Numerical Simulation of Three-Dimensional Flow Through or Around Hydraulic Structures

摘要

In the thesis, a computational model for three dimensional stationary fluid flow is developed based on the full 3-D Navier-Stokes equations. The efficiency of the proposed numerical method makes it feasible to perform 3-D flow computations, in which the flow in the direct surroundings of a hydraulic construction is simulated, on mini-computers or even PC's. Three-dimensional simulation of this kind of flows is important because, as is demonstrated by the first example in chapter 9, substantial differences may occur between the 2-D depth averaged solution and the full 3-D solution. Especially in calculations where the flow solution is used to determine the transport of sediment or contaminants, the difference has great impact on the final results.