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Paper Abstract and Keywords
Presentation 2016-04-18 14:20
Quantitative Discussion on Ultrasonically Levitated Droplet Rotation with Least Square Moving Particle Semi-implicit and Distributed Point Source Method
Yuji Wada, Kohei Yuge (Seikei Univ.), Hiroki Tanaka, Kentaro Nakamura (Tokyo Tech.) US2016-6
Abstract (in Japanese) (See Japanese page) 
(in English) Ultrasonic droplet levitation has recently been drawing attention as a way of non-contact transportation.
Many experiment revealed that the shape changes or streaming field on the levitating droplets,
however, quite small number of numerical simulation have discussed this phenomenon including fluid dynamics within the droplet.
In this paper, the numerical treatment of the viscoacoustic torque, which emerges from the viscous boundary layer and governs the acoustical droplet rotation, is discussed.
The Reynolds stress traction force is calculated from the DPSM result
using the idea of effective normal particle velocity through the boundary layer and input to the MPS surface particles.
A droplet levitated in an acoustic chamber is simulated using the proposed calculation method.
The droplet is vertically supported by a plane standing wave from an ultrasonic driver and
subjected to a rotating sound field excited by two acoustic sources on the side wall with different phases.
The rotation of the droplet is successfully reproduced numerically
and its acceleration is discussed and compared with those in the literature.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultrasonic levitation / Acoustic radiation force / Reynolds stress / Distributed point source method / Viscous boundary layer / Moving particle implicit / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 5, US2016-6, pp. 29-34, April 2016.
Paper # US2016-6 
Date of Issue 2016-04-11 (US) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee US  
Conference Date 2016-04-18 - 2016-04-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Nishi-Waseda Campus, Waseda University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Nonlinear Acoustics, General, etc
(Co-sponsored by Nonlinear Acoustics Society of Japan ) 
Paper Information
Registration To US 
Conference Code 2016-04-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Quantitative Discussion on Ultrasonically Levitated Droplet Rotation with Least Square Moving Particle Semi-implicit and Distributed Point Source Method 
Sub Title (in English)  
Keyword(1) Ultrasonic levitation  
Keyword(2) Acoustic radiation force  
Keyword(3) Reynolds stress  
Keyword(4) Distributed point source method  
Keyword(5) Viscous boundary layer  
Keyword(6) Moving particle implicit  
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Keyword(8)  
1st Author's Name Yuji Wada  
1st Author's Affiliation Seikei University (Seikei Univ.)
2nd Author's Name Kohei Yuge  
2nd Author's Affiliation Seikei University (Seikei Univ.)
3rd Author's Name Hiroki Tanaka  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
4th Author's Name Kentaro Nakamura  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech.)
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Speaker Author-1 
Date Time 2016-04-18 14:20:00 
Presentation Time 25 minutes 
Registration for US 
Paper # US2016-6 
Volume (vol) vol.116 
Number (no) no.5 
Page pp.29-34 
#Pages
Date of Issue 2016-04-11 (US) 


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