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June 8, 2011, 07:02 |
UDF combining
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Join Date: Jun 2011
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I try to resolve a problem with UDFs.
Want to combine to reaction in one DEFINE_VR_RATE UDF. See below. However, I have a problem to compile it in Fluent. Can anybody check the UDF and say me where the problem could be? Thanks! Michal #include "udf.h" static const real Arrhenius = 1.e15; static const real E_Activation = 1.e6; DEFINE_VR_RATE(myrate,c,t,r,mw,yi,rr,rr_t) { /*If more than one reaction is defined, it is necessary to distinguish between these using the names of the reactions. */ if (!strcmp(r->name, "reaction-1")) { real ci, prod; int i; /* Calculate Arrhenius reaction rate */ prod = 1.; for(i = 0; i < r->n_reactants; i++) { ci = C_R(c,t) * yk[r->reactant[i]] / wk[r->reactant[i]]; prod *= pow(ci, r->exp_reactant[i]); } *rate = r->A * exp( - r->E / (UNIVERSAL_GAS_CONSTANT * C_T(c,t))) * pow(C_T(c,t), r->b) * prod; *rr_t = *rate; /* No "return..;" value. */ } } else if (!strcmp(r->name, "reaction-2")) static const real Arrhenius = 1.e15; static const real E_Activation = 1.e6; { DEFINE_VR_RATE(myrate,c,t,r,mw,yi,rr,rr_t) { /*If more than one reaction is defined, it is necessary to distinguish between these using the names of the reactions. */ if (!strcmp(r->name, "reaction-1")) { real ci, prod; int i; /* Calculate Arrhenius reaction rate */ prod = 1.; for(i = 0; i < r->n_reactants; i++) { ci = C_R(c,t) * yk[r->reactant[i]] / wk[r->reactant[i]]; prod *= pow(ci, r->exp_reactant[i]); } *rate = r->A * exp( - r->E / (UNIVERSAL_GAS_CONSTANT * C_T(c,t))) * pow(C_T(c,t), r->b) * prod; *rr_t = *rate; /* No "return..;" value. */ } else { /* Message("Unknown Reaction\n"); */ } /* Message("Actual Reaction: %s\n",r->name); */ } |
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