fem2p fem3p mesh23 mesh24 mesh29 mesh34 mesh35 mesh36 mesh38

mesh24() void mesh24 ( int  nx, int  ny, int *  n, double  sclx, double  scly, double  x[], double  y[], int *  ne, int  ldknc, int  knc[], int  ldks, int  ks[], int  lb[], int *  nb, int *  info  ) Generates simple rectangular mesh for FEM (2D) (4-node quadrangle element) Purpose This routine generates the simple rectangular mesh for FEM. (2D) (4-node quadrangle element) Parameters [in] nx Number of grids in the X-direction. (nx > 0) [in] ny Number of grids in the Y-direction. (ny > 0) [out] n Total number of nodes. (= (nx + 1)*(ny + 1)) [in] sclx Scale factor of x-coordinates. [in] scly Scale factor of y-coordinates. [out] x[] Array x[lx] (lx >= n) X-coordinates of nodes. [out] y[] Array y[ly] (ly >= n) Y-coordinates of nodes. [out] ne Number of elements. (= nx*ny) [in] ldknc Leading dimension of the two dimensional array knc[]. (ldknc >= 5 (number of nodes in the element + 1 (4-node quadrangle))) [out] knc[] Array knc[ldknc*lknc] (lknc >= ne) Connection matrix: knc[ldknc*k] is the type of element k (= 3: 4-node quadrangle), knc[1 + ldknc*k], ..., knc[4 + ldknc*k] point to the nodes of element k. [in] ldks Leading dimension of the two dimensional array ks[]. (ldks >= 3 (number of nodes in the natural boundary element + 1 (2-node line element))) [out] ks[] Array ks[ldks*lks] (lks >= nb) Connection matrix of natural boundary sides: ks[ldks*k] is the type of boundary element k (= 1: 2-node line element), ks[1 + ldks*k] and ks[2 + ldks*k] point to the nodes of boundary element k. [out] lb[] Array lb[llb] (llb >= nb) Boundary side label. = 1: front. (y = 0) = 2: right. (x = 1) = 3: back. (y = 1) = 4: left. (x = 0) [out] nb Number of boundary sides. (= 2*(nx + ny)) [out] info Return code. = 0: Normal return. = i < 0: The (-i)-th argument is invalid or has an illegal value.