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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.9

ISSN Print: 2152-5102
ISSN Online: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v25.i4-6.90
pages 546-555

Natural Convection in Square Enclosure with an Internal Isolated Horizontal Plate

Qiu-Wang Wang
Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R. China
Wen-Quan Tao
State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science & Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xian Jiaotong University, Xian 710049, China

ABSTRACT

In this paper, the natural convection in an enclosure with an internal isolated horizontal plate was numerically investigated. The fluid filled in the enclosure was air. It has been found that for a fixed plate position, the plate average Nusselt number increases with increase in Rayleigh number, and at a fixed Rayleigh number, there is a certain plate position for which the plate Nusselt number reaches its maximum. The flow pattern was also revealed by smoking technique and the agreement between the predicted streamlines and the flow visualization results is very good.


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