Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

A study on the estimation of bubble size distribution using an acoustic inversion method

Authors
Park, C.Jeong, S.W.Kim, G.D.Moon, I.Yim, G.
Issue Date
2020
Publisher
Acoustical Society of Korea
Keywords
Acoustic inversion; Bubble experiment; Bubble size distribution; Insertion loss
Citation
Journal of the Acoustical Society of Korea, v.39, no.3, pp 151 - 162
Pages
12
Journal Title
Journal of the Acoustical Society of Korea
Volume
39
Number
3
Start Page
151
End Page
162
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/314
DOI
10.7776/ASK.2020.39.3.151
ISSN
1225-4428
2287-3775
Abstract
This paper presents an acoustic inversion method for estimating the bubble size distribution. The estimation error of the attenuation coefficient represented by a Fredholm integral equation of the first kind is defined as an objective function, and an optimal solution is found by applying the Levenberg-Marquardt (LM) method. In order to validate the effectiveness of the inversion method, numerical simulations using two types of bubble distribution are performed. In addition, a series of experiments are carried out in a water tank (1.0 m × 0.54 m × 0.6 m), using bubbles generated by three different generators. Images of the distributed bubbles are obtained by a high-speed camera, and the insertion losses of the bubble layer are measured using a source and a hydrophone. The image is post-processed to glance a distribution characteristics of each bubble generator. Finally, the size distribution of bubbles is estimated by applying the inversion method to the measured insertion loss. From the inversion results, it was observed that the number of bubbles increases exponentially as the bubble size decreases, and then increases again after the local peak at 70 μm - 120 μm. Copyright?2020 The Acoustical Society of Korea.
Files in This Item
There are no files associated with this item.
Appears in
Collections
지능형선박연구본부 > 자율운항선박실증연구센터 > Journal Articles

qrcode

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

Related Researcher

Researcher Kim, Gun Do photo

Kim, Gun Do
지능형선박연구본부 (함정공학연구센터)
Read more

Altmetrics

Total Views & Downloads

BROWSE