A numerical study of the interacting natural convection flows generated by isolated thermal energy sources, such as electronic components, located on a vertical adiabatic surface is carried out. Of particular interest were the effects of the wake on the heat transfer from and the flow over a downstream heat source and the nature of the wall plume far from the sources. This consideration is related to the positioning of finite-sized electronic components and the relevant heat removal process. A two-dimensional flow is considered, without making the boundary-layer assumptions. The full elliptic equations governing the flow are solved numerically, employing finite-difference methods. The results are compared with the boundary layer solutions, obtained in earlier studies, in order to determine the nonboundary-layer effects. This is an important consideration in several practical circumstances that involve small heat inputs, sources of relatively small heights, and small separation distances between the sources. It is found that the flow downstream rapidly approaches the characteristics of an idealized wall plume due to a line source. A boundary-layer flow arises far from the heat sources and this flow provides the boundary conditions for the elliptic problem. The nature of the velocity and temperature fields is studied in detail for a wide range of governing parameters and the heat transfer coefficients for the heated elements determined. The relevance of the results obtained to practical systems is outlined, particularly for small Grashof numbers which necessitate a solution of the full equations.
Skip Nav Destination
Article navigation
Research Papers
Interaction of Natural Convection Wakes Arising From Thermal Sources on a Vertical Surface
Y. Jaluria
Y. Jaluria
Mechanical and Aerospace Engineering Department, Rutgers University, New Brunswick, NJ 08903
Search for other works by this author on:
Y. Jaluria
Mechanical and Aerospace Engineering Department, Rutgers University, New Brunswick, NJ 08903
J. Heat Transfer. Nov 1985, 107(4): 883-892 (10 pages)
Published Online: November 1, 1985
Article history
Received:
May 9, 1984
Online:
October 20, 2009
Citation
Jaluria, Y. (November 1, 1985). "Interaction of Natural Convection Wakes Arising From Thermal Sources on a Vertical Surface." ASME. J. Heat Transfer. November 1985; 107(4): 883–892. https://doi.org/10.1115/1.3247517
Download citation file:
Get Email Alerts
Cited By
Estimation of thermal emission from mixture of CO2 and H2O gases and fly-ash particles
J. Heat Mass Transfer
Non-Classical Heat Transfer and Recent Progress
J. Heat Mass Transfer
Related Articles
Onset and Development of Natural Convection Above a Suddenly Heated Horizontal Surface
J. Heat Transfer (November,1995)
Transient Natural Convection From a Leadless Chip Carrier in a Liquid Filled Enclosure: A Numerical Study
J. Electron. Packag (September,1992)
Buoyancy Effects on a Boundary Layer Along an Infinite Cylinder With a Step Change of Surface Temperature
J. Heat Transfer (February,1983)
Two-Dimensional Free Convection Heat Transfer Below a Horizontal Hot Isothermal Flat Strip
J. Heat Transfer (May,2015)
Related Chapters
Human Thermal Comfort
Electromagnetic Waves and Heat Transfer: Sensitivites to Governing Variables in Everyday Life
Thermoelectric Coolers
Thermal Management of Microelectronic Equipment