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added subdomain support in Mesh class, CalculateLaplaceMult implementation

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jakob.schratter 2026-01-22 17:52:23 +01:00
commit 2e887c04bc
13 changed files with 4336 additions and 69057 deletions
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24
mgrid_2/getmatrix.h
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@ -340,6 +340,19 @@ class FEM_Matrix: public CRS_Matrix
void Derive_Matrix_Pattern_slow();
/**
* Calculates the entries of f.e. stiffness matrix for the Laplace operator
* for multiple domains with different conductivities
* and load/rhs vector @p f.
* No memory is allocated.
*
* @param[in,out] f (preallocated) rhs/load vector
*/
void CalculateLaplaceMult(std::vector<double> &f);
double Thermal_coefficient(const int subdomain);
/**
* Calculates the entries of f.e. stiffness matrix for the Laplace operator
* and load/rhs vector @p f.
@ -647,6 +660,17 @@ class BisectIntDirichlet: public BisectInterpolation
*/
void CalcElem(int const ial[3], double const xc[], double ske[3][3], double fe[3]);
/**
* Calculates the element stiffness matrix @p ske
* of one triangular element with linear shape functions
* for specific thermal conductivity in subdomain
* @param[in] ial node indices of the three element vertices
* @param[in] xc vector of node coordinates with x(2*k,2*k+1) as coordinates of node k
* @param[in] lambda thermal conductivity of element
* @param[out] ske element stiffness matrix
*/
void CalcElemSpecific(int const ial[3], double const xc[], double const lambda, double ske[3][3]);
/**
* Calculates the element mass matrix @p ske.
* of one triangular element with linear shape functions.