| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-07-10 |
| タイトル |
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|
タイトル |
Local mixing of round and six-lobed jets evaluated by stretching of material lines |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Turbulence |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Jet |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Numerical Simulation |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Mixing |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Material Line |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
Takahashi, Mamoru
Matsui, Ryota
Tsujimoto, Koichi
Ando, Toshitake
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| 抄録 |
|
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内容記述タイプ |
Abstract |
|
内容記述 |
This study evaluates the local mixing performance of jet flows in the developing state by stretching material lines, which are line-shaped passive objects composed of identical fluid elements. Specifically, the mixing performance of a round jet is compared with that of a lobed jet with six exit edge peaks. This is not a parametric study; thus, our conclusions are expected to be valid for other geometries, as they are based on the azimuthal curvature of the jet edges. In the early stages of the round-jet case, the initial lateral vortex rings dominate the mixing even when secondary quasi-streamwise vortices are developed. Large-scale structures persist even in the late stages, in which turbulence is considerably developed, actively folding the material lines and enhancing local mixing through small-scale vortices. Such large-scale structures are absent in the lobed jet, resulting in inferior mixing in the late stages. The material lines in the lobed jet illustrate that the mixing process varies depending on the curvature of the jet-edge regions in noncircular jets. The fluids in regions with large edge curvatures undergo little mixing during the early stages. However, straight (small curvature) exit parts exhibit relatively active mixing. Consequently, they may compensate for their lower mixing efficiency and achieve a greater amount of mixed fluid than round jets. |
|
言語 |
en |
| 書誌情報 |
en : Fluid Dynamics Research
巻 57,
p. 045501,
発行日 2025-07-04
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| ISSN |
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収録物識別子タイプ |
EISSN |
|
収録物識別子 |
18737005 |
| 書誌レコードID |
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|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA12466655 |
| DOI |
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|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
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|
関連識別子 |
10.1088/1873-7005/ade822 |
| 権利 |
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|
権利情報 |
This is the Accepted Manuscript version of an article accepted for publication in [Fluid Dynamics Research]. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at [https://doi.org/10.1088/1873-7005/ade822] |
|
言語 |
en |
| 著者版フラグ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 出版者 |
|
|
出版者 |
IOP Publishing |
|
言語 |
en |
| 資源タイプ（三重大） |
|
|
言語 |
ja |
|
値 |
Journal Article / 学術雑誌論文 |
2025JA0002.pdf (4 MB)
