Buoyancy-induced flow due to isolated thermal sources on a vertical surface

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The natural convection flow due to multiple isolated heated elements located on a vertical adiabatic surface has been studied analytically. The problem, which is of particular relevance to electronic circuitry cooling and to the question of locating sources in manufacturing systems, is considered for a Prandtl number of 0.7, which applies for air. Of particular interest were the temperature and velocity fields that arise and the dependence of these on the heat input and on the distance between the heated elements. The flow is treated as a boundary layer problem and the governing equations are solved numerically. The results obtained indicate the general nature of the flow and the dependence of the heat-transfer coefficient for an element, located in the wake of another, on the energy input and location. The downstream variation of the surface temperature, the velocity level, and the resulting velocity and temperature profiles are studied in detail. The results obtained are also compared with those for a single source, bringing out several interesting features.

Original languageEnglish (US)
Pages (from-to)223-227
Number of pages5
JournalJournal of Heat Transfer
Volume104
Issue number2
DOIs
StatePublished - May 1982

Fingerprint

Buoyancy
buoyancy
velocity distribution
Electronic cooling
Prandtl number
heat transfer coefficients
Natural convection
free convection
wakes
temperature profiles
Temperature
Heat transfer coefficients
surface temperature
boundary layers
Boundary layers
temperature distribution
manufacturing
cooling
heat
air

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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abstract = "The natural convection flow due to multiple isolated heated elements located on a vertical adiabatic surface has been studied analytically. The problem, which is of particular relevance to electronic circuitry cooling and to the question of locating sources in manufacturing systems, is considered for a Prandtl number of 0.7, which applies for air. Of particular interest were the temperature and velocity fields that arise and the dependence of these on the heat input and on the distance between the heated elements. The flow is treated as a boundary layer problem and the governing equations are solved numerically. The results obtained indicate the general nature of the flow and the dependence of the heat-transfer coefficient for an element, located in the wake of another, on the energy input and location. The downstream variation of the surface temperature, the velocity level, and the resulting velocity and temperature profiles are studied in detail. The results obtained are also compared with those for a single source, bringing out several interesting features.",
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Buoyancy-induced flow due to isolated thermal sources on a vertical surface. / Jaluria, Y.

In: Journal of Heat Transfer, Vol. 104, No. 2, 05.1982, p. 223-227.

Research output: Contribution to journalArticle

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