Convective heat transfer with buoyancy effects from thermal sources on a flat plate
Abstract
An experimental study is carried out on the thermal interaction between two finite-size heat sources, located on a flat plate that is well insulated on the back. Both the horizontal and the vertical orientations of the surface are studied by measuring the flow velocities, the temperature field, and the local heat flux. The investigation is directed at the pure natural convection circumstance (no forced flow velocity) and the buoyancy-dominated mixed-convection circumstance (presence of a relatively small forced flow velocity). Large temperature gradients occur in the vicinity of the heat sources, resulting in a substantial diffusion of heat along the plate length. However, the effect of conduction is found to be highly localized. The orientation of the surface has a very strong effect on the interaction of the wakes from the heat sources for the circumstances considered. An upstream source is found to have a very strong influence on the temperature of a downstream source in the vertical surface orientation but has a much weaker influence in the horizontal orientation. In the latter circumstance the presence of a small forced flow velocity may actually increase the temperature of a downstream source by tilting the wake from the upstream source toward themore »
- Authors:
-
- Rutgers University, New Brunswick, NJ (USA)
- Publication Date:
- OSTI Identifier:
- 5235598
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Thermophysics and Heat Transfer; (United States)
- Additional Journal Information:
- Journal Volume: 5; Journal ID: ISSN 0887-8722
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; HEAT SOURCES; CONVECTION; DIFFUSION; EXPERIMENTAL DATA; HEAT FLUX; HEAT TRANSFER; NATURAL CONVECTION; TEMPERATURE DISTRIBUTION; TEMPERATURE GRADIENTS; THERMAL INSULATION; DATA; ENERGY TRANSFER; INFORMATION; MASS TRANSFER; NUMERICAL DATA; 420400* - Engineering- Heat Transfer & Fluid Flow
Citation Formats
Tewari, S S, and Jaluria, Y. Convective heat transfer with buoyancy effects from thermal sources on a flat plate. United States: N. p., 1991.
Web. doi:10.2514/3.248.
Tewari, S S, & Jaluria, Y. Convective heat transfer with buoyancy effects from thermal sources on a flat plate. United States. https://doi.org/10.2514/3.248
Tewari, S S, and Jaluria, Y. 1991.
"Convective heat transfer with buoyancy effects from thermal sources on a flat plate". United States. https://doi.org/10.2514/3.248.
@article{osti_5235598,
title = {Convective heat transfer with buoyancy effects from thermal sources on a flat plate},
author = {Tewari, S S and Jaluria, Y},
abstractNote = {An experimental study is carried out on the thermal interaction between two finite-size heat sources, located on a flat plate that is well insulated on the back. Both the horizontal and the vertical orientations of the surface are studied by measuring the flow velocities, the temperature field, and the local heat flux. The investigation is directed at the pure natural convection circumstance (no forced flow velocity) and the buoyancy-dominated mixed-convection circumstance (presence of a relatively small forced flow velocity). Large temperature gradients occur in the vicinity of the heat sources, resulting in a substantial diffusion of heat along the plate length. However, the effect of conduction is found to be highly localized. The orientation of the surface has a very strong effect on the interaction of the wakes from the heat sources for the circumstances considered. An upstream source is found to have a very strong influence on the temperature of a downstream source in the vertical surface orientation but has a much weaker influence in the horizontal orientation. In the latter circumstance the presence of a small forced flow velocity may actually increase the temperature of a downstream source by tilting the wake from the upstream source toward the downstream source. 25 refs.},
doi = {10.2514/3.248},
url = {https://www.osti.gov/biblio/5235598},
journal = {Journal of Thermophysics and Heat Transfer; (United States)},
issn = {0887-8722},
number = ,
volume = 5,
place = {United States},
year = {Sat Jun 01 00:00:00 EDT 1991},
month = {Sat Jun 01 00:00:00 EDT 1991}
}