Simultaneous measurements of fluctuating velocity and pressure in a turbulent mixing layer

Yoshitsugu Naka, Takeshi Omori, Shinnosuke Obi, Shigeaki Masuda

研究成果: Article査読

30 被引用数 (Scopus)

抄録

A novel experimental technique to measure static pressure fluctuation was applied in order to evaluate velocity-pressure correlation in a turbulent mixing layer. The developing region of the mixing layer was found to be out of equilibrium state, indicating the oscillatory velocity fluctuation due to vortex shedding and remarkable production of turbulence. The contribution of pressure-related terms in the transport equation of the Reynolds stress is found to be well captured by the present method. A simple model for pressure diffusion by Lumley gave a satisfactory approximation when the flow approached the self-similar state. However, the analogy between pressure diffusion and turbulent diffusion becomes weaker when the flow exhibits characteristics which are not found in the equilibrium state.

本文言語English
ページ(範囲)737-746
ページ数10
ジャーナルInternational Journal of Heat and Fluid Flow
27
4
DOI
出版ステータスPublished - 2006 8月

ASJC Scopus subject areas

  • 凝縮系物理学
  • 機械工学
  • 流体および伝熱

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