Inter-Blade Vortex and Vortex Rope Characteristics of a Pump-Turbine in Turbine Mode under Low Flow Rate Conditions

• Published in: Water (Basel) Vol. 11; no. 12; p. 2554
• Main Authors: Kim, Seung-Jun, Suh, Jun-Won, Choi, Young-Seok, Park, Jungwan, Park, No-Hyun, Kim, Jin-Hyuk
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.12.2019
• Subjects: Aerodynamics; Alternative energy sources; Analysis; Cavitation; Computational fluid dynamics; Computer software industry; Draft tubes; Energy resources; Energy sources; Finite volume method; Flow characteristics; Flow distribution; Flow rates; Flow velocity; Fluid flow; Investigations; Low flow; Multiphase flow; Numerical analysis; Power plants; Power supply; Pumped storage; Renewable resources; Rope; Shear stress; Sustainable yield; Three dimensional flow; Turbines; Turbulence models; Turbulent flow; Two phase flow; Visualization; Vortices; United States; South Korea

Pump-turbines are often used to provide a stable power supply with a constant frequency in response to intermittent renewable energy resources. However, existing pumped-storage power stations often operate under off-design conditions because of the increasing amounts of inconsistent renewable resour...