Two-dimensional model for lateral intake flows

Abstract

This paper gives details of the refinement and application of a two-dimensional horizontal model for rivers. An explicit finite-difference algorithm was used for solving the governing differential equations, which includes the conservation of mass and momentum to predict hydrodynamic parameters. The model includes different turbulence closure models—that is, constant eddy viscosity, Prandtl simple mixing length and Smagorinsky methods. An experimental programme was designed and carried out in a laboratory flume to measure the length of eddy produced at the entrance of the intake. Model predictions have been compared with experimental results for a lateral intake. The effect of different hydrodynamic parameters on the results obtained from several turbulence models has also been investigated. Turbulence model parameters have been calibrated according to experimental measurements. Finally, results have been classified for application of different turbulence models in lateral intakes.