Combined heat transfer of radiation and natural convection in a square cavity containing participating gases

Lari, Khosro; Baneshi, Mehdi; Nassab, S. A. Gandjalikhan; Komiya, Atsuki; Maruyama, Shigenao

doi:10.1016/j.ijheatmasstransfer.2011.07.026

Cited by 97 publications

(43 citation statements)

References 24 publications

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“…In view of a variety of shapes and thermal conditions of these devices the obstructions are considered in the form of partitions, partial baffles and discrete bodies and are assumed to be either isothermal or iso-flux or heat generating. Among the various known cooling techniques used in such applications, natural convection cooling using air as the medium is the most widely used one as it is simple to design, cheap, noise free and highly reliable [1][2][3][4][5][6][7][8][9][10][11][12][13]. For example, Sharma et al [9] studied the interaction of turbulent natural convection and surface thermal radiation in inclined square enclosures.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of a Corrugated Heat Source Cavity: A Full Convection-Conduction-Radiation Coupling

Sadripour¹

2017

AJAE

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Abstract:In present study a numerical analysis of complex heat transfer (turbulent natural convection, conduction and surface thermal radiation) in a rectangular enclosure with a heat source has been carried out. The finite volume method based on SIMPLEC algorithm has been utilized. The effects of Rayleigh number in a range from 10 8 to 10 11 , internal surface emissivity 0≤ε˂1 on the fluid flow and heat transfer have been extensively explored. Detailed results including temperature fields, flow profiles, and average Nusselt numbers have been presented. In this investigation it has been tried to study the shape of heat source influence on heat transfer and fluid field in the considered domain. According to results in low emissivity values usage of circular obstacles is recommended. Although in high emissivity values using rectangular obstacles lead to more efficiency.

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Section: Introductionmentioning

confidence: 99%

Numerical Investigation of a Corrugated Heat Source Cavity: A Full Convection-Conduction-Radiation Coupling

Sadripour¹

2017

AJAE

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“…Thus, for instance, the processes of free convection and thermal conductivity in the rectangular regions without the local sources of the heat emission and heat sink into the walls [1,2], with the local heat emission sources [3][4][5], in the conjugate formulation [6][7][8], with radiation heat transfer [9,10], different position of the heat sources [11][12][13], different boundary conditions on the solid walls [14], the radiation source of heating transparent air medium inside the closed cavity [15], cooling the microelectronics devices [16], turbulent regimes [17] of natural convection are investigated. The enumerated solutions compose only small part of the large number of publications according to the class of problems.…”

Section: Introductionmentioning

confidence: 99%

Conjugate Heat Transfer in a Closed Volume with the Local Heat Sources and Non-Uniform Heat Dissipation on the Boundaries of Heat Conducting Walls

Maksimov

Nagornova

Glazyrin

2016

EPJ Web of Conferences

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Abstract. Is solved the problem of heat transfer in the closed volume, limited by heatconducting walls, with the local source of heat emission and the heterogeneous conditions of heat sink on the outer boundaries of solution area. The problem of convective heat transfer is solved with using a system of differential Navier-Stokes equations in the Boussinesq approximation. The simulation of turbulent flow conditions of heated air is carried out within the framework to k-H model. On the basis the analysis of the obtained temperature field and the contour lines of stream functions is made conclusion about the essential transiency of the process in question. The obtained values of temperatures and speeds in different sections of region illustrate turbulence of the process. Are investigated laws governing the formation of temperature fields in closed areas with a local heat emission source under the conditions of intensive local heat sink into environment and accumulation of heat in the enclosing constructions.

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“…A large part of research is devoted to the processes of heat transfer without regard to the heat sink in the building envelope (eg [1][2][3]). To the tasks of Conjugate heat transfer is given much less attention (for example 4,5) due to the problems of energy equations solution in the area with discontinuities transfer coefficient.…”

Section: Introductionmentioning

confidence: 99%

Verification of Conjugate Heat Transfer Models in a Closed Volume with Radiative Heat Source

2016

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Abstract.The results of verification of mathematical model of convective-conductive heat transfer in a closed volume with a thermally conductive enclosing structures are presented. Experiments were carried out to determine the temperature of floor premises in the working conditions of radiant heating systems. Comparison of mathematical modelling of temperature fields and experiments showed their good agreement. It is concluded that the mathematical model of conjugate heat transfers in the air cavity with a heat-conducting and heat-retaining walls correspond to the real process of formation of temperature fields in premises with gas infrared heaters system.

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Combined heat transfer of radiation and natural convection in a square cavity containing participating gases

Cited by 97 publications

References 24 publications

Numerical Investigation of a Corrugated Heat Source Cavity: A Full Convection-Conduction-Radiation Coupling

Numerical Investigation of a Corrugated Heat Source Cavity: A Full Convection-Conduction-Radiation Coupling

Conjugate Heat Transfer in a Closed Volume with the Local Heat Sources and Non-Uniform Heat Dissipation on the Boundaries of Heat Conducting Walls

Verification of Conjugate Heat Transfer Models in a Closed Volume with Radiative Heat Source

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