An experimental study of starting plumes over area sources

Friedl, M.J. and Haertel, C. and Fannelop, T.K. (1999) An experimental study of starting plumes over area sources. Il nuovo cimento C, 22 C (6). pp. 835-846. ISSN 1826-9885

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Experiments have been performed to study the dynamics of plumes which develop, if buoyant fluid enters a homogeneous, unstratified environment through a source of finite width. The experiments were conducted in a cubic tank of salt water with 0.8m side length into which dyed fresh water was released at a constant volume-flow rate through a circular felt at the bottom. The governing non-dimensional parameter of the flow, namely the ratio of inflow velocity to buoyancy velocity, was varied over more than two orders of magnitude in the experiments. The flow is shown to pass through two distinct phases, and a new integral model is presented which describes the flow in the early stage. For later times and at larger distances from the source, the flow is found to be well described by Turner’s model for starting plumes from point sources.

Item Type: Article
Additional Information: Paper presented at the International Workshop on “Vortex Dynamics in Geophysical Flows”, Castro Marina (LE), Italy, 22-26 June 1998.
Uncontrolled Keywords: Turbulence and diffusion ; Buoyancy-driven instability ; Stratified flows ; Conference proceedings
Subjects: 500 Scienze naturali e Matematica > 550 Scienze della Terra
Depositing User: Marina Spanti
Date Deposited: 11 Oct 2019 14:59
Last Modified: 11 Oct 2019 14:59

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