2000 Fiscal Year Final Research Report Summary
Transltional motion control of large bubble in liquid by high power ultrasonic wave
| Project/Area Number |
11650204
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thermal engineering
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| Research Institution | University of Tsukuba (2000)
Yamagata University (1999) |
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Principal Investigator |
ABE Yutaka University of Tsukuba, Institute of Engineering Mechanics and Systems, Associate Professor, 機能工学系, 助教授 (10241720)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUKUMA Yosuke University, Department of Chemical Engineering, Associate Professor, 大学院・工学研究院, 助教授 (70282241)
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| Project Period (FY) |
1999 – 2000
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| Keywords | Reduced gravity / New materials / Ultrasonic wave / Bubble in liquid / Translational motion / Numerical / Bubble deformation / Visual data analysis |
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| Research Abstract |
Under the micro-gravity environment, pure and high performance materials expected to be manufactured. However, if bubbles are entrapped in the initial melted material under the micro-gravity condition, the bubbles cannot escape from the material and affect bad influence on the product. In the present study, high power ultrasonic wave is adopted to control the bubble motion under the micro-gravity environment. In the present study, it is confirmed that the bubble is hold certain position by ultrasonic standing wave in the water and can be controlled by moving the ultrasonic standing wave field. Furthermore, the ultrasonic transducer and ultrasonic vibration system is improved. As the result, it is confirmed that lager bubble can be hold and the bubble in the ultrasonic wave field can be moved at any position.
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