关键词: 混流式水轮机;蜗壳;数据交互;水力设计;BIM;CFD;

Abstract: In order to explore the application of BIM technology in hydraulic machinery design, and efficiently simulate the hydraulic performance of products, this study combines BIM technology with numerical simulation and applies it to the design phase of hydraulic machinery.In this paper, the process of joint use of BIM and CFD and their data interaction are analyzed.At the same time, the HLFN-LJ-930 Francis turbine is taken as an example to carry out its volute hydraulic design and construct its BIM model.By using RNG k-ε model, Fluent software is applied to calculate the flow field of turbine whole flow passage.The results indicate that the flow field pressure differences of volute BIM model under different operating conditions are small, the velocity distribution is uniform and reasonable, and the hydraulic performance is good.It shows that BIM model can provide a calculation model base for the numerical simulation, and the numerical simulation can effectively simulate the hydraulic characteristics of the turbine, which verifies the feasibility of joint use of BIM and CFD in the design stage of hydraulic machinery.

Key words: Francis turbine; volute; data interaction; hydraulic design; BIM; CFD;