NUMERICAL STUDY OF NONISOTHERMAL THREE-DIMENSIONAL ROOM AIRFLOW : Room airflow analysis by means of algebraic stress model Part 4

1993 ◽  
Vol 443 (0) ◽  
pp. 15-20
Author(s):  
Shinsuke KATO ◽  
Shuzo MURAKAMI ◽  
Yasushi KONDO
Keyword(s):  
Numerical Study ◽  
Three Dimensional ◽  
Stress Model ◽  
Algebraic Stress Model

scholarly journals New explicit algebraic stress model for three-dimensional turbulent flows

PAMM ◽  
2016 ◽  
Vol 16 (1) ◽  
pp. 587-588
Author(s):  
Igor Vigdorovich ◽  
Holger Foysi
Keyword(s):  
Turbulent Flows ◽  
Three Dimensional ◽  
Stress Model ◽  
Algebraic Stress Model

Flow Structure Issued from a Bent Chimney around a Cylindrical Obstacle: Effect of the Aspect Ratio

2011 ◽  
Vol 312-315 ◽  
pp. 965-970 ◽  
Author(s):  
Inès Bhouri Baouab ◽  
Nejla Mahjoub Said ◽  
Hatem Mhiri ◽  
Georges Le Palec ◽  
Philippe Bournot
Keyword(s):  
Numerical Study ◽  
Three Dimensional ◽  
Reynolds Stress Model ◽  
Stress Model ◽  
Closure Model ◽  
Turbulence Closure Model ◽  
Cylindrical Obstacle ◽  
Recirculation Zones ◽  
Obstacle Effect ◽  
Pollutants Dispersion

We present in this work a numerical study of pollutants’ dispersion resulting from a bent chimney around a cylindrical obstacle. A three-dimensional numerical model, based upon the RSM (Reynolds Stress Model) turbulence closure model was used. The adopted grid is not uniform, particularly refined near the chimney and around the cylindrical building. The domain is large enough to be able to visualize the recirculation zones and the vortices created by the building. The results obtained in three dimensional configurations make possible the description of the dynamics and mass features under different aspect rations.

scholarly journals Three-Dimensional Simulation of High Reynolds Turbulent Flows in a Rectangular Open Channel with the Presence of a Disruptive Element (Obstacles) Transversely

2015 ◽  
Vol 23 (1) ◽  
pp. 1-7
Author(s):  
H’ssine Boudiaf ◽  
Ali Fourar ◽  
Fawaz Massouh
Keyword(s):  
Turbulent Flows ◽  
Reynolds Stress ◽  
Open Channel ◽  
Numerical Study ◽  
Numerical Models ◽  
Three Dimensional ◽  
Reynolds Stress Model ◽  
Stress Model ◽  
Dimensional Simulation ◽  
High Reynolds

Abstract This study aims at describing a three-dimensional simulation of a turbulent flow with a high Reynolds number in a rectangular open channel with the presence of a disruptive element (obstacles) transversely. The numerical study is based on measuring the flow velocity in two directions, i.e., horizontal and vertical, in four planes located near the obstacle built across a simulated channel. For the modeling of the free surface, a Volume Of Fluid (VOF) multiphase flow model is used. In the present case, namely a study of turbulence, three numerical models are compared, a k-ε standard, a k-w standard and a Reynolds Stress Model (RSM). The verification of the simulation results has allowed us to show the advantages of the Reynolds stress model. This model is more representative of the phenomena of an intense vortex flow in the presence of obstacles, especially in drainage systems.

EXPERIMENTAL AND NUMERICAL STUDY OF THREE-DIMENSIONAL NATURAL CONVECTION AND FREEZING IN WATER

1994 ◽  
Author(s):  
C. Abegg ◽  
Graham de Vahl Davis ◽  
W.J. Hiller ◽  
St. Koch ◽  
Tomasz A. Kowalewski ◽  
...  
Keyword(s):  
Natural Convection ◽  
Numerical Study ◽  
Three Dimensional

Predicting S-duct flow using a composite algebraic stress model

AIAA Journal ◽  
1998 ◽  
Vol 36 ◽  
pp. 327-335
Author(s):  
T. Jongen ◽  
G. Mompean ◽  
T. B. Gatski
Keyword(s):  
Stress Model ◽  
Duct Flow ◽  
Algebraic Stress Model
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