Communication dans un congrès
          
              
                
                Titre  :  
                
                  Solutions to a Riemann problem at a junction of two reaches                
  
              
              
                 
                Auteurs  :  
                
                Mouhamadou Samsidy Goudiaby, M. L. Diagne, B. M. Dia                
  
              
              
              
                  
                Résumé :  
                
                In this paper, we study a Riemann problem at a junction of two reaches. We consider the 1D Saint-Venant equations in each reach combined with particular conditions at the junction of the two reaches. The flow in the canal system is assumed to be subcritical. We have shown under a certain condition that the Riemann problem has a unique solution. However such a condition is not always satisfied, meaning that there are states where no solution to the Riemann problem can be found.                
  
              
              
                  
                Mots-clés :  
                
                Problème de Riemann, Equations de Saint-Venant, Systèmes hyperboliques, Canal à ciel ouvert.                
  
              
              
                 
                Congrès  :  
                
                Proceedings, Colloque Africain sur la Recherche en Informatique et en Mathématiques Appliquées (CARI)                
  
              
              
                 
                Date  :  
                
                1-4 Octobre 2014                
  
              
              
                 
                Ville  :  
                
                Saint-Louis                
  
              
              
                 
                Pays  :  
                
                Sénégal                
  
              
                            
                 
                Pages  :  
                
                pp. 55-62                
  
              
              
              
                 
                Date de publication  :  
                
                October 2014