The limiting behaviour of the turbulent transverse velocity component close to a wall

Kamalesh K. Sirkar; Thomas J. Hanratty

doi:10.1017/S002211207000201X

The limiting behaviour of the turbulent transverse velocity component close to a wall

Kamalesh K. Sirkar, Thomas J. Hanratty

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

Electrochemical techniques are used to measure the circumferential component of the velocity gradient s_z at the wall of a pipe through which a turbulent fluid is flowing. The ratio of the root-mean-squared value of s_z to the time-averaged velocity gradient is found to be 0·09 or 0·1, depending on whether corrections are made for frequency response. The frequency spectrum is similar to that for the component of the wall velocity gradient in the direction of mean flow. The amplitude distribution function for s_z is very roughly approximated by a Gaussian distribution.

Original language	English (US)
Pages (from-to)	605-614
Number of pages	10
Journal	Journal of Fluid Mechanics
Volume	44
Issue number	3
DOIs	https://doi.org/10.1017/S002211207000201X
State	Published - Nov 26 1970
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1017/S002211207000201X

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abstract = "Electrochemical techniques are used to measure the circumferential component of the velocity gradient sz at the wall of a pipe through which a turbulent fluid is flowing. The ratio of the root-mean-squared value of sz to the time-averaged velocity gradient is found to be 0·09 or 0·1, depending on whether corrections are made for frequency response. The frequency spectrum is similar to that for the component of the wall velocity gradient in the direction of mean flow. The amplitude distribution function for sz is very roughly approximated by a Gaussian distribution.",

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AB - Electrochemical techniques are used to measure the circumferential component of the velocity gradient sz at the wall of a pipe through which a turbulent fluid is flowing. The ratio of the root-mean-squared value of sz to the time-averaged velocity gradient is found to be 0·09 or 0·1, depending on whether corrections are made for frequency response. The frequency spectrum is similar to that for the component of the wall velocity gradient in the direction of mean flow. The amplitude distribution function for sz is very roughly approximated by a Gaussian distribution.

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The limiting behaviour of the turbulent transverse velocity component close to a wall

Abstract

All Science Journal Classification (ASJC) codes

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