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S. Haaland, E. Sparrow (1983)
SOLUTIONS FOR THE CHANNEL PLUME AND THE PARALLEL-WALLED CHIMNEYNumerical Heat Transfer Part A-applications, 6
A. Andreozzi, B. Buonomo, O. Manca (2005)
NUMERICAL STUDY OF NATURAL CONVECTION IN VERTICAL CHANNELS WITH ADIABATIC EXTENSIONS DOWNSTREAMNumerical Heat Transfer, Part A: Applications, 47
E. Bacharoudis, M. Vrachopoulos, M. Koukou, Dionysios Margaris, A. Filios, Stamatis Mavrommatis (2007)
Study of the natural convection phenomena inside a wall solar chimney with one wall adiabatic and one wall under a heat fluxApplied Thermal Engineering, 27
A. Auletta, O. Manca, B. Morrone, V. Naso (2001)
Heat transfer enhancement by the chimney effect in a vertical isoflux channelInternational Journal of Heat and Mass Transfer, 44
V. Modi, K. Torrance (1987)
Experimental and Numerical Studies of Cold Inflow at the Exit of Buoyant Channel FlowsJournal of Heat Transfer-transactions of The Asme, 109
W. Thrasher, T. Fisher, K. Torrance (2000)
Experiments on Chimney-Enhanced Free Convection From Pin-Fin Heat SinksJournal of Electronic Packaging, 122
W. Rohsenow, J. Hartnett, E. Ganić (1985)
Handbook of Heat Transfer Fundamentals
O. Jörg, R. Scorer (1967)
An experimental study of cold inflow into chimneysAtmospheric Environment, 1
T. Ayinde, S. Said, M. Habib (2005)
Experimental investigation of turbulent natural convection flow in a channelHeat and Mass Transfer, 42
Kuan-Tzong Lee (1994)
NATURAL CONVECTION IN VERTICAL PARALLEL PLATES WITH AN UNHEATED ENTRY OR UN HEATED EXITNumerical Heat Transfer Part A-applications, 25
A. Bejan (2000)
Shape and Structure, from Engineering to Nature
D. Harris, N. Helwig (2007)
Solar chimney and building ventilationApplied Energy, 84
W. Aung (1988)
Cooling Technology for Electronic Equipment
A. Campo, O. Manca, B. Morrone (1999)
NUMERICAL ANALYSIS OF PARTIALLY HEATED VERTICAL PARALLEL PLATES IN NATURAL CONVECTIVE COOLINGNumerical Heat Transfer Part A-applications, 36
J.P. Roache
Computational Fluid Dynamics
V. Modi, F. Moore (1987)
Laminar separation in buoyant channel flowsJournal of Fluid Mechanics, 177
A. Straatman, J. Tarasuk, J. Floryan (1993)
Heat Transfer Enhancement From a Vertical, Isothermal Channel Generated by the Chimney EffectJournal of Heat Transfer-transactions of The Asme, 115
B. Gebhart, Y. Jaluria, R. Mahajan, B. Sammakia, M. Yovanovich (1988)
Buoyancy-Induced Flows and Transport
S. Kazansky, V. Dubovsky, G. Ziskind, R. Letan (2003)
Chimney-enhanced natural convection from a vertical plate: experiments and numerical simulationsInternational Journal of Heat and Mass Transfer, 46
D. Pelletier, P. Roache (2009)
Verification and Validation of Computational Heat Transfer
T. Yilmaz, A. Gilchrist (2007)
Temperature and velocity field characteristics of turbulent natural convection in a vertical parallel-plate channel with asymmetric heatingHeat and Mass Transfer, 43
R. Letan, V. Dubovsky, G. Ziskind (2003)
Passive ventilation and heating by natural convection in a multi-storey buildingBuilding and Environment, 38
T. Yilmaz, S. Fraser (2007)
Turbulent natural convection in a vertical parallel-plate channel with asymmetric heatingInternational Journal of Heat and Mass Transfer, 50
O. Manca, M. Musto, V. Naso
Experimental analysis of chimney effect in a vertical Isoflux channel
T. Fisher, K. Torrance (1999)
Experiments on Chimney-Enhanced Free ConvectionJournal of Heat Transfer-transactions of The Asme, 121
E. Sparrow, G. Chrysler, L. Azevedo (1984)
Observed Flow Reversals and Measured-Predicted Nusselt Numbers for Natural Convection in a One-Sided Heated Vertical ChannelJournal of Heat Transfer-transactions of The Asme, 106
G. Ledezma, A. Bejan (1997)
Optimal Geometric Arrangement of Staggered Vertical Plates in Natural ConvectionJournal of Heat Transfer-transactions of The Asme, 119
