On the Mechanism of Turbulent Coherent Structure (Ⅲ)——A Statistical and Dynamical Model of Coherent Structure and Its Heat Transfer Mechanism

Lu Zhiming; Liu Yulu

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Article Navigation > Applied Mathematics and Mechanics > 1998 > 19(8): 659-665

Lu Zhiming, Liu Yulu. On the Mechanism of Turbulent Coherent Structure (Ⅲ)——A Statistical and Dynamical Model of Coherent Structure and Its Heat Transfer Mechanism[J]. Applied Mathematics and Mechanics, 1998, 19(8): 659-665.

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On the Mechanism of Turbulent Coherent Structure (Ⅲ)——A Statistical and Dynamical Model of Coherent Structure and Its Heat Transfer Mechanism

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

Received Date: 1997-01-13
Publish Date: 1998-08-15

Abstract

Abstract

Following Tsai&Ma^[1] and Tsai & Liu^[2],a statistical and dynamical near-wall turbulent coherent structural model with separate consideration of two different portions:locally generated and up-stream transported large eddies has been established.With this model,heat transfer in a fully developed open channel in the absence of pressure gradient is numerically simulated.Database of fluctuations of velocity and temperature has also been set.Numerical analysis shows the existence of high-low temperature streak caused by near-wall coherent structure and its swing in the lateral direction. Numerical results are in accordance with the computations and experimental results of other researchers.
- coherent structure,
- statistical and dynamical model,
- heat transfer

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References(12)

References

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