Similarity Law for Model Experiment of Pressurized Water-delivery System with Standard Model Turbine

Physical model experiment is a key method to analyze and solve the complex problems of hydraulic and hydropower projects, and a reasonable and accurate similarity law is the basis of the model experiment. Aiming at the model experiment of pressurized water-delivery system with IEC standard model turbine, which is a new and special kind of model experiment, this paper studies the newly induced problems regarding the similarity law, establishes the methodology of similarity law and model scale for the model experiment with single value condition, and explains the difference between the new and traditional similarity laws. Taking a 1:4 scale experimental platform of variable-speed pumped storage plant as an example, numerical simulation is carried out by using TOPSYS, a software for transient processes calculation and analysis of hydropower plants; the validity of the similarity law and the model scale is verified.