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Second Symposium on Turbulence and Shear Flow Phenomena
June, 27-29, 2001, KTH, Stockholm, Sweden

DOI: 10.1615/TSFP2

STATISTICAL DESCRIPTION OF TURBULENT AXISYMMETRIC IMPINGING JET WITH EXCITED COHERENT STRUCTURES

pages 265-270
DOI: 10.1615/TSFP2.1180
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ABSTRACT

The statistical characteristics of axisymmetric submerged impinging jet are experimentally determined for conditions of external periodical forcing. The method of conditional sampling is used together with electrodiffusion technique and PIV. The triple decomposition of velocity and skin friction pulsations is applied in order to distinguish the coherent and random parts of turbulent kinetic energy and statistical characteristics. The major contribution of coherent component is ascertained.

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