NUMERICAL ANALYSIS OF FLOW AND LOCAL SCOURING AROUND BRIDGE PIER BY SIGMA-BETA COORDINATE SYSTEM

Abstract

When the flow and topography change around the structure are calculated by using Cartesian coordinate system, the conditioning at the corner is very important. In present study, the calculation method, namely coordinate system, is proposed. This method is not necessary to do the conditioning at the corner. Numerical analysis for flow and local scouring around a pier was carried out by the simulator which includes the proposed system. The method of the analysis is three-dimensional LES. The main object is to make certain of the effectiveness of the simulator for the prediction of flow and local scouring around the structure. The agreement between numerical and experimental results is good.