Light extinction properties of underwater bubble films

MA Zhi-guo; WANG Jiang-an; YU Yang; SHI Sheng-wei

In order to study the transmission properties of laser in bubble films, the extinction section and the extinction efficiency of bubbles were calculated by means of Mie scattering theory.The light extinction properties of underwater bubble films were analyzed theoretically and validated in laboratory based on the Lambert-Beer law.The laser power transmitted through bubble film of different density, thickness, and distances was measured with a power meter.The results indicated that the power decayed exponentially with the density and the thickness, but had no relation to the distance between the film and the detector.The conclusions are helpful for optical detection of bubble wakes of ships.

Corresponding author: WANG Jiang-an, gdyfzx@163.com;

1. College of Electronic Engineering, Naval University of Engineering, Wuhan 430033, China;

2. Department of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China

Received Date: 2007-10-29

Accepted Date: 2007-12-04

Available Online: 2009-02-25

Abstract: In order to study the transmission properties of laser in bubble films, the extinction section and the extinction efficiency of bubbles were calculated by means of Mie scattering theory.The light extinction properties of underwater bubble films were analyzed theoretically and validated in laboratory based on the Lambert-Beer law.The laser power transmitted through bubble film of different density, thickness, and distances was measured with a power meter.The results indicated that the power decayed exponentially with the density and the thickness, but had no relation to the distance between the film and the detector.The conclusions are helpful for optical detection of bubble wakes of ships.

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Reference (12)

[1]	WANG J A,JIANG X Zh,MA Zh G,et al.Study on back light-scattering property of bubbles in ship wake[J].Laser Technology,2005,29 (2):205-206(in Chinese).
[2]	STROND J S,MABSTON P L.Transient bubble oscillations associated with the under-water noise of rain detected optically and some properties of light 8canering by bubbles[C]//Bubble Dynamics and Interface Phenomena.Netherlands:Kluwer Academic Publishers,1994:161-169.
[3]	JI Y J,HE JH,CHEN L Y.Scatter light of bubble and the distribution of bubble size[J].Laser Technology,2004,28(4):414-416(in Chinese).
[4]	ZHANG X H,LEI X H,RAO J H,et al.Study of homing means for laset-wake-homing torpedoes[J].Laser Technology,2005,29(5):494-500(in Chinese).
[5]	ZHU D H,ZHANG X H.Ship wake detection based on laser Doppler effect[J].Laser Technology,2006,30(3):298-300(in Chinese).
[6]	PEREIRA F,GHARIB M,DABIRI D,et al.Instantaneous whole field measurement of velocity and size of air micmbubbles[C]//Tenth Intemational Symposium on Application of Lsser Techniques tO Fluid Mechanics.Lisbon:Springer Berlin/Heidelbang.2000:1-11.
[7]	ZHANG X D,LEWI S M.The volume scattering function of natural bubble populations[J].Limnology and Oceanography,2002.47(5):1273-1282.
[8]	ZHANG X D,LEWIS M,JOHNSON B.Influcnce of bubbles on seattering of light in the ocean[J].Appl Opt,1998,37(27):6525-6536.
[9]	KOKHANOVSKY A.Optical properties of bubbles[J].J Optics,2003,A5(1):47-52.
[10]	KOKHANOVSKY A.Single light scattering:bubbles vetdus droplets[J].America Journal of Physics,2004,72(2):258-263.
[11]	CARRICA P M,DREW D.BONETTO F,et al.A poly-disperze medel for bubbly two-phase flow around a surface ship[J].International Joumai of Multi-phase Flow,1999,25(2):257-305.
[12]	BOHBEN C F,HOFFMAN D R.Absorption and scattering of light by small particles[M].New York:Wiley,1983:530-531.

Light extinction properties of underwater bubble films

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