The Influence of Ultrasound Irradiation on Falling Sphere in Pseudo-Plastic Fluid
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- IWAMURO Minoru
- 大阪大学大学院基礎工学研究科機能創成専攻
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- WATAMURA Tomoaki
- 大阪大学大学院基礎工学研究科機能創成専攻
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- SUGIYAMA Kazuyasu
- 大阪大学大学院基礎工学研究科機能創成専攻
Bibliographic Information
- Other Title
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- 擬塑性流体中の落下球に及ぼす超音波照射の影響
- ギソセイ リュウタイ チュウ ノ ラッカキュウ ニ オヨボス チョウオンパ ショウシャ ノ エイキョウ
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Abstract
<p>Ultrasound effects on the motion of a falling sphere in water (i.e. Newtonian fluid) and in PolyAcrylAmide (PAA) solution (i.e. non-Newtonian shear-thinning fluid) are experimentally investigated via an image processing technique. The falling speed in water is confirmed to be almost irrespective of the frequency or amplitude in the applied ultrasound, while that in PAA solution is found to be higher with increasing the ultrasound intensity. In consideration of pseudo-plastic factors estimated by various velocity and length scales involved in the system, we consider that the mechanism to enhance the falling speed has the influence of viscosity in the acoustic boundary layer and its thickness.</p>
Journal
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- JAPANESE JOURNAL OF MULTIPHASE FLOW
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JAPANESE JOURNAL OF MULTIPHASE FLOW 33 (1), 87-95, 2019-03-15
THE JAPANESE SOCIETY FOR MULTIPHASE FLOW
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Details 詳細情報について
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- CRID
- 1390001288146491264
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- NII Article ID
- 130007625152
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- NII Book ID
- AN10088286
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- ISSN
- 18815790
- 09142843
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- NDL BIB ID
- 029584796
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed