LES OF TRANSIENTS IN THE FRANCIS-99 WATER TURBINE MODEL

摘要：

Due to the new intermittent electric energy sources,hydropower is forced to run more and more at off-design conditions to regulate the operating conditions.This causes flow instabilities with pressure fluctuations,and load variations that may deteriorate the machine.One effort to learn more about the flow in water turbines during transients is the Francis-99 workshops,organized at NTNU(https://www.ntnu.edu/nvks/francis-99).It is a series of three workshops,where geometrical and experimental data of a Francis turbine model is openly available for validation of CFD results.The first workshop was organized 2014,focusing on three steady operating conditions;the best efficiency point(BEP),a part load point and a high load point.The 14 papers presented at the first workshop 1 showed state-of-the art simulations of the three steady operating conditions using a wide range of CFD codes,including OpenFOAM.The second workshop was organized in 2016 and had a focus on transients between operating conditions.

关键词： LES Transients Rotor-stator interaction Mesh morphing Francis-99 Hydropower

作者: JONATHAN FAHLBECK LUDVIG UPPSTR(O)M ERIC LILLBERG H(A)KAN NILSSON

作者单位: MSc student,Chalmers University of Technology,Mechanics and Martime Sciences Vattenfall AB Research and Development Chalmers University of Technology,Mechanics and Maritime Sciences

会议类型: 国际会议

会议名称: The 13th OpenFOAM Workshop(第13届OpenFOAM国际研讨会)

会议地点: 上海

会议语种:英文

页码: 287-290

在线出版日期: 2018-06-24（万方平台首次上网日期，不代表论文的发表时间）