音響定在波による気泡制御手法に関する研究(流体工学,流体機械)

概要

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It is expected that pure and high performance materials could be manufactured under the micro-gravity environment in space. However, if bubbles are initially trapped in the molten material, they cannot escape from the material under the micro-gravity condition and could adversely affect the product quality. In the present study the bubble motion control technique by an ultrasonic acoustic standing wave field under the micro-gravity environment is experimentally studied. At first, the experimental characteristics of the bubble movement in the ultrasonic wave field is theoretically examined. Next, it is numerically demonstated that the sound pressure field is calculated by simultaneously solving the Navier-Stokes equation and the continuity equation. Finally, one of the trials is conducted to clarify whether the prediction of the multi-dimensional bubble deformation in the ultrasonic wave field by using SOLA-VOF method is possible or not.
一般社団法人日本機械学会の論文
2005-05-25