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Vol 170 Iss. 2
Pages:
124-126
Download volume:
RUS
Article

Problem of calculation of head losses by Leibenzon formula in mixed friction zone of turbulent mode

Authors:
N. V. Morozova1
A. A. Korshak2
About authors
  • 1 — Ufa State Petroleum Technical University
  • 2 — Ufa State Petroleum Technical University
Date submitted:
2006-08-17
Date accepted:
2006-10-05
Date published:
2007-04-11

Abstract

A comparative analysis of the experimental values of the hydraulic resistance coefficient λ in the mixed friction turbulent mode zone (ZMF) with the values calculated by the most common calculation dependencies has been carried out. It is found that if the co-equivalent roughness is determined on the basis of the solution of the inverse problem, then any of these formulas can be used to calculate λ in the ZMF with an error acceptable for engineering calculations. To reduce the error of friction head hτ calculation using Leibenzon's formula, the approximation of Altshul's formula was performed, as a result of which new coefficients β and m for ZMF were calculated and the boundary Reynolds numbers for this zone were specified.

Область исследования:
(Archived) Geotechnical engineering, powerengineering and automation
Funding:

None

Go to volume 170

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