ex_B3.cc

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#include <iostream>
#include <cmath>
#include "../../src/c++/rad_rcslw.h"
#include "../../src/c++/rad.h"
 
 
using namespace std;
 
void parallel_planes(rad               *RAD,
                     const double         L,
                     const int            ntheta,
                     const vector<double> &T,
                     const double         P,
                     const vector<double> &fvsoot,
                     const vector<double> &xH2O,
                     const vector<double> &xCO2,
                     const vector<double> &xCO,
                     const vector<double> &xCH4,
                     vector<double>       &q,
                     vector<double>       &Q,
                     vector<double>       &x,
                     vector<double>       &xQ,
                     const bool           LzeroIbc=false
                     );
 
 
int main() {
 
    //--------------------- parameters
 
    double P      = 101325.0;
    double L      = 1.0;
    int    nGG    = 24;
    int    ntheta = 101;
    int    nx     = 1001;
    double Twall  = 400;
 
    int    nGGa   = nGG+1;
 
    double xco2=0.0, xco=0.0, xh2o=0.0, xch4=0.0, fvs=0.0;
 
    //---------------------
 
    vector<double> xCO2(nx, xco2);
    vector<double> xCO(nx, xco);
    vector<double> xH2O(nx, xh2o);
    vector<double> xCH4(nx, 0.0);
    vector<double> fvsoot(nx, fvs);
 
    vector<double> x(nx, 0.0);
    vector<double> xQ;
    vector<double> T(nx, Twall);
 
    double dx = L/(nx-1);
    x[0] = 0.0;
    double Tavg = T[0];
    double xH2O_avg = 0.0;
    double xCO2_avg = 0.0;
    for(int i=1; i<nx; ++i){
        x[i] = x[i-1] + dx;
        T[i] = 400 + 1400*pow(sin(M_PI*x[i]/L),2);
        xH2O[i] = 1E-4 + (1.0-1E-4)*pow(sin(M_PI*x[i]/L),2);
        xCO2[i] = 1.0-xH2O[i];
        Tavg += T[i];
        xH2O_avg += xH2O[i];
        xCO2_avg += xCO2[i];
    }
    Tavg /= nx;
    xH2O_avg /= nx;
    xCO2_avg /= nx;
 
    rad *rcslw = new rad_rcslw(nGG, Tavg, P, fvs, xH2O_avg, xCO2_avg, xco);    // results are better if Tref in rcslw constructor is set to 1000 K.
 
    //--------------------- get q, Q
 
    vector<double> q;    
    vector<double> Q;
 
    parallel_planes(rcslw, L, ntheta, T, P, fvsoot, xH2O, xCO2, xCO, xCH4, q, Q, x, xQ);
 
    //-------------------------------------------------------------------------
 
    //cout << "# x (m), Q (kW/m3)";
    //for(int i=0; i<xQ.size(); ++i)
    //    cout << endl << xQ[i] << "  " << Q[i]/1000;
 
    cout << "# x (m), q (kW/m2)";
    for(int i=0; i<x.size(); ++i)
        cout << endl << x[i] << "  " << q[i]/1000;
 
    cout << endl;
    
    return 0;
 
}