Features of separating turbulent boundary layersIn the present study of two strong adverse pressure gradient flows, mean flow and turbulence characteristics are measured, together with frequency spectra, using hot-wire and laser anemometry. In these separating flows, reattachment occurs over a shorter distance than separation. It is noted that the outer flow variables form a unique set of scaling parameters for streamwise power spectra in adverse pressure gradient flows. The inner flow scaling of Perry et al. (1985) for streamwise spectra does not hold in the backflow region unless the value of the downstream-upstream intermittency in the flow is unity.
Document ID
19880035237
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Nagabushana, K. A. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Agarwal, Naval K. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Simpson, Roger L. (Virginia Polytechnic Institute and State University Blacksburg, VA, United States)