サロゲートモデルを用いた水車吸出し管の設計最適化

抄録

The draft tube of a hydro turbine has a role of discharging water to lower lake, and the turbine performance significantly changes according to its profile. Normally, the profile of a draft tube is optimized by CFD under constraint conditions at each power plant location. In this study, we attempted to replace the time consuming CFD process with response surface. The response surface method was RBF(Radial basis function). In order to verify the accuracy of the surrogate model, CFD was carried out for the optimized shape by the model. As a result, it was confirmed that both results of the model and CFD were in good agreement.