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Thermal Bubble Motion in Liquid Nitrogen under Non-Uniform Electric Fields

Thermal Bubble Motion in Liquid Nitrogen under Non-Uniform Electric Fields
Thermal Bubble Motion in Liquid Nitrogen under Non-Uniform Electric Fields
This paper describes an experimental study of the influence of a non-uniform electric field on bubble motion and behaviour in liquid nitrogen. The electric field effect on the bubble motion as it rises to buoyancy within applied dc electric fields is quantitatively investigated using a rod-plane gap. Thermal bubble motion and bubble collision with the plane electrode processes were observed in these experiments. The experimental results show that dc non-uniform electric fields have an obvious effect on bubble behaviour; bubbles move closer to the plane electrode away from a higher field region to a lower one, irrespective of field direction. Furthermore, the bubble dynamic mechanism has been analysed and explained. Results show that the gradient force greatly affects the dynamics of bubbles in the gap. In addition a set of differential equations which describe the motion of a spherical bubble in the rod-plane gap with voltage are given and solved numerically to determine bubble trajectory in liquid nitrogen. Compared to the experiment, the theoretical results show a satisfactory agreement.
978-961-6688-00-0
CD-ROM
Wang, P
9cbcc0c1-a742-4b52-94ec-58632717c9ed
Swaffield, D J
31f6f52e-fb48-44f9-99d3-3cbd2539f1b9
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819
Wang, P
9cbcc0c1-a742-4b52-94ec-58632717c9ed
Swaffield, D J
31f6f52e-fb48-44f9-99d3-3cbd2539f1b9
Lewin, P L
78b4fc49-1cb3-4db9-ba90-3ae70c0f639e
Chen, G
3de45a9c-6c9a-4bcb-90c3-d7e26be21819

Wang, P, Swaffield, D J, Lewin, P L and Chen, G (2007) Thermal Bubble Motion in Liquid Nitrogen under Non-Uniform Electric Fields. 15th International Symposium on High Voltage Engineering, Ljubjana, Slovenia. 26 - 30 Aug 2007. CD-ROM .

Record type: Conference or Workshop Item (Paper)

Abstract

This paper describes an experimental study of the influence of a non-uniform electric field on bubble motion and behaviour in liquid nitrogen. The electric field effect on the bubble motion as it rises to buoyancy within applied dc electric fields is quantitatively investigated using a rod-plane gap. Thermal bubble motion and bubble collision with the plane electrode processes were observed in these experiments. The experimental results show that dc non-uniform electric fields have an obvious effect on bubble behaviour; bubbles move closer to the plane electrode away from a higher field region to a lower one, irrespective of field direction. Furthermore, the bubble dynamic mechanism has been analysed and explained. Results show that the gradient force greatly affects the dynamics of bubbles in the gap. In addition a set of differential equations which describe the motion of a spherical bubble in the rod-plane gap with voltage are given and solved numerically to determine bubble trajectory in liquid nitrogen. Compared to the experiment, the theoretical results show a satisfactory agreement.

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More information

Published date: 2007
Additional Information: Event Dates: 27-31 August
Venue - Dates: 15th International Symposium on High Voltage Engineering, Ljubjana, Slovenia, 2007-08-26 - 2007-08-30
Organisations: Electronics & Computer Science, EEE

Identifiers

Local EPrints ID: 264447
URI: http://eprints.soton.ac.uk/id/eprint/264447
ISBN: 978-961-6688-00-0
PURE UUID: d4ea93b3-7e5c-42d7-8086-4f2f58b5d686

Catalogue record

Date deposited: 03 Sep 2007
Last modified: 23 Sep 2020 16:47

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Contributors

Author: P Wang
Author: D J Swaffield
Author: P L Lewin
Author: G Chen

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