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336fb3bddf
ENH: add generalised log-law type ground-normal inflow boundary conditions for wind velocity and turbulence quantities for homogeneous, two-dimensional, dry-air, equilibrium and neutral atmospheric boundary layer (ABL) modelling ENH: remove `zGround` entry, which is now automatically computed ENH: add `displacement height` entry, `d` ENH: add generalised atmBoundaryLayerInletOmega boundary condition ENH: add a verification case for atmBoundaryLayerInlet BCs DOC: improve atmBoundaryLayerInlet header documentation BUG: fix value-entry behaviour in atmBoundaryLayerInlet (fixes #1578) Without this change: - for serial-parallel computations, if `value` entry is available in an `atmBoundaryLayerInlet` BC, the theoretical ABL profile expressions are not computed, and the `value` entry content is used as a profile data - for parallel computations, if `value` entry is not available, `decomposePar` could not be executed. With this change: - assuming `value` entry is always be present, the use of `value` entry for the ABL profile specification is determined by a flag `initABL` - the default value of the optional flag `initABL` is `true`, but whenever `initABL=true` is executed, `initABL` is overwritten as `false` for the subsequent runs, so that `value` entry can be safely used. Thanks Per Jørgensen for the bug report. BUG: ensure atmBoundaryInlet conditions are Galilean-invariant (fixes #1692) Related references: The ground-normal profile expressions (tag:RH): Richards, P. J., & Hoxey, R. P. (1993). Appropriate boundary conditions for computational wind engineering models using the k-ε turbulence model. In Computational Wind Engineering 1 (pp. 145-153). DOI:10.1016/B978-0-444-81688-7.50018-8 Modifications to preserve the profiles downstream (tag:HW): Hargreaves, D. M., & Wright, N. G. (2007). On the use of the k–ε model in commercial CFD software to model the neutral atmospheric boundary layer. Journal of wind engineering and industrial aerodynamics, 95(5), 355-369. DOI:10.1016/j.jweia.2006.08.002 Expression generalisations to allow height variation for turbulence quantities (tag:YGCJ): Yang, Y., Gu, M., Chen, S., & Jin, X. (2009). New inflow boundary conditions for modelling the neutral equilibrium atmospheric boundary layer in computational wind engineering. J. of Wind Engineering and Industrial Aerodynamics, 97(2), 88-95. DOI:10.1016/j.jweia.2008.12.001 The generalised ground-normal profile expression for omega (tag:YGJ): Yang, Y., Gu, M., & Jin, X., (2009). New inflow boundary conditions for modelling the neutral equilibrium atmospheric boundary layer in SST k-ω model. In: The Seventh Asia-Pacific Conference on Wind Engineering, November 8-12, Taipei, Taiwan. Reproduced benchmark: Rectangular prism shown in FIG 1 of Hargreaves, D. M., & Wright, N. G. (2007). On the use of the k–ε model in commercial CFD software to model the neutral atmospheric boundary layer. Journal of wind engineering and industrial aerodynamics, 95(5), 355-369. DOI:10.1016/j.jweia.2006.08.002 Benchmark data: HW, 2007 FIG 6 TUT: update simpleFoam/turbineSiting tutorial accordingly
112 lines
2.3 KiB
C++
112 lines
2.3 KiB
C++
/*--------------------------------*- C++ -*----------------------------------*\
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| ========= | |
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| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
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| \\ / O peration | Version: v1912 |
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| \\ / A nd | Website: www.openfoam.com |
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| \\/ M anipulation | |
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\*---------------------------------------------------------------------------*/
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FoamFile
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{
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version 2.0;
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format ascii;
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class dictionary;
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object blockMeshDict;
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}
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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scale 1;
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// x = streamwise
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// y = spanwise
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// z = wall-normal
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nx 500;
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ny 5;
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nz 50;
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xMin 0;
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xMax 5000.0;
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yMin 0;
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yMax 100.0;
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zMin 0.0;
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zMax 500.0;
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// blockMesh calculator input:
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// width of start cell = 1.0 (HW:p. 359)
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// number of cells = 50
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// total length = 500
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// blockMesh calculator output:
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// cell-to-cell expansion ratio = 1.076030437 (consistent with 1.076 (HW:Fig.1))
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zTotalExpansion 36.25795062;
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vertices
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(
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($xMin $yMin $zMin)
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($xMax $yMin $zMin)
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($xMax $yMax $zMin)
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($xMin $yMax $zMin)
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($xMin $yMin $zMax)
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($xMax $yMin $zMax)
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($xMax $yMax $zMax)
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($xMin $yMax $zMax)
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);
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blocks
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(
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hex (0 1 2 3 4 5 6 7) ($nx $ny $nz) simpleGrading (1 1 $zTotalExpansion)
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);
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edges
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(
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);
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boundary
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(
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inlet
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{
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type patch;
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faces
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(
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(0 4 7 3)
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);
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}
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ground
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{
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type wall;
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faces
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(
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(0 3 2 1)
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);
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}
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top
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{
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type patch;
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faces
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(
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(4 5 6 7)
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);
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}
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sides
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{
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type symmetry;
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faces
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(
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(1 5 4 0)
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(3 7 6 2)
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);
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}
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outlet
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{
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type patch;
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faces
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(
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(2 6 5 1)
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);
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}
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);
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mergePatchPairs
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(
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);
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// ************************************************************************* //
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