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PRESSURE STATISTICS IN HIGH-REYNOLDS NUMBER TURBULENT BOUNDARY LAYER

Yoshiyuki Tsuji
KTH Mechanics, Royal Institute of Technology, 100 44 Stockholm, Sweden; Department of Energy Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8503, Japan

Jens H. M. Fransson
Linne Flow Centre Department of Mechanics KTH–Royal Institute of Technology SE–100 44 Stockholm, Sweden

P. Henrik Alfredsson
Liné Flow Centre, KTH Mechanics, Osquars Backe 18, SE-100 44 Stockholm, Sweden

Arne V. Johansson
Linne FLOW Centre, Dept. of Mechanics, Royal Institute of Technology SE-100 44 Stockholm, Sweden

Аннотация

Static pressure fluctuations are an important ingredient in turbulence, e.g. in the pressure strain terms which redistribute turbulence among the different fluctuating velocity components. In the present study, both mean and fluctuating static pressure and wall pressure have been measured simultaneously in turbulent boundary layers. The pressure inside the boundary layer is measured with a specially designed probe. Results on mean and fluctuation distributions, spectra, Reynolds number dependence, and correlation functions are reported.