- **OpenFOAM Post-Processing**
(*http://www.cfd-online.com/Forums/openfoam-post-processing/*)

- - **flatplate Turbulent BL flow, OF, kOmegaSST model**
(*http://www.cfd-online.com/Forums/openfoam-post-processing/108159-flatplate-turbulent-bl-flow-komegasst-model.html*)

flatplate Turbulent BL flow, OF, kOmegaSST model4 Attachment(s)
Hi all, I have simulated flatplate turbulent BL Flow in openFoam (simpleFOAM) using kOmegaSST model. But i am not getting results very close to the expt data of Weighardt's. Here I have attached uPlus-vs-yPlus curves and Cf distribution. Can anything be said about where I should focus on to improve this result of mine? I also ran another simulation using LaunderSharmaKE model which seemed to give rather better results. However my concern is towards achieving better results with SST model. SCHEMES: gradSchemes --> Gauss linear; divSchemes --> Gauss upwind; laplacianSchemes --> Gauss linear corrected; SOLVERS: p --> GAMG, GaussSeidel smoother k,U,nut,omega --> smoothSolver, GaussSeidel smoother SIMPLE algorithm INITIAL CONDITIONS: — U∞=34 m/s— υ=1.45*10-5—Turbulent intensity, I=1% — k=(3/2)(U∞I)2 =0.1734 m2s-2— ω=k/υT =1195.862 s-1 (assuming, υ/υT =0.1)BOUNDARY CONDITIONS: —Inflow ¡k -- fixedValueuniform 0.1734; ¡ υT-- calculated uniform 0;¡ ω -- fixedValueuniform 1195.86;¡p -- zeroGradient; ¡U – fixedValueuniform (34 0 0); —Outflow ¡k – zeroGradient; ¡ υT-- calculated uniform 0;¡ ω-- zeroGradient;¡p -- zeroGradient; ¡U – zeroGradient; flatplate k – kqRWallFunction uniform 0; υT-- nutWallFunction uniform 0;ω–omegaWallFunction uniform 0;p -- zeroGradient; U – fixedValueuniform (0 0 0); slipwall k ,nuT, ω, p , U -- slipCould anybody please guide me through or give me some suggestions that I could do to improve my results? I have been working on it for over a month already, yet without any success. Thank you in advance!! |

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