tentative d ecrire dans un fichier colonne par colonne

src/main.cpp

 #include <iostream>
+#include <fstream>
+#include <iomanip>
 #include <Kokkos_Core.hpp>
 #include <RevisionInfo.hpp>
 #include <rang.hpp>
 #include <FPEManager.hpp>
 #include <SignalManager.hpp>
 #include <ConsoleManager.hpp>
+#include <string>
 
 // #include <RawKokkosAcousticSolver.hpp>
 // #include <MeshLessAcousticSolver.hpp>
@@ -138,7 +141,7 @@ int main(int argc, char *argv[])
     const Kokkos::View<const double*> Vj = mesh_data.Vj();
     const Kokkos::View<const Rd**> Cjr = mesh_data.Cjr();
 
-    const double tmax=1.5;
+    const double tmax=0.5;
     double t=0;
 
     int itermax=std::numeric_limits<int>::max();
@@ -153,8 +156,16 @@ int main(int argc, char *argv[])
 
     BlockPerfectGas block_eos(rhoj, ej, pj, gammaj, cj);
 
-    //double c = 0.;
-    //c = finite_volumes_diffusion.conservatif(unknowns);
+    double c = 0.;
+    c = finite_volumes_diffusion.conservatif(unknowns);
+
+    // Ecriture des valeurs initiales de rho dans un fichier
+    const Kokkos::View<const Rd*> xj = mesh_data.xj();
+    std::ofstream fout("film_rho", std::ios::trunc);
+    fout.precision(15);
+    for (size_t j=0; j<mesh.numberOfCells(); ++j) {
+      fout << std::fixed << xj[j][0] << ' ' << std::fixed << rhoj[j] << '\n';
+    }
 
     while((t<tmax) and (iteration<itermax)) {
      
@@ -187,7 +198,6 @@ int main(int argc, char *argv[])
 	}
       }
 
-
       // DIFFUSION PURE
       
       /*
@@ -203,8 +213,22 @@ int main(int argc, char *argv[])
     
       ++iteration;
       std::cout << "temps t : " << t << std::endl;
+
+      // Ecriture des valeurs de rho par pas de temps dans le fichier
+      std::ofstream fout("film_rho", std::ios::app);
+      fout.precision(15);
+      fout.clear();
+      fout.seekp(0, std::ios::beg);
+      //int const position = 0;
+      for (size_t j=0; j<mesh.numberOfCells(); ++j) {
+	fout.seekp(35*iteration*j);
+	//position = fout.tellp();
+	//std::cout << "Nous sommes au " << fout.tellp() << "eme caractere du fichier" << std::endl;
+	fout << ' ' << std::fixed << rhoj[j] << '\n';
+	//std::cin.ignore(35*iteration, '\n');
       }
 
+    }
 
     std::cout << "* " << rang::style::underline << "Final time" << rang::style::reset
 	      << ":  " << rang::fgB::green << t << rang::fg::reset << " (" << iteration << " iterations)\n";
@@ -234,16 +258,16 @@ int main(int argc, char *argv[])
     std::cout << "* " << rang::style::underline << "Erreur L2 E" << rang::style::reset
 	      << ":  " << rang::fgB::green << error3 << rang::fg::reset << " \n";
     */
-    /*
+    
     std::cout << "* " << rang::style::underline << "Resultat conservativite rho E temps = 0" << rang::style::reset
 	      << ":  " << rang::fgB::green << c << rang::fg::reset << " \n";
     
     double cons = 0.;
     cons = finite_volumes_diffusion.conservatif(unknowns);
 
-    std::cout << "* " << rang::style::underline << "Resultat conservativite E" << rang::style::reset
+    std::cout << "* " << rang::style::underline << "Resultat conservativite rho E" << rang::style::reset
 	      << ":  " << rang::fgB::green << cons << rang::fg::reset << " \n";
-    */
+    
 
     //method_cost_map["AcousticSolverWithMesh"] = timer.seconds();
     method_cost_map["FiniteVolumesDiffusionWithMesh"] = timer.seconds();