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- WAKAMATSU Yusuke
- Miyazaki University
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- OZONO S.
- Miyazaki University
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- SHIN B.
- Miyazaki University Corresponding Author
Bibliographic Information
- Other Title
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- ランダム位相法の吹き出し直後の乱流圧力場の観察
Abstract
<p>Easy control of turbulence intensity and scale is of basic importance for the experiments concerning effects of turbulence in a wind tunnel. Using a ‘multi-fan wind tunnel’, we devised ‘random-phase mode’, which makes use of shear layers generated between the outflows from adjacent ducts, and found that this driving mode realizes high intensity (12-16 %) and large integral scale (0.6-0.7 m). It is focused on the pressure characteristics deeply related to vortex formation and tried to clarify the dominant parameters of ‘random-phase mode’. In order to determine which parameter facilitates the turbulence control, we conducted measurements of pressure field immediately downstream of the inlet of the test section. As a result pressure drop depends on the r.m.s value ue’ of the input velocity signal. It was confirmed that the turbulence intensity increases with ue’.</p>
Journal
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- The Proceedings of Conference of Kyushu Branch
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The Proceedings of Conference of Kyushu Branch 2019.72 (0), E45-, 2019
The Japan Society of Mechanical Engineers
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Details 詳細情報について
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- CRID
- 1390002184877585792
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- NII Article ID
- 130007802010
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- ISSN
- 24242780
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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