Analysis of radiation-induced natural convection in rectangular enclosures

Journal Article · Wed Apr 01 04:00:00 EST 1987 · J. Thermophy. Heat Transfer; (United States)

DOI:https://doi.org/10.2514/3.18· OSTI ID:6409566

Webb, B W; Viskanta, R

A model has been developed for predicting the volumetric deposition rate of radiant energy from an external source in a vertical fluid layer and the subsequent buoyancy-driven flow and heat transfer. The model calls for solution of the coupled two-dimensional equations of continuity, momentum, and energy with a one-dimensional radiative transfer model. After experimental validation of the model, parametric calculations were performed to determine the effect of the modified Rayleigh number, fluid Prandtl number, fluid layer opacity, cavity aspect ratio, opaque wall reflectivity, and convective heat loss from the transmitting wall. Natural convective motion and heat transfer are quite different from that found in cavities with differentially heated side walls. Results are presented in the form of temperature distributions, local heat transfer, contours of the stream function, and profiles of the predicted radiative flux divergence. 20 references.

• Research Organization: Purdue Univ., West Lafayette, IN
• OSTI ID: 6409566
• Journal Information: J. Thermophy. Heat Transfer; (United States), Journal Name: J. Thermophy. Heat Transfer; (United States) Vol. 1; ISSN JTHTE
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CAVITIES
CONVECTION
ENERGY TRANSFER
FLUID FLOW
HEAT TRANSFER
LAMINAR FLOW
MASS TRANSFER
MATHEMATICAL MODELS
NATURAL CONVECTION
PARAMETRIC ANALYSIS
PRANDTL NUMBER
RADIATION EFFECTS
RADIATION TRANSPORT
STEADY FLOW