Developing three-dimensional qualitative visualization method for supersonic jets flow field using rainbow schlieren computed tomography
| Project/Area Number |
15K05805
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | The University of Kitakyushu |
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Principal Investigator |
Nakao Shinichiro 北九州市立大学, 国際環境工学部, 准教授 (40331029)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 超音速 / 定量化 / 可視化 / 衝撃波 / シュリーレン / 噴流 / 3次元 / レインボーシュリーレン / 3次元密度場計測 / 超音速噴流 / CT計測 / 密度場 |
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| Outline of Final Research Achievements |
The rainbow schlieren deflectometry is combined with the computed tomography to obtain three-dimensional density fields of a shock-containing free jet issued from a Laval nozzle(1mm*1ｍｍ). Experiments have been performed at a nozzle operating pressure of where the nozzle is operated at a slightly underexpanded condition. Multidirectional rainbow schlieren pictures of the jet can be acquired by rotating the nozzle about its longitudinal axis in equal angular intervals and the three-dimensional density fields are reconstructed by two types of image analyses for experimental data It is found that excellent quantitative agreement is reached between the jet three-dimensional density fields reconstructed from both the algorithms. The present rainbow schlieren technique is found to be significantly effective to examine a fine shock-cell structure of the shock-containing jet and makes it possible to provide experimental data with high accuracy and reliability on the jet density field.
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Report
(4 results)
Research Products
(31 results)
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[Journal Article] Optical Measurements of Shock Waves in Critical Nozzles at Low Reynolds Numbers2017
Author(s)
Yagi,S., Inoue,S., Nakao,S., Ono,D., and Miyazato,Y.
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Journal Title
Journal of Flow Control, Measurements & Visualization
Volume: 5
Issue: 02
Pages: 36-50
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Three-Dimensional Rainbow Schlieren Measurements in Underexpanded Sonic Jets from Axisymmetric Convergent Nozzles2016
Author(s)
Takano, H., Kamikihara, D., Ono, D., Nakao, S., Yamamoto, H., and Miyazato, Y.
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Journal Title
Journal of Thermal Science
Volume: 25
Issue: 1
Pages: 78-83
DOI
Related Report
Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
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