期刊
MEASUREMENT SCIENCE AND TECHNOLOGY
卷 13, 期 10, 页码 1608-1614出版社
IOP PUBLISHING LTD
DOI: 10.1088/0957-0233/13/10/314
关键词
static pressure; pressure tapping
Measurements are reported of the error in wall static pressure reading due to the finite size of the pressure tapping. The experiments were performed in incompressible turbulent pipe flow over a wide range of Reynolds numbers, and the results indicate that the correction term (as a fraction of the wall stress) continues to increase as the hole Reynolds number d(+) = u(tau)d/v increases, contrary to previous studies. For small holes relative to the pipe diameter the results follow a single curve, but for larger holes the data diverge from this universal behaviour at a point that depends on the ratio of the hole diameter to the pipe diameter.
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