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Laminar plume interactions

Published online by Cambridge University Press:  29 March 2006

Luciano Pera  and
Benjamin Gebhart
Luciano Pera
Affiliation:
FIAT Direzione Ricerca, Turin, Italy
Benjamin Gebhart
Affiliation:
Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, New York 14853
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Abstract

Interactions between laminar thermal natural convection plumes generated by line and concentrated heat sources were experimentally investigated with a Mach-Zehnder interferometer. Adjacent plane plumes were found to interact more strongly than axisymmetric plumes a t the same spacing. These flows with nominally free boundaries were also found to be affected by nearby surfaces which interfered with the supply of entrainment fluid. Several types of interference with plume entrainment were investigated. The nature of the interacting flows suggests a model which is successful in interpreting the mechanism. An application of the effects of plume interaction is discussed.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 68 , Issue 2 , 25 March 1975 , pp. 259 - 271
Copyright
© 1975 Cambridge University Press

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References

Bourques, C. & Newman, B. G. 1960 Reattachment of a two-dimensional incompressible jet to an adjacent flat plate. Aero. Quart. 11, 201–232.Google Scholar
Gebhart, B., Pera, L. & Schorr, A. W. 1970 Steady laminar natural convection plumes above a horizontal line heat source. Int. J. Heat Mass Transfer, 13, 161–171.Google Scholar
Korbacher, G. K. 1962 The Coanda effect at deflection surfaces detached from the jet nozzle. Can. Aero. Space J. 8, 1–6.Google Scholar
Lieberdian, J. & Gebhart, B. 1969 Interactions in natural convection from an array of heated elements, experimental. Int. J. Heat Mass Transfer, 12, 1385–1396.Google Scholar
Miller, D. R. & Comings, E. W. 1960 Force-momentum fields in a dual-jet flow. J. Fluid Mech. 7, 237–256.Google Scholar
Pera, L. & Gebhart, B. 1971 On the stability of laminar plumes: some numerical solutions and experiments. Int. J. Heat Mass Transfer, 14, 975–984.Google Scholar
Pera, L. & Gebhart, B. 1972 Experimental observations of wake formation over cylindrical surface in natural convection flow. Int. J. Heat Mass Transfer, 15, 175–177.Google Scholar
Pera, L. & Gebhart, B. 1973 On the stability of natural convection boundary layer flow over horizontal and slightly inclined surfaces. Int. J. Heat Mass Transfer, 16, 1147–1163.Google Scholar
Reba, I. 1966 Applications of the Coanda effect. Sci. Am. 14, 84–92.Google Scholar
Sawyer, R. A. 1963 Two-dimensional reattaching jet flows including the effects of curvature on entrainment. J. Fluid Mech. 17, 481–498.Google Scholar
Schorr, A. W. & Gebhart, B. 1970 An experimental investigation of natural convection wakes above'a line heat source. Int. J. Heat Mass Transfer, 13, 557–571.Google Scholar
YIH, C. S. 1952 Free convection due to a point source of heat. Proc. 1st U.S. Nat. Cong. Appl. Mech., pp. 941–947.Google Scholar