Effects of surface radiation on turbulent free convection in an open-ended cavity

Journal Article · · International Communications in Heat and Mass Transfer; (United States)

OSTI ID:5444292

Lin, Chengxian; Ko, Shaoyen ^[1]; Xin, Mingdao ^[2]

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1. Chinese Academy of Sciences, Beijing (China). Inst. of Engineering Thermophysics
2. Chongqing Univ. (China). Inst. of Engineering Thermophysics

A numerical study is carried out for the steady turbulent free convection in a two-dimensional open square cavity with and without surface radiation. The flow medium is air, and the used turbulence model is the Low-Reynolds-Number [kappa]-[epsilon] scheme taking into account the buoyancy and variable property effects. The velocity, temperature and turbulent kinetic energy fields, the averaged Nusselt numbers and the radiation portion in combined heat transfer at different overheat ratios and Raleigh numbers are presented and discussed to demonstrate the radiation effects on the turbulent flow and heat transfer characteristics.

• OSTI ID: 5444292
• Journal Information: International Communications in Heat and Mass Transfer; (United States), Journal Name: International Communications in Heat and Mass Transfer; (United States) Vol. 21:1; ISSN 0735-1933; ISSN IHMTDL
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CAVITIES
CONFIGURATION
CONVECTION
ENERGY TRANSFER
FLUID FLOW
HEAT TRANSFER
MASS TRANSFER
NATURAL CONVECTION
RADIANT HEAT TRANSFER
RECTANGULAR CONFIGURATION
SQUARE CONFIGURATION
TURBULENT FLOW