Mechanism of air entrainment by an impinging liquid jet

Y. Zhu; H. N. Oguz; A. Prosperetti

Mechanism of air entrainment by an impinging liquid jet

Y. Zhu^*
, H. N. Oguz
, A. Prosperetti

^*Corresponding author for this work

Johns Hopkins University

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

2 Scopus citations

Abstract

The process of air entrainment induced by a liquid jet plunging into a mass of relatively quiescent liquid is studied both experimentally and numerically. The experiments show that a smooth jet does not entrap air even at relatively high velocities. When surface disturbances are generated on the jet by a rapid temporary increase of the liquid flow rate, large air cavities are formed. Their collapse under the action of gravity causes the entrapment of bubbles in the liquid. This sequence of events is recorded with a CCD and a high-speed video camera. Analysis of the images of the underwater air cavity indicates that the volume of air entrapped in the liquid is a linear function of the jet disturbance size. Numerical simulations using a boundary integral method support the experimental observations.

Original language	English
Title of host publication	Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998
Editors	MC Thompson, K Hourigan, MC Thompson, K Hourigan
Publisher	Monash University
Pages	337-340
Number of pages	4
ISBN (Print)	0732620449
State	Published - 1998
Externally published	Yes
Event	Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference - Clayton, Victora, Australia Duration: 13 Dec 1998 → 18 Dec 1998

Conference

Conference	Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference
Country/Territory	Australia
City	Clayton, Victora
Period	13/12/98 → 18/12/98

Cite this

@inproceedings{9975578f0ede4a88888faca5028e38de,

title = "Mechanism of air entrainment by an impinging liquid jet",

abstract = "The process of air entrainment induced by a liquid jet plunging into a mass of relatively quiescent liquid is studied both experimentally and numerically. The experiments show that a smooth jet does not entrap air even at relatively high velocities. When surface disturbances are generated on the jet by a rapid temporary increase of the liquid flow rate, large air cavities are formed. Their collapse under the action of gravity causes the entrapment of bubbles in the liquid. This sequence of events is recorded with a CCD and a high-speed video camera. Analysis of the images of the underwater air cavity indicates that the volume of air entrapped in the liquid is a linear function of the jet disturbance size. Numerical simulations using a boundary integral method support the experimental observations.",

author = "Y. Zhu and Oguz, \{H. N.\} and A. Prosperetti",

year = "1998",

language = "英语",

isbn = "0732620449",

pages = "337--340",

editor = "MC Thompson and K Hourigan and MC Thompson and K Hourigan",

booktitle = "Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998",

publisher = "Monash University",

note = "Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference ; Conference date: 13-12-1998 Through 18-12-1998",

}

Zhu, Y, Oguz, HN & Prosperetti, A 1998, Mechanism of air entrainment by an impinging liquid jet. in MC Thompson, K Hourigan, MC Thompson & K Hourigan (eds), Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998. Monash University, pp. 337-340, Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Clayton, Victora, Australia, 13/12/98.

Mechanism of air entrainment by an impinging liquid jet. / Zhu, Y.; Oguz, H. N.; Prosperetti, A.
Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998. ed. / MC Thompson; K Hourigan; MC Thompson; K Hourigan. Monash University, 1998. p. 337-340.

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

TY - GEN

T1 - Mechanism of air entrainment by an impinging liquid jet

AU - Zhu, Y.

AU - Oguz, H. N.

AU - Prosperetti, A.

PY - 1998

Y1 - 1998

N2 - The process of air entrainment induced by a liquid jet plunging into a mass of relatively quiescent liquid is studied both experimentally and numerically. The experiments show that a smooth jet does not entrap air even at relatively high velocities. When surface disturbances are generated on the jet by a rapid temporary increase of the liquid flow rate, large air cavities are formed. Their collapse under the action of gravity causes the entrapment of bubbles in the liquid. This sequence of events is recorded with a CCD and a high-speed video camera. Analysis of the images of the underwater air cavity indicates that the volume of air entrapped in the liquid is a linear function of the jet disturbance size. Numerical simulations using a boundary integral method support the experimental observations.

AB - The process of air entrainment induced by a liquid jet plunging into a mass of relatively quiescent liquid is studied both experimentally and numerically. The experiments show that a smooth jet does not entrap air even at relatively high velocities. When surface disturbances are generated on the jet by a rapid temporary increase of the liquid flow rate, large air cavities are formed. Their collapse under the action of gravity causes the entrapment of bubbles in the liquid. This sequence of events is recorded with a CCD and a high-speed video camera. Analysis of the images of the underwater air cavity indicates that the volume of air entrapped in the liquid is a linear function of the jet disturbance size. Numerical simulations using a boundary integral method support the experimental observations.

UR - https://www.scopus.com/pages/publications/0032232123

M3 - 会议稿件

AN - SCOPUS:0032232123

SN - 0732620449

SP - 337

EP - 340

BT - Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998

A2 - Thompson, MC

A2 - Hourigan, K

A2 - Thompson, MC

A2 - Hourigan, K

PB - Monash University

T2 - Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference

Y2 - 13 December 1998 through 18 December 1998

ER -

Mechanism of air entrainment by an impinging liquid jet

Abstract

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