On the development of coherent structure in a plane jet (part 2, investigation of spatio-temporal velocity structure by the KL expansion)
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- SAKAI Yasuhiko
- Department of Mechanical Science and Engineering, Nagoya University
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- TANAKA Nobuhiko
- Department of Mechanical Science and Engineering, Nagoya University
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- KUSHIDA Takehiro
- Department of Mechanical Science and Engineering, Nagoya University
書誌事項
- タイトル別名
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- On the Development of Coherent Structure in a Plane Jet (Part 1, Characteristics of Two-Point Velocity Correlation and Analysis of Eigenmodes by the KL Expansion)
- (Part 1, Characteristics of Two-Point Velocity Correlation and Analysis of Eigenmodes by the KL Expansion)
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説明
The simultaneous measurement of the velocities at two points with X-type hot wire probes has been performed in three regions of a plane jet (i.e., the potential core region, the interaction region and the self-preserving region). The Karhunen Loève (KL) expansion was applied to the velocity data, and the development of coherent structure was investigated by the eigenvalues and eigenfunctions as well as the spatial velocity correlations. It is found that in the potential core region the first and second modes are dominant in the kinetic energy with almost the same magnitude. The profiles of the eigenfunctions downstream of the interaction region show that the first mode of streamwise velocity u is asymmetrical about the jet centerline whereas that of cross-streamwise velocity v is symmetrical. These results are consistent with the feature of the two-point velocity correlation.
収録刊行物
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- JSME International Journal Series B Fluids and Thermal Engineering
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JSME International Journal Series B Fluids and Thermal Engineering 49 (1), 115-124, 2006
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390001204677092864
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- NII論文ID
- 110004086926
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- NII書誌ID
- AA10888815
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- BIBCODE
- 2006JSMEB..49..115S
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- ISSN
- 13475371
- 13408054
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- HANDLE
- 2237/9011
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- NDL書誌ID
- 7813105
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可