Journal
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
Volume 126, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.icheatmasstransfer.2021.105442
Keywords
Free convection; Cubical cavity; Finite difference method; Variable viscosity; Non-uniform wall temperature; Vector potential functions
Categories
Funding
- Russian Science Foundation [17-79-20141]
- Russian Science Foundation [17-79-20141] Funding Source: Russian Science Foundation
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Convective heat transfer is a major phenomenon in different technical and natural systems, especially in enclosures under different temperature distributions at bounded walls. This research addresses the thermogravitation energy transport of a non-constant viscosity medium inside a 3D region with non-uniform or uniform temperature profile at one vertical wall, studying the impacts of Rayleigh number and viscosity changeable magnitude on the energy transference and flow structures. The control equations with border restrictions are reduced into a non-dimensional form and integrated by finite difference procedures.
Convective heat transfer is a major phenomenon in different technical and natural systems. This process can be found in enclosures under the different temperature distributions at bounded walls. In this research, the thermogravitation energy transport of a non-constant viscosity medium inside a 3D region under the non-uniform or uniform temperature profile at one of the vertical walls is addressed. The opposite border is at a low constant temperature, and the remaining borders are well insulated. The control equations with the border restrictions are reduced into a non-dimensional form and then integrated by the finite difference procedures. The control characteristics are the Rayleigh number and viscosity changeable magnitude. The impacts of these characteristics on the energy transference and flow structures are studied.
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