Evaluation of mixing energy in the swirling and baffled flasks

V. J. Kaku; M. C. Boufadel; A. D. Venosa

Evaluation of mixing energy in the swirling and baffled flasks

V. J. Kaku, M. C. Boufadel, A. D. Venosa

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A USEPA laboratory screening protocol for dispersants effectiveness consists of placing water, oil, and dispersants in a flask placed on an orbital shaker. Two flasks are being investigated, the Swirling Flask and the Baffled Flask. The BF contains baffles that induce an over-and-under type of mixing that somewhat better simulates breaking waves. We use hot-wire anemometer to measure the velocity distributions in both flasks rotating at a speed of 150 rpm. The measurements were conducted in small portions near the centers of the flasks. We found that the average velocity in the BF was about 5 times larger than that in the BF. The velocity in the BF was essentially uniform with depth, while that in the SW decreased sharply with depth. The computed energy dissipation rates per unit integral length scale were about 0.03 and 0.92 in the SF and the BF, respectively.

Original language	English (US)
Title of host publication	Oil and Gas Hydrocarbon Spills III
Subtitle of host publication	Modelling, Analysis and Control
Editors	C.A. Brebbia
Publisher	WITPress
Pages	211-218
Number of pages	8
Volume	11
ISBN (Print)	1853128147
State	Published - 2002
Externally published	Yes
Event	First International Conference on Oil and Hydrocarbon Spills: Modelling, Analysis and Control, Oil Spill III - Rhodes, Greece Duration: Sep 17 2002 → Sep 19 2002

Other

Other	First International Conference on Oil and Hydrocarbon Spills: Modelling, Analysis and Control, Oil Spill III
Country/Territory	Greece
City	Rhodes
Period	9/17/02 → 9/19/02

All Science Journal Classification (ASJC) codes

General Engineering

Cite this

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title = "Evaluation of mixing energy in the swirling and baffled flasks",

abstract = "A USEPA laboratory screening protocol for dispersants effectiveness consists of placing water, oil, and dispersants in a flask placed on an orbital shaker. Two flasks are being investigated, the Swirling Flask and the Baffled Flask. The BF contains baffles that induce an over-and-under type of mixing that somewhat better simulates breaking waves. We use hot-wire anemometer to measure the velocity distributions in both flasks rotating at a speed of 150 rpm. The measurements were conducted in small portions near the centers of the flasks. We found that the average velocity in the BF was about 5 times larger than that in the BF. The velocity in the BF was essentially uniform with depth, while that in the SW decreased sharply with depth. The computed energy dissipation rates per unit integral length scale were about 0.03 and 0.92 in the SF and the BF, respectively.",

author = "Kaku, {V. J.} and Boufadel, {M. C.} and Venosa, {A. D.}",

year = "2002",

language = "English (US)",

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pages = "211--218",

editor = "C.A. Brebbia",

booktitle = "Oil and Gas Hydrocarbon Spills III",

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note = "First International Conference on Oil and Hydrocarbon Spills: Modelling, Analysis and Control, Oil Spill III ; Conference date: 17-09-2002 Through 19-09-2002",

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AU - Kaku, V. J.

AU - Boufadel, M. C.

AU - Venosa, A. D.

PY - 2002

Y1 - 2002

N2 - A USEPA laboratory screening protocol for dispersants effectiveness consists of placing water, oil, and dispersants in a flask placed on an orbital shaker. Two flasks are being investigated, the Swirling Flask and the Baffled Flask. The BF contains baffles that induce an over-and-under type of mixing that somewhat better simulates breaking waves. We use hot-wire anemometer to measure the velocity distributions in both flasks rotating at a speed of 150 rpm. The measurements were conducted in small portions near the centers of the flasks. We found that the average velocity in the BF was about 5 times larger than that in the BF. The velocity in the BF was essentially uniform with depth, while that in the SW decreased sharply with depth. The computed energy dissipation rates per unit integral length scale were about 0.03 and 0.92 in the SF and the BF, respectively.

AB - A USEPA laboratory screening protocol for dispersants effectiveness consists of placing water, oil, and dispersants in a flask placed on an orbital shaker. Two flasks are being investigated, the Swirling Flask and the Baffled Flask. The BF contains baffles that induce an over-and-under type of mixing that somewhat better simulates breaking waves. We use hot-wire anemometer to measure the velocity distributions in both flasks rotating at a speed of 150 rpm. The measurements were conducted in small portions near the centers of the flasks. We found that the average velocity in the BF was about 5 times larger than that in the BF. The velocity in the BF was essentially uniform with depth, while that in the SW decreased sharply with depth. The computed energy dissipation rates per unit integral length scale were about 0.03 and 0.92 in the SF and the BF, respectively.

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BT - Oil and Gas Hydrocarbon Spills III

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PB - WITPress

T2 - First International Conference on Oil and Hydrocarbon Spills: Modelling, Analysis and Control, Oil Spill III

Y2 - 17 September 2002 through 19 September 2002

ER -

Evaluation of mixing energy in the swirling and baffled flasks

Abstract

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All Science Journal Classification (ASJC) codes

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