CFD in Hydraulic Modeling

Abstract

Ski-jump spillways are the most important structures using flow velocities greater than 20 m /s. With the development of computer science and a variety of computational fluid dynamics (CFD) software, the behavior of ski-jump spillways can be studied in a short period of time and without paying high expenses. This paper presents comparisons of experimental and CFD results for pressure on the surface of the ski-jump bucket. Pressure on the curve surface of the bucket is one of the most important design parameters. In these structures, pressure fluctuations can result in considerable lift force under the structure. The obtained results showed that for different flow rates, the maximum pressure is near the center of the bucket's curve. For different flow rates, the theoretical and numerical results showed a good agreement.