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Numerical simulations of a line plume impinging on a ceiling in cold fresh water

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journal contribution
posted on 30.01.2017, 14:32 by Alabodite M. George, Anthony Kay
Laminar plumes from a line source of warm water at the base of a shallow, homogeneous body of cold water (below the temperature of maximum density) were simulated by a computational model. The plume water undergoes buoyancy reversal as it mixes with the cold ambient. If this occurs before the plume has reached the ceiling of the domain, the plume flaps from side to side. Otherwise, it spreads along the ceiling and then sinks, with a vortex enclosed between the rising plume and the sinking flow. Some of the dense, mixed water from the sinking flow is re-entrained into the rising plume, while the rest flows outwards along the floor. However, with high source temperatures, a sufficient volume of warm water eventually builds up to also form a positively buoyant gravity current along the ceiling.

Funding

AMG gratefully acknowledges the funding for his PhD studies (of which this work forms part) provided by Niger Delta University, Bayelsa State, Nigeria.

History

School

  • Science

Department

  • Mathematical Sciences

Published in

International Journal of Heat and Mass Transfer

Volume

108

Pages

1364 - 1373 (10)

Citation

GEORGE, A.M. and KAY, A., 2017. Numerical simulations of a line plume impinging on a ceiling in cold fresh water. International Journal of Heat and Mass Transfer, 108, part B pp. 1364-1373.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

05/01/2017

Publication date

2017

Notes

This paper was published in the journal International Journal of Heat and Mass Transfer and the definitive published version is available at http://dx.doi.org/10.1016/j.ijheatmasstransfer.2017.01.016.

Language

en

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