AN INVESTIGATION OF TURBULENT RECTANGULAR JET DISCHARGED INTO A NARROW CHANNEL WEAK CROSSFLOW

A computational investigation of the mean flow field of turbulent rectangular jets issuing into a narrow channel crossflow is presented. The length of the jet slot spans more than 55% of the crossflow channel bed, leaving a small clearance between the jet edge and sidewalls. A finite volume code emp...

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Bibliographic Details
Published in:Journal of Hydrodynamics 2008-04, Vol.20 (2), p.154-163
Main Authors: PATHAK, Manabendra, DASS, K. Anoop, DEWAN, Anupam
Format: Article
Language:English
Subjects:
crossflow
Engineering
Engineering Fluid Dynamics
Hydrology/Water Resources
narrow channel
Numerical and Computational Physics
Simulation
turbulent jet
velocity ratio
vortices
交叉流动
速度比率
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Summary:A computational investigation of the mean flow field of turbulent rectangular jets issuing into a narrow channel crossflow is presented. The length of the jet slot spans more than 55% of the crossflow channel bed, leaving a small clearance between the jet edge and sidewalls. A finite volume code employing the standard k-εmodel is used to predict the mean, three-dimensional flow field. The mean flow field is investigated for two velocity ratios （6 and 9）. Important flow features, such as the formation of different vortical structures and their characteristics owing to different values of the velocity ratio, are discussed. Some predicted results are compared with the experimental data reported in the literature. The predicted mean and turbulent flow properties are shown to be in good agreement with the experimental data.
ISSN:1001-6058
1878-0342
1000-4874
DOI:10.1016/S1001-6058(08)60041-4