Friction Models for Flood and Pipe Flow Simulations

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 2217

Special Issue Editors


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Guest Editor
1. Faculty of Electronic Engineering, University of Niš, 18000 Niš, Serbia
2. IT4Innovations National Supercomputing Centre, VŠB—Technical University of Ostrava, 70800 Ostrava, Czech Republic
Interests: hydraulics; flow-through pipelines, including treatment and transport; energy modeling; natural gas and hydrogen; energy policy with a focus on European energy security and offshore oil and gas safety
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
IT4Innovations National Supercomputing Center, VŠB—Technical University of Ostrava, 70800 Ostrava, Czech Republic
Interests: reliability; risk analysis; energy security; information retrieval; industrial statistics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Methods based on artificial intelligence, such as symbolic regression, are useful tools to find simple algebraic but accurate relations to simulate data from experiments that simulate flow through pipes during floods. In addition, special functions such as the Lambert W-function or its cognate the Wright ω-function can be used to develop powerful flow friction approximations. Thus, we can see that flow friction estimation includes interdisciplinary research, which includes not only mechanical, civil or petroleum engineering but also artificial intelligence, mathematics (asymptotic expansion of special functions, Padé approximants, Lagrange theorem, etc.) and statistics.

We welcome articles, review papers and short notes from academia and from practitioners from all scientific branches where the fluid flow can occur. Especially, the friction simulations of floods and submarine pipelines are welcome.

Dr. Dejan Brkić
Dr. Pavel Praks
Guest Editors

Manuscript Submission Information

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Keywords

  • flood
  • pipe flow
  • water
  • Newtonian fluids
  • non-Newtonian fluids
  • special functions
  • gas distribution
  • flow friction
  • approximations

Published Papers (1 paper)

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Research

9 pages, 1655 KiB  
Article
Reliability-Based Criterion for Evaluating Explicit Approximations of Colebrook Equation
by Said M. Easa, Ahmed A. Lamri and Dejan Brkić
J. Mar. Sci. Eng. 2022, 10(6), 803; https://doi.org/10.3390/jmse10060803 - 11 Jun 2022
Cited by 1 | Viewed by 1311
Abstract
Numerous explicit approximations of the Colebrook equation have been developed and evaluated based on two criteria: prediction accuracy and computational efficiency. This paper introduces a new evaluation criterion based on the reliability of each equation. The reliability is defined by the coefficient of [...] Read more.
Numerous explicit approximations of the Colebrook equation have been developed and evaluated based on two criteria: prediction accuracy and computational efficiency. This paper introduces a new evaluation criterion based on the reliability of each equation. The reliability is defined by the coefficient of variation (CV) of the explicit friction factor that is a function of the variabilities of component random variables (roughness height of the internal pipe surface and kinematic viscosity of the fluid). The coefficient of variation of the friction factor depends on its first derivative for roughness height of the inner pipe surface and kinematic viscosity of the fluid and their correlation. Seven explicit approximations were evaluated using the new reliability-based criterion. The results show that all explicit approximations are very reliable, but variations exist regarding the reliability level. The reliabilities of the seven approximations is very close for the rough-flow regime and when the CV of the viscosity is minimal. However, for the smooth-flow regime, and when the CV of the roughness is minimal, various approximations showed substantially different reliabilities. The novelty of the proposed criterion is that it addresses an evaluation dimension that complements the accuracy and efficiency criteria. Full article
(This article belongs to the Special Issue Friction Models for Flood and Pipe Flow Simulations)
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