CaltechAUTHORS
  A Caltech Library Service

Further observations on the mean velocity distribution in fully developed pipe flow

McKeon, B. J. and Li, J. and Jiang, W. and Morrison, J. F. and Smits, A. J. (2004) Further observations on the mean velocity distribution in fully developed pipe flow. Journal of Fluid Mechanics, 501 . pp. 135-147. ISSN 0022-1120. http://resolver.caltech.edu/CaltechAUTHORS:MCKjfm04b

[img]
Preview
PDF
See Usage Policy.

278Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:MCKjfm04b

Abstract

The measurements by Zagarola & Smits (1998) of mean velocity profiles in fully developed turbulent pipe flow are repeated using a smaller Pitot probe to reduce the uncertainties due to velocity gradient corrections. A new static pressure correction (McKeon & Smits 2002) is used in analysing all data and leads to significant differences from the Zagarola & Smits conclusions. The results confirm the presence of a power-law region near the wall and, for Reynolds numbers greater than 230×10^3 (R+ >5×10^3), a logarithmic region further out, but the limits of these regions and some of the constants differ from those reported by Zagarola & Smits. In particular, the log law is found for 600<y+ <0.12R+ (instead of 600<y+ <0.07R+), and the von Kármán constant κ, the additive constant B for the log law using inner flow scaling, and the additive constant B∗ for the log law using outer scaling are found to be 0.421 ± 0.002, 5.60 ± 0.08 and 1.20 ± 0.10, respectively, with 95% confidence level (compared with 0.436±0.002, 6.15±0.08, and 1.51±0.03 found by Zagarola & Smits). The data also confirm that the pipe flow data for ReD ≤ 13.6×10^6 (as a minimum) are not affected by surface roughness.


Item Type:Article
Additional Information:Copyright © 2004 Cambridge University Press. Reprinted with permission. (Received 7 October 2002 and in revised form 19 September 2003). Published online 23 February 2004 The support of ONR under Grant Nos. N00014-98-1-0525, N00014-99-1-0340, and N00014-03-1-0320 is gratefully acknowledged. J.F.M. is indebted to the Engineering and Physical Sciences Research Council (grants GR/M64536/01 and GR/R48193/01), the Royal Academy of Engineering (England) and the Leverhulme Trust (grant F/07058/H) for financial support.
Record Number:CaltechAUTHORS:MCKjfm04b
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:MCKjfm04b
Alternative URL:http://dx.doi.org/10.1017/S0022112003007304
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4472
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:24 Aug 2006
Last Modified:26 Dec 2012 08:59

Repository Staff Only: item control page