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Paper Information

Journal:   INTERNATIONAL JOURNAL OF CIVIL ENGINEERING   June 2004 , Volume 2 , Number 2; Page(s) 78 To 91.
 
Paper: 

FINITE VOLUME SOLUTION OF TWO-DIMENSIONAL CONVECTION DOMINATED SUB-CRITICAL FREE SURFACE FLOW USING UNSTRUCTURED TRIANGULAR MESHES

 
 
Author(s):  SABAGH YAZDI S.R., MOHAMMAD ZADEH QOMI M.
 
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Abstract: 
A numerical model is introduced for solution of shallow water flow equations with negligible physical dissipations due to canal roughness and turbulence effects. Two-dimensional velocity distribution and water depth of the flow field are computed by solving the depth average equations of continuity and motion. The equations are converted to discrete form using cell vertex finite volume method on triangular unstructured mesh. The formulation of the added numerical viscosity is chosen in such a way that preserves the accuracy of numerical results. The accuracy of the model is assessed by computing the challenging case of inviscid frictionless flow in a canal with a 1800 bend. The computed results are compared with analytical solution which is obtained from potential flow theory. Simulation of frictionless free surface flow in a constant width meandering sinusoidal canal is considered as an application of the model. The algorithm produced encouraging results.
 
Keyword(s): NUMERICAL SIMULATION, FRICTIONLESS SHALLOW FLOW, ARTIFICIAL VISCOSITY, UNSTRUCTURED MESH
 
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