Large-Scale Vortical Structures Produced by an Impinging Density Jet in Shallow Crossflow

FAN Jing-yu; WANG Dao-zeng; ZHANG Yan

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Article Navigation > Applied Mathematics and Mechanics > 2006 > 27(3): 325-330

FAN Jing-yu, WANG Dao-zeng, ZHANG Yan. Large-Scale Vortical Structures Produced by an Impinging Density Jet in Shallow Crossflow[J]. Applied Mathematics and Mechanics, 2006, 27(3): 325-330.

Citation:

FAN Jing-yu, WANG Dao-zeng, ZHANG Yan. Large-Scale Vortical Structures Produced by an Impinging Density Jet in Shallow Crossflow[J]. Applied Mathematics and Mechanics, 2006, 27(3): 325-330.

Citation:

FAN Jing-yu, WANG Dao-zeng, ZHANG Yan. Large-Scale Vortical Structures Produced by an Impinging Density Jet in Shallow Crossflow[J]. Applied Mathematics and Mechanics, 2006, 27(3): 325-330.

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Large-Scale Vortical Structures Produced by an Impinging Density Jet in Shallow Crossflow

1.
Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, P. R. China;

Received Date: 2004-05-25
Rev Recd Date: 2005-11-15
Publish Date: 2006-03-15

Abstract

Abstract

The large-scale vortical structures produced by an impinging density jet in shallow crossflow were numerically investigated in detail using RNG turbulence model.The scales,formation mechanism and evolution feature of the upstream wall vortex in relation to stagnation point and the Scarf vortex in near field were analyzed.The computed characteristic scales of the upstream vortex show distinguished three-dimensionality and vary with the velocity ratio and the water depth.The Scarf vortex in the near field plays an important role in the lateral concentration distributions of the impinging jet in crossflow.When the velocity ratio is relatively small,there exists a distinct lateral high concentration aggregation zone at the lateral edge between the bottom layer wall jet and the ambient crossflow,which is dominated by the Scarf vortex in the near field.
- impinging jet,
- crossflow,
- large-scale vortical structure,
- concentration distribution

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References(6)

References

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