scholarly journals Mesh convergence study for hydraulic turbine draft-tube

2016 ◽  
Vol 49 ◽  
pp. 082021
Author(s):  
C Devals ◽  
T C Vu ◽  
Y Zhang ◽  
J Dompierre ◽  
F Guibault
Keyword(s):  
Draft Tube ◽  
Hydraulic Turbine ◽  
Convergence Study ◽  
Mesh Convergence ◽  
Hydraulic Turbine Draft Tube

scholarly journals CFD Analysis of The Hydraulic Turbine Draft Tube to Improve System Efficiency

2016 ◽  
Vol 40 ◽  
pp. 02003 ◽  
Author(s):  
Spandan Chakrabarty ◽  
Bikash Kr. Sarkar ◽  
Subhendu Maity
Keyword(s):  
Draft Tube ◽  
Hydraulic Turbine ◽  
Cfd Analysis ◽  
System Efficiency ◽  
Hydraulic Turbine Draft Tube

Calculation of Turbulent Flows in a Hydraulic Turbine Draft Tube

1990 ◽  
Vol 112 (3) ◽  
pp. 257-263 ◽  
Author(s):  
M. Agouzoul ◽  
M. Reggio ◽  
R. Camarero
Keyword(s):  
Turbulent Flows ◽  
Stokes Equations ◽  
Draft Tube ◽  
Three Dimensional ◽  
Hydraulic Turbine ◽  
Navier Stokes ◽  
Pressure Gradients ◽  
Navier Stokes Equations ◽  
Conservative Form ◽  
Hydraulic Turbine Draft Tube

A numerical method to simulate three-dimensional incompressible turbulent flows has been developed and applied to the calculation of various flow situations in a draft tube. The conservative form of the primitive-variable formulation of the Reynolds averaged Navier-Stokes equations, written for a general curvilinear co-ordinate system, is employed. An overlapping grid combined with opposed differencing for mass and pressure gradients is used. All the properties are stored at the center of the same computational cell which is used for mass and transport balances. The k–ε model is used to describe the turbulent flow. The boundary conditions for the turbulent properties are treated with a particular attention.

A Study of Transient Flow Modes in a Hydraulic Turbine Draft Tube Model

2016 ◽  
Vol 50 (1) ◽  
pp. 1-5 ◽  
Author(s):  
I. V. Litvinov ◽  
A. S. Mitryakov ◽  
S. I. Shtork
Keyword(s):  
Transient Flow ◽  
Draft Tube ◽  
Hydraulic Turbine ◽  
Tube Model ◽  
Hydraulic Turbine Draft Tube
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