Near-infrared measurement of non-axisymmetric temperature and flow fields formed by free convection around a small heating sphere in water
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- NGUYEN The Anh
- Tokyo Metropolitan University
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- WANG Zhenlei
- Tokyo Metropolitan University
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- HAN Van Cuong
- Tokyo Metropolitan University
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- KONDO Katsuya
- Tottori University
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- KAKUTA Naoto
- Tokyo Metropolitan University
Bibliographic Information
- Other Title
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- 水の微小発熱球周りの自然対流による非軸対称の流れ場と温度場の近赤外測定
Abstract
<p>This paper presents a method for measuring simultaneously non-axisymmetric three-dimensional (3D) temperature and flow fields in water formed by free convection surrounding a 1-mm-diameter heated sphere. This method is based on the temperature dependence of the absorption coefficient of water at a wavelength of 1150 nm. In the experiment, two-dimensional (2D) images of absorbance in two orthogonal directions were acquired. To reconstruct the 3D temperature distribution, we applied a non-axisymmetric Abel inverse transform to the 2D images. In addition, the flow velocity distribution was obtained by using a particle tracking method with the Lucas-Kanade algorithms. The results demonstrated that the evolution of the non-axisymmetric temperature distributions involved with free convection, and the flow velocities and directions reflected circulating flow with an upward plume.</p>
Journal
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- The Proceedings of Mechanical Engineering Congress, Japan
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The Proceedings of Mechanical Engineering Congress, Japan 2020 (0), J05224-, 2020
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390850412752404736
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- NII Article ID
- 130008003651
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- ISSN
- 24242667
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed