Numerical simulation of the draft tube and tailwater flow interaction

Weixing Yuan; Rudolf Schilling

doi:10.1080/00221680209499875

Numerical simulation of the draft tube and tailwater flow interaction

Translated title of the contribution: Numerical simulation of the draft tube and tailwater flow interaction

Weixing Yuan, Rudolf Schilling

Engineering and Design

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

This work focuses on the numerical simulation of the interaction between the draft tube and tailwater flow in low head hydro power plants. An approach to the solution of incompressible free surface flow problems is developed. The flow field and the free surface location are calculated by coupling the free surface kinematic and dynamic conditions with the equations of motion for the bulk flow. A pressure correction method is applied to the flow calculation in a moving grid system. The RNG k-ε model is used for turbulence modelling. In order to reduce the computational time, the PVM (Parallel Virtual Machine) subroutines are implemented.

Translated title of the contribution	Numerical simulation of the draft tube and tailwater flow interaction
Original language	English
Pages (from-to)	73-81
Number of pages	9
Journal	Journal of Hydraulic Research
Volume	40
Issue number	1
DOIs	https://doi.org/10.1080/00221680209499875
State	Published - 2002

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10.1080/00221680209499875

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abstract = "This work focuses on the numerical simulation of the interaction between the draft tube and tailwater flow in low head hydro power plants. An approach to the solution of incompressible free surface flow problems is developed. The flow field and the free surface location are calculated by coupling the free surface kinematic and dynamic conditions with the equations of motion for the bulk flow. A pressure correction method is applied to the flow calculation in a moving grid system. The RNG k-ε model is used for turbulence modelling. In order to reduce the computational time, the PVM (Parallel Virtual Machine) subroutines are implemented.",

author = "Weixing Yuan and Rudolf Schilling",

note = "Funding Information: The scholarship from German Academic Exchange Service (Deutscher Akademischer Austauschdienst) awarded to the first author during this study at the University of Technology Munich is gratefully acknowledged. The valuable suggestions and modifications of Prof. Can F. Delale from the Istanbul University and",

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AB - This work focuses on the numerical simulation of the interaction between the draft tube and tailwater flow in low head hydro power plants. An approach to the solution of incompressible free surface flow problems is developed. The flow field and the free surface location are calculated by coupling the free surface kinematic and dynamic conditions with the equations of motion for the bulk flow. A pressure correction method is applied to the flow calculation in a moving grid system. The RNG k-ε model is used for turbulence modelling. In order to reduce the computational time, the PVM (Parallel Virtual Machine) subroutines are implemented.

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Numerical simulation of the draft tube and tailwater flow interaction

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