THERMAL SCIENCE

International Scientific Journal

Ventsislav D. Zimparov

,

Valentin M. Petkov

,

Hristo N. Hristov

OPTIMAL SPACINGS FOR CHANNELS WITH HAGEN-POISEUILLE FLUID-FLOW AND MASS TRANSFER - THE ROLE OF THE BEJAN NUMBER

ABSTRACT
This work is a continuation of the recent studies [1, 2], revealing that the unique form of the Bejan number is robust (unchangeable) and appears independently in all Hagen-Poiseuille fluid-flows with heat or mass transfer by convection. The other dimensionless groups, derived from the First law of thermodynamics (related to the convection heat or mass transfer), and named Bejan numbers are combinations of the unique Bejan number with Prandtl or Schmidt numbers, respectively, and ratios of geometrical parameters of the system. In this paper we continue developing this idea through presenting new examples of problems in the field of convection mass transfer in pure laminar duct flows.
KEYWORDS
Bejan number, optimal spacing, discriminated dimensional analysis, mass transfer
PAPER SUBMITTED: 2021-05-28
PAPER REVISED: 2021-06-05
PAPER ACCEPTED: 2021-06-10
PUBLISHED ONLINE: 2021-12-18
DOI REFERENCE: https://doi.org/10.2298/TSCI21S2295Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Special issue 2, PAGES [295 - 301]
REFERENCES
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Optimal spacings for channels with Hagen-Poiseuille fluid-flow and mass transfer - the role of the Bejan number

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence