Al-Tameemi, W.T.M. and Ricco, P. (2018) Pressure-loss coefficient of 90 deg sharp-angled miter elbows. Journal of Fluids Engineering, 140 (6). 061102. ISSN 0098-2202
Abstract
Copyright © 2018 by ASME. The pressure drop across 90 deg sharp-angled miter elbows connecting straight circular pipes is studied in a bespoke experimental facility by using water and air as working fluids flowing in the range of bulk Reynolds number 500 < Re < 60; 000. To the best of our knowledge, the dependence on the Reynolds number of the pressure drop across the miter elbow scaled by the dynamic pressure, i.e., the pressure-loss coefficient K, is reported herein for the first time. The coefficient is shown to decrease sharply with the Reynolds number up to about Re = 20; 000 and, at higher Reynolds numbers, to approach mildly a constant K = 0:9, which is about 20% lower than the currently reported value in the literature. We quantify this relation and the dependence between K and the straight-pipe friction factor at the same Reynolds number through two new empirical correlations, which will be useful for the design of piping systems fitted with these sharp elbows. The pressure drop is also expressed in terms of the scaled equivalent length, i.e., the length of a straight pipe that would produce the same pressure drop as the elbow at the same Reynolds number.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 ASME |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 02 Mar 2018 11:45 |
Last Modified: | 02 Mar 2018 11:45 |
Published Version: | https://doi.org/10.1115/1.4038986 |
Status: | Published |
Publisher: | American Society of Mechanical Engineers |
Refereed: | Yes |
Identification Number: | 10.1115/1.4038986 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:127660 |