In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 91, No. 4_Supplement ( 1992-04-01), p. 2397-2397
Abstract:
Acoustical levitation has been applied in studies of droplet dynamics and interfacial properties. On the ground, when the density difference between droplet and host medium is large, the intensity of the levitation sound field must be strong enough to overcome gravity. As a result, the droplet may significantly deviate from spherical shape. A numerical method to determine the finite deformation and location of an acoustically levitated liquidated liquid drop in air has been developed. Compared with the previous studies [P. L. Marston, J. Acoust. Soc. Am. 67, 15–26 (1980) and H. W. Jackson et al., J. Acoust. Soc. Am. 84, 1845–1862 (1988)], the interactions between droplet and sound field and the nonspherical acoustical scattering are included in our analysis, making the present method valid for droplets with aspect ratio as large as 2. With this method, the droplet shapes and locations as functions of sound pressure, surface tension, and droplet volume in both gravity and nongravity environments have been systematically calculated. The numerical results agree well with these experimental measurements and those of Trinh and Hsu [J. Acoust. Soc. Am. 79, 1335–1338 (1986)] . [Work supported by NASA through JPL, Contract No. 958722.]
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
1992
detail.hit.zdb_id:
1461063-2
