VP法のテスト
境界埋め込み法の1つであるVP法のコードをOpenFOAMに実装しました。実装したコードはこちら。 https://qiita.com/ishigaki/items/cfb20bc58c2ae6a633a0
境界適合格子でやったときとちゃんと比べてみました。NACA0012翼周りの流れをやります。
条件
- 流入速度44m/s
- 迎角4度（境界速度の角度を調整して迎角を設定）
- コード長は1m
- Reynolds数は粘性係数で調整。Re=UinC/nu。Uは流入速度，Cはコード長，nuは動粘性係数。
メッシュ (blockMeshDict)
pisoFoam用のメッシュと，VP法つかったpisoFaomのvppisoFoam用のメッシュを作りました。blockMeshだけでほぼNACA0012通りの形状を再現できます。
メッシュ幅はおおよそ5mmです。
境界適合格子（ここをクリックするとblockMeshDictの詳細が出ます）
polyLineで翼表面の座標を直線で補間します。
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.3.1 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
convertToMeters 1;
vertices
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blocks
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hex (0 2 3 1 10 12 13 11) (250 120 1) simpleGrading (1 1 1)
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hex (3 5 6 1 13 15 16 11) (142 250 1) simpleGrading (1 1 1)
hex (4 7 8 5 14 17 18 15) (398 250 1) simpleGrading (1 1 1)
hex (5 8 9 6 15 18 19 16) (398 250 1) simpleGrading (1 1 1)
);
edges
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boundary
(
inlet
{
type patch;
faces
(
(0 1 11 10)
);
}
outlet
{
type patch;
faces
(
(0 4 14 10)
( 4 7 17 14)
(1 6 16 11)
(6 9 19 16)
(7 8 18 17)
(8 9 19 18)
);
}
airfoil
{
type wall;
faces
(
(2 5 15 12)
(2 3 13 12)
(3 5 15 13)
);
}
front
{
type empty;
faces
(
(0 2 3 1)
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(5 8 9 6)
(10 12 13 11)
(10 14 15 12)
(13 15 16 11)
(14 17 18 15)
(15 18 19 16)
);
}
);
mergePatchPairs
(
);
// ************************************************************************* //
