Online citations, reference lists, and bibliographies.

Natural Convective Flows In A Horizontal Channel Provided With Heating Isothermal Blocks: Effect Of The Inter Blocks Spacing

M. Bakkas, M. Hasnaoui, A. Amahmid
Published 2010 · Chemistry

Cite This
Download PDF
Analyze on Scholarcy
Share
Abstract A numerical study of laminar steady natural convection induced in a two dimensional horizontal channel provided with rectangular heating blocks, periodically mounted on its lower wall, is carried out. The blocks’ surface temperature, T H ′ , is maintained constant and the former are connected with adiabatic surfaces. The upper wall of the channel is maintained cold at a temperature T C ′ T H ′ . Fluid flow, temperature fields and heat transfer rates are presented for different combinations of the governing parameters which are the Rayleigh number ( 10 2 ⩽ Ra ⩽ 2 × 10 6 ), the blocks’ spacing ( 1 / 4 ⩽ C = l ′ / H ′ ⩽ 1 ), the blocks’ height ( 1 / 8 ⩽ B = h ′ / H ′ ⩽ 1 / 2 ) and the relative width of the blocks ( A = ( L ′ - l ′ ) / H ′ = 1 / 2 ). The results obtained in the case of air (Pr = 0.72) show that the flow structure and the heat transfer are significantly influenced by the control parameters. It is found that there are situations where the increase of the blocks’ spacing leads to a reduction of heat transfer.
This paper references
10.1016/S0065-2717(08)70028-5
Thermal Control of Electronic Equipment and Devices
G. Peterson (1990)
10.1016/S0017-9310(05)80084-5
Numerical prediction of periodically fully developed natural convection in a vertical channel with surface mounted heat generating blocks
K. Kelkar (1993)
10.1080/104077800274073
TWO-DIMENSIONAL TRANSIENT NATURAL CONVECTION IN A REPETITIVE GEOMETRY SUBMITTED TO VARIABLE HEATING FROM BELOW: NUMERICAL IDENTIFICATION OF ROUTES LEADING TO CHAOS
S. Douamna (2000)
10.1016/J.IJHEATFLUIDFLOW.2006.07.003
Natural convection air-cooling of a substrate-mounted protruding heat source in a stack of parallel boards
G. Desrayaud (2007)
10.1016/S0017-9310(99)00164-7
Natural convection around horizontal downward-facing plate with rectangular grooves: experiments and numerical simulations
C. Kwak (2000)
10.1016/J.ENCONMAN.2008.03.017
Numerical study of natural convection heat transfer in a horizontal channel provided with rectangular blocks releasing uniform heat flux and mounted on its lower wall
M. Bakkas (2008)
10.1080/10407789008944803
Natural convection above an array of open cavities heated from below
M. Hasnaoui (1991)
10.1016/J.ENCONMAN.2005.05.002
Steady natural convection in a horizontal channel containing heated rectangular blocks periodically mounted on its lower wall
M. Bakkas (2006)
10.1016/J.ENCONMAN.2004.01.012
Chimney effect in a T form cavity with heated isothermal blocks: The blocks height effect
M. E. Alami (2004)
10.1016/S0017-9310(97)00045-8
Multiplicité des solutions en convection naturelle dans une géométrie répétitive
A. Amahmid (1997)
10.1016/0017-9310(90)90128-H
Natural convection of opposing/assisting flows in vertical channels with asymmetrically discrete heated ribs
Tsang-Yuan Lin (1990)
10.1007/978-1-4419-8509-5_4
Convection Heat Transfer in Electronic Equipment
R. Remsburg (1998)
10.1115/1.3250613
Convection heat transfer in electronic equipment cooling
F. Incropera (1988)
10.1016/J.ENCONMAN.2005.01.006
Numerical study of partitions effect on multiplicity of solutions in an infinite channel periodically heated from below
B. Abourida (2005)
10.1016/J.IJTHERMALSCI.2004.04.011
Study of natural convection heat transfer in a finned horizontal fluid layer
E. Arquis (2005)
10.1016/S0142-727X(02)00136-4
Laminar natural convection in a vertical isothermal channel with symmetric surface-mounted rectangular ribs
G. Desrayaud (2002)
10.1016/J.ENCONMAN.2005.01.005
Electronic components cooling by natural convection in horizontal channel with slots
M. E. Alami (2005)
10.1080/10407780500226548
Numerical Simulation of Boundary Conditions and the Onset of Instability in Natural Convection due to Protruding Thermal Sources in an Open Rectangular Channel
T. Icoz (2005)
10.1016/S0017-9310(96)00246-3
Natural convection heat transfer in vertical channels with and without transverse square ribs
G. Tanda (1997)
10.1063/1.1649989
Natural convection in a horizontal layer of fluid with a periodic array of square cylinders in the interior
J. Lee (2004)



This paper is referenced by
10.2298/TSCI150131092F
Numerical investigation of laminar forced convection heat transfer in rectangular channels with different block geometries using nano-fluids
Saeed Foroutani (2017)
10.1080/10407782.2013.784679
Heat Transfer Enhancement and Entropy Generation in a Square Enclosure in the Presence of Adiabatic and Isothermal Blocks
P. S. Mahapatra (2013)
10.1007/S00231-017-2160-Y
Effect of horizontal spacing between inner circular cylinders on three-dimensional natural convection in rectangular channel
Young Min Seo (2018)
Ze 1⁄2 Zf
E. Esmaeilzadeh (2013)
10.1007/S11012-016-0366-6
Buoyancy-driven fluid and energy flow in protruded heater enclosure
N. B. Biswas (2016)
10.1063/1.5115923
Enhancement of conjugate mixed convection heat transfer in a long horizontal channel with multiple rotating cylinders
Mohammed Nazrul Islam (2019)
10.1016/J.CSITE.2015.11.002
Heat transfer in an annular space fitted with heating isothermal blocks: Numerical bifurcation for low blocks height
A. Idrissi (2016)
10.1051/MECA/2014079
Effects of thermal boundary conditions, surface radiation and aspect ratio on thermal performance in “T” shallow cavity
Adel Sahi (2014)
10.1108/HFF-06-2018-0327
Effect of non-uniform asymmetric heating on the thermal and entropy generation characteristics for flow of Al2O3-water nanofluid in a micro-channel
Manash Protim Boruah (2019)
10.1016/J.ENCONMAN.2013.08.040
Enhanced heat transfer with corrugated flow channel in anode side of direct methanol fuel cells
H. Heidary (2013)
10.1016/J.ENCONMAN.2011.08.006
Natural convection in a horizontal channel provided with heat generating blocks: Discussion of the isothermal blocks validity
Driss Mouhtadi (2012)
10.1007/978-981-13-1405-6_86
Turbulent Forced Convection Heat Transfer in a Horizontal Partitioned Channel
K. Amghar (2018)
Semantic Scholar Logo Some data provided by SemanticScholar