Detailed Information

Cited 5 time in webofscience Cited 5 time in scopus
Metadata Downloads

Design of a bubble collecting section in a high speed water tunnel for ventilated supercavitation experiments

Authors
Paik, Bu-GeunPark, Il-RyongKim, Ki-SupLee, KurnchulKim, Min-JaeKim, Kyoung-Youl
Issue Date
9월-2017
Publisher
KOREAN SOC MECHANICAL ENGINEERS
Keywords
Bubble collecting; Ventilated supercavitation; Porous plate; LDV (Laser Doppler velocimetry); Void fraction; Shadowgraph technique
Citation
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v.31, no.9, pp 4227 - 4235
Pages
9
Journal Title
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
Volume
31
Number
9
Start Page
4227
End Page
4235
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/565
DOI
10.1007/s12206-017-0821-x
ISSN
1738-494X
1976-3824
Abstract
The main objective of the present study is to design a bubble collecting section for use in ventilated supercavitation experiments. The large amounts of air ventilated around a cavitator split into small bubbles that follow the water's passage through the water tunnel. The presence of these bubbles in the test section of the water tunnel prevents effective observation of supercavitation. To enable the clear observation of cavitation shape, a bubble collecting section with large volume is necessary upstream of the test section to collect bubbles. The buoyancy of bubbles provides a simple means for their collection. However, the bubbly flows in such systems have rather high velocities and a non-uniform velocity distribution, which degrades the buoyancy effect. In the present study, a bubble collecting section with three porous plates that produce a uniformly low velocity distribution is designed and analyzed with numerical methods. The effectiveness of this approach is assessed experimentally with the 1/10 miniature model. The reduction of the void fraction downstream of the bubble collecting section was also assessed in the test section. The bubble collecting section in the full-scale water tunnel was also eventually found to be well designed through flow speed measurements and bubble visualization in the test section.
Files in This Item
Appears in
Collections
선박연구본부 > Naval Ship Engineering Research Center > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Related Researcher

Researcher Paik, Bu Geun photo

Paik, Bu Geun
지능형선박연구본부 (함정공학연구센터)
Read more

Altmetrics

Total Views & Downloads

BROWSE