Numerical simulation of unsteady natural convection flow inside a pattern of connected open square cavities

Mahmoud M. El-Gendi

doi:10.1016/j.ijthermalsci.2018.02.008

Numerical simulation of unsteady natural convection flow inside a pattern of connected open square cavities

Mahmoud M. El-Gendi

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

Natural convection flow has several applications and is investigated extensively in the literature. The previous studies investigated the flow inside an isolated square cavity whether is closed or open. In the present study, flow simulations inside a pattern of connected open cavities for Ra from 10³ to 10⁶ are carried out using unsteady compressible Navier-Stokes solver. The flow inside the open cavity is circulated naturally. For Ra = 10⁵ and 10⁶, the results show that the flow structure is unsymmetrical, unstable, unsteady, and periodic. As a whole, the values of Nusselt number and velocities in the open cavity are much higher than those in the closed cavity.

Original language	English
Pages (from-to)	373-383
Number of pages	11
Journal	International Journal of Thermal Sciences
Volume	127
DOIs	https://doi.org/10.1016/j.ijthermalsci.2018.02.008
Publication status	Published - May 2018
Externally published	Yes

Keywords

Closed cavity
Natural convection
Open cavity
Unstable flow
Unsteady flow

ASJC Scopus subject areas

Condensed Matter Physics
General Engineering

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10.1016/j.ijthermalsci.2018.02.008

Cite this

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title = "Numerical simulation of unsteady natural convection flow inside a pattern of connected open square cavities",

abstract = "Natural convection flow has several applications and is investigated extensively in the literature. The previous studies investigated the flow inside an isolated square cavity whether is closed or open. In the present study, flow simulations inside a pattern of connected open cavities for Ra from 103 to 106 are carried out using unsteady compressible Navier-Stokes solver. The flow inside the open cavity is circulated naturally. For Ra = 105 and 106, the results show that the flow structure is unsymmetrical, unstable, unsteady, and periodic. As a whole, the values of Nusselt number and velocities in the open cavity are much higher than those in the closed cavity.",

keywords = "Closed cavity, Natural convection, Open cavity, Unstable flow, Unsteady flow",

author = "El-Gendi, \{Mahmoud M.\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Masson SAS",

year = "2018",

month = may,

doi = "10.1016/j.ijthermalsci.2018.02.008",

language = "English",

volume = "127",

pages = "373--383",

journal = "International Journal of Thermal Sciences",

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T1 - Numerical simulation of unsteady natural convection flow inside a pattern of connected open square cavities

AU - El-Gendi, Mahmoud M.

PY - 2018/5

Y1 - 2018/5

N2 - Natural convection flow has several applications and is investigated extensively in the literature. The previous studies investigated the flow inside an isolated square cavity whether is closed or open. In the present study, flow simulations inside a pattern of connected open cavities for Ra from 103 to 106 are carried out using unsteady compressible Navier-Stokes solver. The flow inside the open cavity is circulated naturally. For Ra = 105 and 106, the results show that the flow structure is unsymmetrical, unstable, unsteady, and periodic. As a whole, the values of Nusselt number and velocities in the open cavity are much higher than those in the closed cavity.

AB - Natural convection flow has several applications and is investigated extensively in the literature. The previous studies investigated the flow inside an isolated square cavity whether is closed or open. In the present study, flow simulations inside a pattern of connected open cavities for Ra from 103 to 106 are carried out using unsteady compressible Navier-Stokes solver. The flow inside the open cavity is circulated naturally. For Ra = 105 and 106, the results show that the flow structure is unsymmetrical, unstable, unsteady, and periodic. As a whole, the values of Nusselt number and velocities in the open cavity are much higher than those in the closed cavity.

KW - Closed cavity

KW - Natural convection

KW - Open cavity

KW - Unstable flow

KW - Unsteady flow

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UR - https://www.scopus.com/pages/publications/85042277053#tab=citedBy

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DO - 10.1016/j.ijthermalsci.2018.02.008

M3 - Article

AN - SCOPUS:85042277053

SN - 1290-0729

VL - 127

SP - 373

EP - 383

JO - International Journal of Thermal Sciences

JF - International Journal of Thermal Sciences

ER -

Numerical simulation of unsteady natural convection flow inside a pattern of connected open square cavities

Abstract

Keywords

ASJC Scopus subject areas

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