Numerical and Experimental Research on Rectification Measures for a Contraction Diversion Pier in a Pumping Station

In order to improve the flow state of a forebay, contraction diversion pier is discovered, geometric parameters which affect improvement state. this paper, standard k-? model in computational fluid dynamics (CFD) numerical simulation method used research forebay with pier. our research, single factor analyze influence different parameters. Then, optimal are given. Results show that can be concentrate water flow. area where reflux formed, guides along wall. particular, when retractable located middle zone, backflow effectively reduced, improved, and inlet condition pump optimized. By comparing cross-sectional streamlines, velocity contour, normal uniformity longitudinal section, weighted mean angle, obtained as follows: distance from sump 0.1 L, angle 20°, length 0.3 L.