Modern challenges for flow investigations in model hydraulic turbines on classical test rig

[摘要] The BulbT project involved several investigations of flow phenomena in different parts of a model bulb turbine installed on the test rig of Laval University Laboratory. The aim is to create a comprehensive data base in order to increase the knowledge of the flow phenomena in this type of turbines and to validate or improve numerical flow simulation strategies. This validation being based on a kinematic comparison between experimental and numerical data, the project had to overcome challenges to facilitate the use of the experimental data for that purpose. Many parameters were checked, such as the test bench repeatability, the intrusiveness of a priori non-intrusive methods, the geometry of the runner and draft tube. This paper illustrates how some of those problematic were solved.

[发布机构] Hydraulic Machine Laboratory (LAMH), Laval University, Department of Mechanical Engineering, Quebec; QC; G1V 0A6, Canada^1

[关键词] Classical tests;Flow investigations;Flow Phenomena;Non-intrusive method;Numerical data;Numerical flow simulations;Test benches;University laboratories