).
+
+| Case | T3A | T3B | T3Am | NLF0416|
+| --- | --- | --- | --- | --- | 
+|Inlet Velocity (m/s)| 69.44 | 69.44 | 19.8 | 34.72 |
+| --- | --- | --- | --- | --- |
+|Density (kg/m^3) | 0.053 | 0.053 | 1.2 | 2.13 |
+| --- | --- | --- | --- | --- |
+|Viscosity (kg/ms) | 1.85E-5 | 1.85E-5 | 1.79E-5 | Sutherland's Law |
+| --- | --- | --- | --- | --- |
+|Freestream Temperature (K) | 300 | 300 | 300 | 300 |
+| --- | --- | --- | --- | --- |
+|Unit Reynolds number (1/m) | 2.0E5 | 2.0E5 | 1.328E6 | 4.0E6 | 
+| --- | --- | --- | --- | --- |
+|Mach Number | 0.2 | 0.2 | 0.058 | 0.1 |
+| --- | --- | --- | --- | --- |
+|AoA | 0.0 | 0.0 | 0.0 | 0.0 |
+| --- | --- | --- | --- | --- |
+|Viscosity Ratio| 11.9 | 99.0 | 9.0 | 1.0 |
+| --- | --- | --- | --- | --- |
+|Freestream Turbulence Intensity (%) | 5.855 | 7.216 | 1.0 | 0.15 |
+
+
+## Mesh Description
+
+The grids of T3A, T3B, and NLF cases are provided by [TMW](https://transitionmodeling.larc.nasa.gov/workshop_i/)(Transition Model Workshop). And, The grid of T3Am was made with reference to https://doi.org/10.2514/6.2022-3679.
+If you would like to run the above cases for yourself, you can use only the fine level grid files available in the [SU2 V&V repository]https://github.com/su2code/VandV/tree/master/rans/flatplate).
+
+
+## Numerical Scheme 
+
+|  | Fluent | SU2 |
+| Flux | Roe-FDS | L2ROE |
+| --- | --- | --- |
+| Gradient | Least Squares Cell Based | WEIGHTED_LEAST_SQUARES |
+| --- | --- | --- |
+| Spatial Discretization Flow | Third-order MUSCL | MUSCL_FLOW |
+| --- | --- | --- |
+| Spatial Discretization Turbulence | Third-order MUSCL | MUSCL_YES |
+| --- | --- | --- |
+
+## Results
+
+Present results of all grid resolutions and then plot the results of the fine-level grid separately. If you want to see other results of the gird level, you can see them at "vandv_files/LMmodel".
+
+### T3A 
+The experiment data from [here]http://web.tecnico.ulisboa.pt/ist12278/Workshop_AVT_313_2D_cases/html_files/Flat_Plate.htm
+C : Coarse
+M : Medium
+F : Fine
+X : Extra fine
+
+<p align="center">
+<img src="/vandv_files/LM_model/T3A/All_Cf.png" alt="All result comparsion of Cf distribution on T3A" />
+<img src="/vandv_files/LM_model/T3A/Fine_Cf.png" alt="Fine level result comparsion of Cf distribution on T3A" />
+
+### T3B
+
+
+### T3Am
+
+
+### NLF0416
+