SPECIAL ISSUE: Proceedings of the Third International Symposium on Physics of Fluids (ISPF3), 15–18 June, 2009, Jiuzhaigou, China — Applications of Fluid MechanicsNo Access

MULTI-SCALE STRUCTURES IN COMPRESSIBLE TURBULENT MIXING LAYERS

TIE-JIN WANG

State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China

The authors wish it to be known that, in their opinion, the first two authors should be regarded as joint First Authors.

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XIAO-TIAN SHI

State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China

The authors wish it to be known that, in their opinion, the first two authors should be regarded as joint First Authors.

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JUN CHEN

State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China

Corresponding author.

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, and

ZHEN-SU SHE

State Key Laboratory for Turbulence and Complex Systems, College of Engineering, Peking University, Beijing 100871, China

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https://doi.org/10.1142/S0217984910023797Cited by:2 (Source: Crossref)

Abstract

A size-dependent gradient method is used to study the Mie scattering visualization of the compressible turbulent mixing layers at two convective Mach numbers M_c = 0.107 and 0.474 in order to reveal multi-scale structures. Coherent vortices and inclined wavy structures are clearly visualized by applying the method. Similarity between the grey-level and the velocity fluctuations is discovered with the spectral analysis. These results suggest a way to capture turbulent structures from scalar fields.

Supported by the NNSF of China under Grant Nos 90716008 and 10572004 and by the MOST under 973 project 2009CB724100.

Keywords:

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