A computational study on fluid flow and heat transfer through a rotating curved duct with rectangular cross section

Mondal, RN; Hasan, MS; Islam, MS; Islam, MZ; Saha, SC

A computational study on fluid flow and heat transfer through a rotating curved duct with rectangular cross section

Mondal, RN Hasan, MS Islam, MS Islam, MZ Saha, SC

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Publisher:: International Information and Engineering Technology Association
Publication Type:: Journal Article
Citation:: International Journal of Heat and Technology, 2021, 39, (4), pp. 1213-1224
Issue Date:: 2021-08-01

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Field	Value	Language
dc.contributor.author	Mondal, RN
dc.contributor.author	Hasan, MS
dc.contributor.author	Islam, MS
dc.contributor.author	Islam, MZ
dc.contributor.author	Saha, SC
dc.date.accessioned	2021-11-11T06:15:50Z
dc.date.available	2021-11-11T06:15:50Z
dc.date.issued	2021-08-01
dc.identifier.citation	International Journal of Heat and Technology, 2021, 39, (4), pp. 1213-1224
dc.identifier.issn	0392-8764
dc.identifier.uri	http://hdl.handle.net/10453/151512
dc.description.abstract	The understanding of fluid flow and heat transfer (HT) through a rotating curved duct (RCD) is important for different engineering applications. The available literature improved the understanding of the fluid flow and HT through a large-curvature rotating duct. However, the comprehensive knowledge of fluid flow and HT through an RCD with small curvature is little known. This numerical study aims to perform fluid flow characterization and HT through an RCD with curvature ratio 0.001. The spectral based numerical approach investigates the effects of rotation on fluid flow and HT for the Taylor number -1000≤TTTT≤1500. A constant pressure gradient force, the Dean number Dn = 100, and a constant buoyancy force parameter, the Grashof number Gr = 500 are used for the numerical simulation. Fortran code is developed for the numerical computations and Tecplot software is used for the post-processing purpose. The numerical study investigates steady solutions and a structure of two-branches of steady solutions is obtained for positive rotation. The transient solution reports the transitional flow patterns and HT through the rotating duct, and two- to four-vortex solutions are observed. In case of negative rotation, time-dependent solutions show that the Coriolis force exhibits an opposite effect to that of the curvature so that the flow characteristics exhibit various flow instabilities. The numerical result shows that convective HT is increased with the increase of rotation and highly complex secondary flow patterns influence the overall HT from the heated wall to the fluid. To validate the numerical results, a comparison with the experimental data is provided, which shows that a good agreement is attained between the numerical and experimental investigations.
dc.language	en
dc.publisher	International Information and Engineering Technology Association
dc.relation.ispartof	International Journal of Heat and Technology
dc.relation.isbasedon	10.18280/ijht.390419
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	02 Physical Sciences
dc.subject.classification	Mechanical Engineering & Transports
dc.title	A computational study on fluid flow and heat transfer through a rotating curved duct with rectangular cross section
dc.type	Journal Article
utslib.citation.volume	39
utslib.for	02 Physical Sciences
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	open_access	*
dc.date.updated	2021-11-11T06:15:47Z
pubs.issue	4
pubs.publication-status	Published
pubs.volume	39
utslib.citation.issue	4

Abstract:

The understanding of fluid flow and heat transfer (HT) through a rotating curved duct (RCD) is important for different engineering applications. The available literature improved the understanding of the fluid flow and HT through a large-curvature rotating duct. However, the comprehensive knowledge of fluid flow and HT through an RCD with small curvature is little known. This numerical study aims to perform fluid flow characterization and HT through an RCD with curvature ratio 0.001. The spectral based numerical approach investigates the effects of rotation on fluid flow and HT for the Taylor number -1000≤TTTT≤1500. A constant pressure gradient force, the Dean number Dn = 100, and a constant buoyancy force parameter, the Grashof number Gr = 500 are used for the numerical simulation. Fortran code is developed for the numerical computations and Tecplot software is used for the post-processing purpose. The numerical study investigates steady solutions and a structure of two-branches of steady solutions is obtained for positive rotation. The transient solution reports the transitional flow patterns and HT through the rotating duct, and two- to four-vortex solutions are observed. In case of negative rotation, time-dependent solutions show that the Coriolis force exhibits an opposite effect to that of the curvature so that the flow characteristics exhibit various flow instabilities. The numerical result shows that convective HT is increased with the increase of rotation and highly complex secondary flow patterns influence the overall HT from the heated wall to the fluid. To validate the numerical results, a comparison with the experimental data is provided, which shows that a good agreement is attained between the numerical and experimental investigations.

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http://hdl.handle.net/10453/151512