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ICHMT DIGITAL LIBRARY ONLINE

ISSN 961-91393-0-5

Individual price:

$246.00 (Must be sent to your home address)

You can order single issue or individual article. To purchase a single issue or an individual article as well as to view tables of contents and abstracts click on issue number.

Institutional price:

$518.00

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For Online Access

Year 2005

• 18th Australasian Heat and Mass Transfer Conference
Curtin University of Technology, Perth, Western Australia, 26-29 July 2005

239 pages

Volume price - $518.00

Submerged Fountains Impinging on a Smooth Horizontal Surface

Charles J. Lemckert
School of Engineering, Griffith University, Southport, Queensland, 4215, Australia

ABSTRACT

Fountains flows (also known as negatively buoyant jets) develop when a light fluid is injected vertically downwards into a denser miscible ambient. Experiments were performed to examine the radius of these submerged circular vertical fountains when they impinged on a smooth horizontal surface. It was observed that when the core of the fountain impacted on the surface it deflected and spread radially along the surface before the influence of negative buoyancy caused it to detach from the surface and flow back around the core as a buoyant annular plume. The outer radius of the outer fountain was found to be a function of the source Froude number and the dimensionless ratio of the source to nozzle distance and the source radius, but not a function of the distance from the source. The core radius was found to increase with distance from the source virtual origin.