Simulation of Unsteady Water Film Flow on Pelton Bucket
Shen Na · Energy and Power Engineering · 2013
In order to simulate the complicated unsteady flow in Pelton bucket, it is necessary to apply the animated cartoon approach.In this paper, a free jet and the inner surface of a bucket is described by boundary fitted grid (BFG) with non-orthogonal curvilinear coordinates.The water flow is discretized in space and time for CFD (computational fluid dynamics).The moving grids of water film are successfully projected onto the bucket's inner surface by a projection algorithm.The visualization result of the jet landing on bucket's surface and the unsteady flow in the rotating buckets in 3D verifies the effectiveness of the proposed method.