Steps of developing a calculation result analysis program¶
Abstract¶
Calculation result analysis program is a program that reads calculation result of a soler from a CGNS file, execute analysis or modify calculation result. Analysis result or modified calculation results can be output to another CGNS file.
The steps of developing a calculation result analysis program is basically the same to that of a solver (See Steps of developing a solver). The difference is that it handles multiple CGNS files.
To handle multiple CGNS files at the same time, you should use different functions than those used in Steps of developing a solver (See List of subroutines). The names of functions for handling multiple CGNS files ends with “_mul_f”, and the first argument is the file ID. You should call “cg_iric_initread_f” instead of “cg_iric_init_f” when initializing the CGNS file to be used by iRIClib.
List 12 shows the source code to handle multiple CGNS files.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | ! (abbr.) ! File opening and initialization call cg_open_f(cgnsfile, CG_MODE_MODIFY, fin1, ier) call cg_iric_init_f(fin1, ier) ! (abbr.) ! Reading calculation condition etc. call cg_iric_read_functionalsize_mul_f(fin1, 'func', param_func_size, ier) ! (abbr.) ! File opening and initialization for reading calculation result call cg_open_f(param_inputfile, CG_MODE_READ, fin2, ier) call cg_iric_initread_f(fin2, ier) ! (abbr.) ! Reading calculation result etc. call cg_iric_read_sol_count_mul_f(fin2, solcount, ier) ! (abbr.) ! Calculation result analysis code ! (abbr.) ! Outputting analysis result call cg_iric_write_sol_time_mul_f(fin1, t, ier) ! (abbr.) ! Closing files call cg_close_f(fin1, ier) call cg_close_f(fin2, ier) ! (abbr.) |
List 13 shows the source code the analysis program that reads calculation result from CGNS file, and executes fish habitat analysis.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | program SampleProgram2 implicit none include 'cgnslib_f.h' integer icount character(len=300) cgnsfile integer:: fin1, fin2, ier, istatus character(len=300) param_inputfile integer:: param_result character(len=100) param_resultother integer:: param_func_size double precision, dimension(:), allocatable:: param_func_param double precision, dimension(:), allocatable:: param_func_value character(len=100) resultname integer:: isize, jsize double precision, dimension(:,:), allocatable:: grid_x, grid_y double precision, dimension(:,:), allocatable:: target_result double precision, dimension(:,:), allocatable:: analysis_result double precision:: tmp_target_result double precision:: tmp_analysis_result integer:: i, j, f, solid, solcount, iter double precision:: t ! Code for Intel Fortran icount = nargs() if (icount.eq.2) then call getarg(1, cgnsfile, istatus) else write(*,*) "Input File not specified." stop end if ! Opening CGNS file call cg_open_f(cgnsfile, CG_MODE_MODIFY, fin1, ier) if (ier /=0) STOP "*** Open error of CGNS file ***" ! Initializing internal variables call cg_iric_init_f(fin1, ier) ! Read analysis conditions call cg_iric_read_string_mul_f(fin1, 'inputfile', param_inputfile, ier) call cg_iric_read_integer_mul_f(fin1, 'result', param_result, ier) call cg_iric_read_string_mul_f(fin1, 'resultother', param_resultother, ier) call cg_iric_read_functionalsize_mul_f(fin1, 'func', param_func_size, ier) allocate(param_func_param(param_func_size), param_func_value(param_func_size)) call cg_iric_read_functional_mul_f(fin1, 'func', param_func_param, param_func_value, ier) if (param_result .eq. 0) resultname = 'Depth(m)' if (param_result .eq. 1) resultname = 'Elevation(m)' if (param_result .eq. 2) resultname = param_resultother ! Read grid from the specified CGNS file call cg_open_f(param_inputfile, CG_MODE_READ, fin2, ier) if (ier /=0) STOP "*** Open error of CGNS file 2 ***" call cg_iric_initread_f(fin2, ier) ! Reads grid call cg_iric_gotogridcoord2d_mul_f(fin2, isize, jsize, ier) allocate(grid_x(isize, jsize), grid_y(isize, jsize)) call cg_iric_getgridcoord2d_mul_f(fin2, grid_x, grid_y, ier) ! Output the grid to CGNS file call cg_iric_writegridcoord2d_mul_f(fin1, isize, jsize, & grid_x, grid_y, ier) ! Allocate memory used for analysis allocate(target_result(isize, jsize), analysis_result(isize, jsize)) ! Start analysis of calculation results call cg_iric_read_sol_count_mul_f(fin2, solcount, ier) do solid = 1, solcount ! Read calculation result call cg_iric_read_sol_time_mul_f(fin2, solid, t, ier) call cg_iric_read_sol_real_mul_f(fin2, solid, resultname, & target_result, ier) ! Do fish habitat analysis do i = 1, isize do j = 1, jsize tmp_target_result = target_result(i, j) do f = 1, param_func_size if ( & param_func_param(f) .le. tmp_target_result .and. & param_func_param(f + 1) .gt. tmp_target_result) then tmp_analysis_result = & param_func_value(f) + & (param_func_value(f + 1) - param_func_value(f)) / & (param_func_param(f + 1) - param_func_param(f)) * & (tmp_target_result - param_func_param(f)) endif end do analysis_result(i, j) = tmp_analysis_result end do end do ! Output analysis result call cg_iric_write_sol_time_mul_f(fin1, t, ier) call cg_iric_write_sol_real_mul_f(fin1, 'fish_existence', analysis_result, ier) end do ! Close CGNS files call cg_close_f(fin1, ier) call cg_close_f(fin2, ier) stop end program SampleProgram2 |