93 lines
3.5 KiB
C
93 lines
3.5 KiB
C
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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// PPPPP H H EEEEE N N GGGGG L EEEEE III +
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// P P H H E NN N G L E I +
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// PPPPP HHHHH EEEEE N N N G GG L EEEEE I +
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// P H H E N N N G G L E I +
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// P H H EEEEE N N GGGGG LLLLL EEEEE III +
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//------------------------------------------------------------------------+
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// Platform for Hybrid Engineering Simulation of Flows +
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// China Aerodynamics Research and Development Center +
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// (C) Copyright, Since 2010 +
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//+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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//! @file Mesh_DeformationRBF.h
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//! @brief Grid deformation by RBF method.
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//! @author Bell, Baka.
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//! REFERENCES
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//! [1] Zhao Z, et al. Numerical simulation of unsteady flows on bird-like flapping
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//! wing[J]. Transactions of Nanjing University of Aeronautics & Astronautics,
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//! 2013, 30(sup):93-100.
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//! [2] Zhao Z et al. An efficient large-scale mesh deformation method based on
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//! MPI/OpenMP hybrid parallel radial basis function interpolation[J].
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//! Chin J Aeronaut, 2020, 33(5): 1392-1404.
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#pragma once
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#include "Mesh_Deformation.h"
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namespace PHSPACE
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{
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typedef PHVector1D< Point3D > PointArray;
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typedef DataStruct_AdtTree<int, RDouble> CPTree;
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typedef DataStruct_AdtNode<int, RDouble> CPNode;
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//! @brief Mesh_DeformationRBF class achieve unstructured grid deform by RBF method.
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class Mesh_DeformationRBF : public Mesh_Deformation
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{
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private:
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//! Number of control point.
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int nControlPoints;
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//! The coordinate of each control point.
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PointArray controlPointCoordinates;
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//! The most displacement of each control point.
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PointArray controlPointVectors;
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//! The zone index and node index each control point belong
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PHVectorInt2D controlPointToGlobalPointIndex;
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//! The RBF influence radius parameter: multiply it to the maximum boundary deformation distance
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//! is the influence radius used in RBF method (influenceRadius in following).
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//! the points that out of the radius will not been deformed.
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//! 10.0-50.0 is recommended.
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RDouble influencePara;
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//! The ADTree of control point
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CPTree *controlPointTree;
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//! Number of reference Control Points.
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int numberOfReferenceCP;
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RDouble wallTolerance;
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PHVectorInt1D secondSegment;
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PHVectorInt1D rotateNodeIndex;
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public:
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//! @param[in] nZonesIn Number of grid.
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//! @param[in] stationalGridIn Original grid.
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Mesh_DeformationRBF(int nZonesIn, Grid **stationalGridIn);
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~Mesh_DeformationRBF();
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void SetNumberOfReferenceCP(int numberOfReferenceCPIn);
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void SetInfluencePara(RDouble influenceParaIn);
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private:
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void TransformGrid();
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void MatchControlPoints();
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void PostTreat();
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void Deforming();
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void SurfaceGridMove(int iStep);
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void BuildControlPointTree();
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void FindOutReferenceCP(DYNode point, PHVectorInt1D &referenceCP);
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void RBFDeformingKernel(DynamicGrid *grid, int nodeIndex, PHVectorInt1D &referenceCP);
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};
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RDouble Wendland (RDouble distance, RDouble radius);
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RDouble WendlandC0(RDouble distance, RDouble radius);
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RDouble WendlandC2(RDouble distance, RDouble radius);
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RDouble WendlandC4(RDouble distance, RDouble radius);
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//void MatrixInverse(vector< vector< RDouble > > &maxtrix, const int size);
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}
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