投影・散乱光画像を利用したマイクロバブル衝突噴流の3次元速度計測
Microbubble flows are employed in a variety of engineering applications, such as the cleaning of surfaces, drag reduction in ship hulls and various chemical plant processes. Especially for surface cleaning, the measurement of the bubble and liquid flow speed is required for the better understanding...
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| Published in | 混相流 Vol. 30; no. 2; pp. 182 - 188 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | English |
| Published |
日本混相流学会
15.06.2016
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0914-2843 1881-5790 |
| DOI | 10.3811/jjmf.30.182 |
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| Abstract | Microbubble flows are employed in a variety of engineering applications, such as the cleaning of surfaces, drag reduction in ship hulls and various chemical plant processes. Especially for surface cleaning, the measurement of the bubble and liquid flow speed is required for the better understanding of cleaning efficiency. PIV is a useful tool for the measurement of the fluid velocity, because it is possible to measure planar flow structures without disturbing the flow field. To apply PIV to microbubble flows, the separation of microbubbles and liquid in the acquired images is required. In the present study, we present a velocity measurement system for gas-liquid two phase flows that employs phase discrimination based on the different optical properties of the bubbles and solid tracer particles. By using two cameras, the 3-dimensional position and velocity of both phases in microbubble impinging jet was successfully measured. |
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| AbstractList | Microbubble flows are employed in a variety of engineering applications, such as the cleaning of surfaces, drag reduction in ship hulls and various chemical plant processes. Especially for surface cleaning, the measurement of the bubble and liquid flow speed is required for the better understanding of cleaning efficiency. PIV is a useful tool for the measurement of the fluid velocity, because it is possible to measure planar flow structures without disturbing the flow field. To apply PIV to microbubble flows, the separation of microbubbles and liquid in the acquired images is required. In the present study, we present a velocity measurement system for gas-liquid two phase flows that employs phase discrimination based on the different optical properties of the bubbles and solid tracer particles. By using two cameras, the 3-dimensional position and velocity of both phases in microbubble impinging jet was successfully measured. |
| Author | 梅澤, 俊 椋木, 伴紀 小林, 夏穂 Konstantinos, ZAGOULIDIS 菱田, 公一 |
| Author_xml | – sequence: 1 fullname: 菱田, 公一 organization: 慶應義塾大学大学院理工学研究科 – sequence: 1 fullname: 小林, 夏穂 organization: 慶應義塾大学大学院理工学研究科 – sequence: 1 fullname: 椋木, 伴紀 organization: 慶應義塾大学大学院理工学研究科 – sequence: 1 fullname: 梅澤, 俊 organization: 慶應義塾大学大学院理工学研究科 – sequence: 1 fullname: Konstantinos, ZAGOULIDIS organization: Department of Mechanical Engineering, Imperial College London |
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| Copyright | 2016 日本混相流学会 |
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| DOI | 10.3811/jjmf.30.182 |
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| References | [1] Tamura, N., Kaneko, A., Uesawa, S., Abe, Y. and Ike, M., Development of Non-Chemical Micro-Bubble Washing Technology Using a Venturi Tube, Japanese J. Multiphase Flow, Vol. 27 (5), 577-584 (2014). [2] Murai, Y., Song, X.Q., Takagi, T., Ishikawa, M., Yamamoto, F. and Ohta, J., The Structure of Disorder Reverse Energy Cascade in Bubbly Flow (1st Report, PIV Measurement and Its Results), Trans. JSME B, Vol. 65, 161-168 (1999). [4] Moriya, G., Yasui, R. and Hishida, K., Time Series Volumetric Velocity Measurement in Aneurysm Models by Shadow Imaged Stereo Streak PTV, Proc. of 16th Int. Symp. on Appl. of Laser Tech. to Fluid Mech., Lisbon, Portugal, 9-12 July (2012). [5] Kitzhofer, J. and Brucker, C., Tomographic Particle Tracking Velocimetry Using Telecentric Imaging, Experiments in Fluids, Vol. 49, 1307-1324 (2010). [3] Fujiwara, A., Danmoto, Y., Hishida, K. and Maeda, M., Bubble Deformation and Flow Structure Measured by Double Shadow Images and PIV/LIF, Exp. Fluid, Vol. 36, 157-165 (2004). [6] Uemura, T., Yamamoto, F. and Koukawa, M., High Speed Algorithm for Particle Tracking Velocimetry Using Binary, Kashika Joho Gakkai Ronbunshu , Vol. 10 (38), 58-64 (1990). |
| References_xml | – reference: [6] Uemura, T., Yamamoto, F. and Koukawa, M., High Speed Algorithm for Particle Tracking Velocimetry Using Binary, Kashika Joho Gakkai Ronbunshu , Vol. 10 (38), 58-64 (1990). – reference: [1] Tamura, N., Kaneko, A., Uesawa, S., Abe, Y. and Ike, M., Development of Non-Chemical Micro-Bubble Washing Technology Using a Venturi Tube, Japanese J. Multiphase Flow, Vol. 27 (5), 577-584 (2014). – reference: [3] Fujiwara, A., Danmoto, Y., Hishida, K. and Maeda, M., Bubble Deformation and Flow Structure Measured by Double Shadow Images and PIV/LIF, Exp. Fluid, Vol. 36, 157-165 (2004). – reference: [2] Murai, Y., Song, X.Q., Takagi, T., Ishikawa, M., Yamamoto, F. and Ohta, J., The Structure of Disorder Reverse Energy Cascade in Bubbly Flow (1st Report, PIV Measurement and Its Results), Trans. JSME B, Vol. 65, 161-168 (1999). – reference: [4] Moriya, G., Yasui, R. and Hishida, K., Time Series Volumetric Velocity Measurement in Aneurysm Models by Shadow Imaged Stereo Streak PTV, Proc. of 16th Int. Symp. on Appl. of Laser Tech. to Fluid Mech., Lisbon, Portugal, 9-12 July (2012). – reference: [5] Kitzhofer, J. and Brucker, C., Tomographic Particle Tracking Velocimetry Using Telecentric Imaging, Experiments in Fluids, Vol. 49, 1307-1324 (2010). |
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| SubjectTerms | Microbubble flow Stereo PTV Streak Two phase flow Volumetric measurement |
| Title | 投影・散乱光画像を利用したマイクロバブル衝突噴流の3次元速度計測 |
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