Details

Autor(en) / Beteiligte

• Evans, Neal D.
• Capone, Dean E.
• Bonness, William K.

Titel

Low-wavenumber turbulent boundary layer wall-pressure measurements from vibration data on smooth and rough cylinders in pipe flow

Ist Teil von

• The Journal of the Acoustical Society of America, 2011-04, Vol.129 (4_Supplement), p.2387-2387

Erscheinungsjahr

2011

Quelle

American Institute of Physics (AIP) Journals

Beschreibungen/Notizen

• The vibration response of a thin cylindrical shell excited by a fully-developed turbulent boundary layer is measured and used to extract the fluctuating pressure levels generated by the boundary layer. Parameters used to extract the turbulent boundary layer pressure levels are determined via experimental modal analysis of the water-filled pipe and measured vibration levels from flow through the pipe at 6 m/s. Hydrostatic head from a large reservoir provides the low-noise source of steady flow for measuring the low-wavenumber fluctuating pressure levels. Measurements are reported for smooth, transitionally rough, and fully rough conditions and are compared to the turbulent boundary layer pressure models of Chase, Smol’yakov, and Howe.