A Reynolds Stress Model for Turbulent Corner Flows—Part II: Comparisons Between Theory and Experiment

1976 ◽  
Vol 98 (2) ◽  
pp. 269-276 ◽  
Author(s):  
F. B. Gessner ◽  
J. K. Po
Keyword(s):  
Reynolds Stress ◽  
Reynolds Stress Model ◽  
Length Variation ◽  
Stress Model ◽  
Duct Flow ◽  
Rectangular Duct ◽  
Proposed Model ◽  
Alternate Model ◽  
Corner Flows ◽  
Good Agreement

The applicability of the Reynolds stress model developed in Part I to fully developed rectangular duct flow is investigated. Two sets of experimental data are analyzed in order to prescribe a representative mixing length variation and appropriate values for the constants in the model. Predicted Reynolds stress values are in good agreement with their experimental counterparts for both sets of data. These results are compared with predictions referred to an alternate model in order to explain discrepancies observed in a previous study. Possible extensions of the proposed model to increase its flexibility are discussed.

A Reynolds Stress Model for Turbulent Corner Flows—Part I: Development of the Model

1976 ◽  
Vol 98 (2) ◽  
pp. 261-268 ◽  
Author(s):  
F. B. Gessner ◽  
A. F. Emery
Keyword(s):  
Reynolds Stress ◽  
Flow Behavior ◽  
Reynolds Stress Model ◽  
Turbulence Structure ◽  
Stress Model ◽  
Mixing Length ◽  
Corner Flow ◽  
Global Representation ◽  
Corner Flows ◽  
Algebraic Reynolds Stress Model

A Reynolds stress model is proposed for modeling the local turbulence structure in flow along a streamwise corner. Initial discussion centers on present methods of predicting internal and extenal corner flow behavior. An algebraic Reynolds stress model is then developed by operating on a modified form of the Reynolds stress transport equations. Application of the model involves specification of two empirical constants and a global representation for the mixing length. The paper concludes with a discussion of the features and limitations of the model.

Numerical Simulation of Flow around High-Rise Buildings Based on Reynolds Stress Model

2014 ◽  
Vol 580-583 ◽  
pp. 3057-3061
Author(s):  
Zu Peng Zhang ◽  
Wei Zhang ◽  
Guo Ping Chen
Keyword(s):  
Wind Tunnel ◽  
Reynolds Stress ◽  
Reynolds Stress Model ◽  
Wind Engineering ◽  
Stress Model ◽  
High Rise ◽  
Tunnel Model ◽  
Inflow Turbulence ◽  
Model Equations ◽  
Good Agreement

In this paper, a modified inlet atmosphere boundary layer (ABL) which satisfies the turbulence model equations is applied to computational wind engineering. The new inflow turbulence boundary condition applied to simulating the flow in the cavity is verified that it is more in line with the actual flows, and then it is used to establish the numerical wind tunnel model to simulate the flow around high-rise buildings. The results are in good agreement with the wind tunnel experimental data, which show the modified ABL combined with Reynolds Stress Model (RSM) is able to better simulate the flow around high-rise buildings.

A Note in Comment on “A Reynolds Stress Model for Turbulent Corner Flows”

1977 ◽  
Vol 99 (3) ◽  
pp. 593-595 ◽  
Author(s):  
Ronald M. C. So
Keyword(s):  
Reynolds Stress ◽  
Shear Flows ◽  
Reynolds Stress Model ◽  
Turbulent Shear ◽  
Stress Model ◽  
General Applicability ◽  
Closure Models ◽  
Closure Scheme ◽  
Stress Components ◽  
Corner Flows

In [1] Gessner and Emery proposed a closure scheme for the Reynolds-stress equations such that the resultant equations are algebraic and can be solved for the various stress components for corner flows. This note summarizes the earlier work on such closure models for different kinds of turbulent shear flows which was omitted by Gessner and Emery and comments on the general applicability of the model proposed by Gessner and Emery.

Prediction of strongly curved turbulent duct flows with Reynolds stress model

AIAA Journal ◽  
1997 ◽  
Vol 35 ◽  
pp. 91-98
Author(s):  
Jiang Luo ◽  
Budugur Lakshminarayana
Keyword(s):  
Reynolds Stress ◽  
Reynolds Stress Model ◽  
Stress Model
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