Abstract
The free discharge through the turbine is applied in the course of construction of hydro power plant or in case of excessive water inflow during floods or emergency situation. The experimental and numerical investigation of flow-induced pressure pulsation in hydraulic turbine draft tube at free discharge was performed.
Highlights
Low-frequency flow-induced pulsation occurs in Francis and Kaplan hydraulic turbines at off-design operation
The free discharge through the turbine is applied in the course of construction of hydro power plant or in case of excessive water inflow during floods or emergency situation
A free discharge through the hydraulic turbine unit is used in the construction of a power plant or in case of water discharge and is a complex technological process
Summary
The experimental and numerical investigation of flow-induced pressure pulsation in hydraulic turbine draft tube at free discharge was performed. 1. Introduction Low-frequency flow-induced pulsation occurs in Francis and Kaplan hydraulic turbines at off-design operation. The pulsation is associated with the unsteady swirling flow in the draft tube of the hydraulic turbine.
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