Y. Asako, H. Nakamura, M. Faghri (1990)
Natural convection in a vertical heated tube attached to a thermally insulated Chimney of a different diameterJournal of Heat Transfer-transactions of The Asme, 112
F. Moore
Cold inflow and its applications for dry tower design
R. Agarwal, Y. Jaluria (1989)
Deflection of a two-dimensional natural convection wake due to the presence of a vertical surface in close proximityJournal of Fluid Mechanics, 201
A. Andreozzi, B. Buonomo, O. Manca (2009)
Thermal management of a symmetrically heated channel–chimney systemInternational Journal of Thermal Sciences, 48
A. Auletta, O. Manca (2002)
Heat and fluid flow resulting from the chimney effect in a symmetrically heated vertical channel with adiabatic extensionsInternational Journal of Thermal Sciences, 41
O. Manca, B. Morrone, S. Nardini, V. Naso (2000)
Natural Convection in Open Channels, 7
P.H. Oosthuizen
A numerical study of laminar free convective flow through a vertical open partially heated plane duct
O. Manca, M. Musto, V. Naso (2002)
Flow visualization and air temperature measurements in symmetrically heated vertical channels with adiabatic extensions, 1
Purpose – The purpose of this paper is to evaluate the thermal and fluid dynamic behaviors of natural convection in a vertical channel‐chimney system heated symmetrically at uniform heat flux in order to detect the different fluid motion structures inside the chimney, such as the cold inflow from the outlet section of the chimney and the reattachment due to the hot jet from the channel, for different extension and expansion ratios of the adiabatic extensions. Design/methodology/approach – The model is constituted by two‐dimensional steady‐state fully elliptic conservation equations which are solved numerically in a composite three‐part computational domain by means of the finite‐volume method. Findings – Stream function and temperature fields in the system are presented in order to detect the different fluid motion structures inside the chimney, for different extension and expansion ratios of the adiabatic extensions. The analysis allows to evaluate the effect of the channel aspect ratio on the thermal and fluid dynamic behaviors on a channel‐chimney system and thermal and geometrical conditions corresponding to a complete downflow. Guidelines to estimate critical conditions related to the beginning of flow separation and complete downflow are given in terms of order of magnitude of Rayleigh and Froude numbers. Research limitations/implications – The hypotheses on which the present analysis is based are: two‐dimensional, laminar and steady‐state flow, constant thermophysical properties with the Boussinesq approximation. The investigation is carried out in the following ranges: from 100 to 100,000 for the Rayleigh number, from 5.0 to 20 for the aspect ratio, from 1.0 to 4.0 for the expansion ratio and from 1.5 to 4 for the extension ratio. Practical implications – Thermal design of heating systems in different technical fields, such as in electronic cooling and in building ventilation and houses solar components, evaluation of heat convective coefficients and guidelines to estimate critical conditions related to the beginning of flow separation and complete downflow. Originality/value – The paper is useful to thermal designers because of its evaluation of the thermal and velocity fields, correlation for the Nusselt number and guidelines criteria in terms of Rayleigh and Froude numbers to evaluate conditions of flow separation and complete downflow in natural convection in air for vertical channels‐chimney systems.
International Journal of Numerical Methods for Heat and Fluid Flow – Emerald Publishing
Published: Sep 21, 2010
Keywords: Convection; Fluid dynamics; Flow; Thermodynamics
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