Effect of the numerical viscosity on reproduction of mean and turbulent flow fields in the case of a 1:1:2 single block model

2019 ◽  
Vol 191 ◽  
pp. 279-296 ◽  
Author(s):  
N. Ikegaya ◽  
T. Okaze ◽  
H. Kikumoto ◽  
M. Imano ◽  
H. Ono ◽  
...  
Keyword(s):  
Turbulent Flow ◽  
Flow Fields ◽  
Block Model ◽  
Numerical Viscosity ◽  
Single Block

Development of a Compact & Easy-to-Use 3-D Camera for High Speed Turbulent Flow Fields

2013 ◽  
Author(s):  
Brian S. Thurow
Keyword(s):  
Turbulent Flow ◽  
High Speed ◽  
Flow Fields

scholarly journals Combustion-induced turbulent flow fields in premixed flames

Fuel ◽  
2021 ◽  
Vol 290 ◽  
pp. 119972
Author(s):  
D. Bradley ◽  
M. Lawes ◽  
M.E. Morsy
Keyword(s):  
Turbulent Flow ◽  
Premixed Flames ◽  
Flow Fields

The Turbulent Flow Fields and Vortex Structures Inside Surf Zone

1988 ◽  
pp. 381-388 ◽  
Author(s):  
H. H. Hwung ◽  
C. Lin ◽  
C. C. Kao
Keyword(s):  
Turbulent Flow ◽  
Surf Zone ◽  
Flow Fields ◽  
Vortex Structures

LES study of turbulent flow fields over hilly terrains — Comparisons of inflow turbulence generation methods and SGS models

2020 ◽  
Vol 204 ◽  
pp. 104230
Author(s):  
Qingshan Yang ◽  
Tong Zhou ◽  
Bowen Yan ◽  
Pham Van Phuc ◽  
Weicheng Hu
Keyword(s):  
Turbulent Flow ◽  
Flow Fields ◽  
Inflow Turbulence ◽  
Turbulence Generation

Effects of a fully submerged boulder within a boulder array on the mean and turbulent flow fields: Implications to bedload transport

2012 ◽  
Vol 60 (6) ◽  
pp. 1502-1546 ◽  
Author(s):  
Athanasios N. Papanicolaou ◽  
Casey M. Kramer ◽  
Achilleas G. Tsakiris ◽  
Thorsten Stoesser ◽  
Sandeep Bomminayuni ◽  
...  
Keyword(s):  
Turbulent Flow ◽  
Flow Fields ◽  
Bedload Transport ◽  
The Mean ◽  
Boulder Array

Investigation of Flow Fields Around Rectangular Cylinder Under Turbulent Flow by Les

2014 ◽  
Vol 8 (3) ◽  
pp. 396-406 ◽  
Author(s):  
Md. Naimul Haque ◽  
Hiroshi Katsuchi ◽  
Hitoshi Yamada ◽  
Mayuko Nishio
Keyword(s):  
Turbulent Flow ◽  
Flow Fields ◽  
Rectangular Cylinder

The Burning Velocity in a CFR Engine with Different Turbulent Flow Fields Generated by Intake Valves

1980 ◽  
Author(s):  
S. Chaibongsai ◽  
T. Kadota ◽  
N.A. Henein
Keyword(s):  
Turbulent Flow ◽  
Burning Velocity ◽  
Flow Fields

Three-Dimensional Unsteady Simulation in a Water Turbine

2013 ◽  
Vol 655-657 ◽  
pp. 227-230
Author(s):  
Ying Hu ◽  
Kun Wang
Keyword(s):  
Turbulent Flow ◽  
Transient Flow ◽  
Flow Analysis ◽  
Flow Fields ◽  
Francis Turbine ◽  
Optimum Operating ◽  
Time Step ◽  
Optimum Operating Condition ◽  
Water Turbine ◽  
Turbine Model

This paper introduces the 3D numerical simulation of unsteady turbulent flow in the entire flow passage of a water turbine model with CFD technology. A new and available method for the design of a Francis turbine has been explored. The boundary conditions have been implemented based on the 3D averaged N-S equations. The governing equations are discreted on space by the finite volume method and on time step by the finite difference method. The 3D unsteady turbulent flow in an entire Francis turbine model is calculated successfully using the CFX-TASCflow software and RNG k-εturbulence model. Transient flow fields are simulated in the spiral case, the distributor, the runner and the draft tube. It is presented in this paper that the computer simulation of the flow fields in components of the Francis turbine at the optimum operating condition. Meanwhile, the velocity and pressure at any points in the flow fields can be obtained so as to provide the great value on the performance prediction. According to the simulating results, the flow analysis and the design experience, the design of components in a Francis turbine model can be improved and optimized. In this way, designers may decrease numbers of test and shorten the period for a model. Therefore, the cost of research and produce can be reduced.

scholarly journals Distillation and Visualization of Spatiotemporal Structures in Turbulent Flow Fields

2011 ◽  
Vol 318 (6) ◽  
pp. 062009
Author(s):  
Hans-Christian Hege ◽  
Ingrid Hotz ◽  
Jens Kasten
Keyword(s):  
Turbulent Flow ◽  
Flow Fields
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