scholarly journals Numerical simulation of cavitating turbulent flow in a high head Francis turbine at part load operation with OpenFOAM

2012 ◽  
Vol 31 ◽  
pp. 156-165 ◽  
Author(s):  
Hongming Zhang ◽  
Lixiang Zhang
Keyword(s):  
Numerical Simulation ◽  
Turbulent Flow ◽  
Francis Turbine ◽  
Part Load ◽  
High Head

The numerical simulation of low frequency pressure pulsations in the high-head Francis turbine

2015 ◽  
Vol 111 ◽  
pp. 197-205 ◽  
Author(s):  
A.V. Minakov ◽  
D.V. Platonov ◽  
A.A. Dekterev ◽  
A.V. Sentyabov ◽  
A.V. Zakharov
Keyword(s):  
Numerical Simulation ◽  
Low Frequency ◽  
Francis Turbine ◽  
Pressure Pulsations ◽  
High Head

Numerical simulation of unsteady turbulent flow through a Francis turbine

2011 ◽  
Vol 16 (2) ◽  
pp. 179-184 ◽  
Author(s):  
Ying Hu ◽  
Heming Cheng ◽  
Ji Hu ◽  
Xirong Li
Keyword(s):  
Numerical Simulation ◽  
Turbulent Flow ◽  
Francis Turbine ◽  
Flow Through

Numerical Simulation of Cavitating Turbulent Flow in a Francis Turbine with Draft Tube Natural Air Admission

2013 ◽  
Vol 291-294 ◽  
pp. 1963-1968
Author(s):  
Hong Ming Zhang ◽  
Li Xiang Zhang
Keyword(s):  
Turbulent Flow ◽  
Draft Tube ◽  
Pressure Fluctuations ◽  
Francis Turbine ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
Governing Equations ◽  
Operation Analysis ◽  
High Head ◽  
Volume Method

The paper presents numerical analysis of cavitating turbulent flow in a high head Francis turbine with draft tube natural air admission at part load operation. Analysis was performed by OpenFOAM code. A mixture assumption and a finite rate mass transfer model were introduced. The finite volume method is used to solve the governing equations of the mixture model and the pressure-velocity coupling is handled via a Pressure Implicit with Splitting of Operators (PISO) procedure. The pressure distribution and the flow of air in the draft tube are analyzed in detail. Simulation results show that the pressure fluctuations on the draft tube wall can reduce with natural air admission.

Numerical Investigation of Cavitating Turbulent Flow in a Francis Turbine Runner Fitted with Splitter Blades

2013 ◽  
Vol 662 ◽  
pp. 637-642
Author(s):  
Hong Ming Zhang ◽  
Li Xiang Zhang
Keyword(s):  
Turbulent Flow ◽  
Numerical Investigation ◽  
Volume Fraction ◽  
Francis Turbine ◽  
Transfer Model ◽  
Governing Equations ◽  
Operation Analysis ◽  
Turbine Runner ◽  
High Head ◽  
Volume Method

The paper presents numerical investigation of cavitating turbulent flow in a high head Francis turbine runner fitted with splitter blades at part load operation. Analysis was performed by OpenFOAM code. A mixture assumption and a finite rate mass transfer model were introduced. The finite volume method is used to solve the governing equations of the mixture model and the pressure-velocity coupling is handled via a Pressure Implicit with Splitting of Operators (PISO) procedure. Simulation results show that the volume fraction of water vapor and the pressure uneven distribution on the main blade and splitter blade. It will lead to cavitation and fatigue damage.

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