As the computational domain includes exhaust hood and last two stages,it is difficult to obtain precise results using the single-block grid,so the multi-block mesh is adopted to get the detailed three-dimensional flow in exhaust hood.

Based on the configuration of water turbine draft tube and its flow field distribution features, this paper discusses some manipulation methods in the multi-block grid generation within the draft tube structure .

In this paper, based on the feature of geometry and fluid field, multi-block grid technique was used to generate the complicated fluid channel mesh in the centrifugal pump impeller, and the standard k-ε turbulence model and wall function were adopted to solve 3D turbulent flow field in the imp.

A　chemera　gridembedding　technique　is　used　to　calculate　the　flowfield　of　wingbodystore　configuration　in　this　paper.

Research on transient interaction characteristics of multi-lateral jet based on multi-block butt-joint grids;

Study on the prediction of propeller open-water performance using RANS formula and multi-block hybrid meshes;