An Explicit and Continuous Friction Factor Correlation for Helical Tubes with Arbitrary Roughness

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Authors
Adams, Robert
Author (Corporation)
Publication date
11.04.2018
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01A - Journal article
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Parent work
Frontiers in Heat and Mass Transfer
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Volume
11
Issue / Number
Pages / Duration
1-7
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Global Digital Central
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Abstract
Convergence of numerical schemes for pipe network analysis requires continuous modelling of pressure losses in the transition region between laminar and turbulent regions. Several existing correlations for the friction factor of straight pipes and helical tubes are presented. Based on these correlations a new explicit correlation for helical tubes with arbitrary surface roughness is derived. The friction factor is expressed as a continuous function of the Reynolds number covering laminar, transitional, and turbulent flow regions. Potential sources of error are also discussed, including the effects of tube deformation caused by the bending process.
Keywords
Pressure loss, friction factor, pipe flow, helical tube
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ISSN
2151-8629
Language
English
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Yes
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Published
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Peer review of the complete publication
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Citation
EISMANN, Ralph und Robert ADAMS, 2018. An Explicit and Continuous Friction Factor Correlation for Helical Tubes with Arbitrary Roughness. Frontiers in Heat and Mass Transfer. 11 April 2018. Bd. 11, S. 1–7. DOI 10.5098/hmt.11.4. Verfügbar unter: https://doi.org/10.26041/fhnw-3687