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#include "../fluids.h" |
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#include "../fprops.h" |
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#include "../solve_ph.h" |
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#include "../refstate.h" |
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#include "../sat.h" |
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#include "../visc.h" |
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#include "../ttse.h" |
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#include <assert.h> |
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#include <math.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <time.h> |
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#include "../color.h" |
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#define MSG(FMT, ...) \ |
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color_on(stderr,ASC_FG_BRIGHTRED);\ |
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fprintf(stderr,"%s:%d: ",__FILE__,__LINE__);\ |
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color_on(stderr,ASC_FG_BRIGHTBLUE);\ |
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fprintf(stderr,"%s: ",__func__);\ |
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color_off(stderr);\ |
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fprintf(stderr,FMT "\n",##__VA_ARGS__) |
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#define ERRMSG(STR,...) \ |
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color_on(stderr,ASC_FG_BRIGHTRED);\ |
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fprintf(stderr,"ERROR:");\ |
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color_off(stderr);\ |
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fprintf(stderr," %s:%d:" STR "\n", __func__, __LINE__ ,##__VA_ARGS__) |
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#define TOL_T 1e-8 |
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#define TOL_RHO 1e-3 |
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int main(void){ |
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PureFluid *P; |
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FpropsError err; |
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const char *helmfluids[] = { "water"}; |
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const int n = sizeof(helmfluids)/sizeof(char *); |
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int i; |
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printf("%d %s\n",n,helmfluids[0]); |
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P = (PureFluid *)fprops_fluid(helmfluids[0],"helmholtz",NULL); |
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MSG("Comparing Helmholtz vs TTSE"); |
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double rho = 1350; |
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#define NPOINTS 500 |
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double temp_s = 280; |
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double temp_f = 350; |
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int nT = NPOINTS; |
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double dT = (temp_f-temp_s)/nT; |
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double pressH[NPOINTS],entH[NPOINTS],enthalpyH[NPOINTS]; |
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double pressT[NPOINTS],entT[NPOINTS],enthalpyT[NPOINTS]; |
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clock_t start = clock(); |
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for(i=0; i<nT; ++i){ |
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err = FPROPS_NO_ERROR; |
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double T = temp_s + i*dT; |
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pressH[i] = P->p_fn(T, rho, P->data,&err) ; |
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entH[i] = P->s_fn(T, rho, P->data,&err) ; |
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enthalpyH[i] = P->h_fn(T, rho, P->data,&err) ; |
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} |
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clock_t end = clock(); |
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double msecH = (double)(end - start) / (CLOCKS_PER_SEC/1000); |
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start = clock(); |
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for(i=0; i<nT; ++i){ |
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err = FPROPS_NO_ERROR; |
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double T = temp_s + i*dT; |
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pressT[i] = evaluate_ttse_p(P,T, rho) ; |
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entT[i] = evaluate_ttse_s(P,T, rho) ; |
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enthalpyT[i] = evaluate_ttse_h(P,T, rho) ; |
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} |
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end = clock(); |
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double msecT = (double)(end - start) / (CLOCKS_PER_SEC/1000); |
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MSG("Percentage Errors"); |
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MSG("Temp Pressure Entropy Enthalpy"); |
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for(i=0; i<nT; ++i){ |
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double T = temp_s + i*dT; |
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double pererrp = 100*((pressT[i]-pressH[i])/pressH[i]); |
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double pererrs = 100*((entT[i]-entH[i])/entH[i]); |
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double pererrh = 100*((enthalpyT[i]-enthalpyH[i])/enthalpyH[i]); |
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MSG("%f %f %f %f",T, pererrp,pererrs,pererrh ); |
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} |
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MSG("Helmholtz did %d calculations in %e seconds", nT*3,msecH/1000); |
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MSG("TTSE did %d calculations in %e seconds", nT*3,msecT/1000); |
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return 1; |
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} |
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