| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2015-11-09 |
| タイトル |
|
|
タイトル |
Transitional Characteristics of Phase Shift in Lock-in Phenomena of an Oscillating Cylinder |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Oscillation |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Phase Lag |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Synchronization |
| キーワード |
|
|
主題Scheme |
Other |
|
主題 |
Lock-In |
| 資源タイプ |
|
|
資源 |
http://purl.org/coar/resource_type/c_6501 |
|
タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
HANIU, Hiroyuki
KIM, Sangil
MIYAKOSHI, Katsumi
TAKAI, Kazunori
ISLAM, Mohammad Rofiqul
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
In this study, characteristics of phase lag between displacement of forcibly oscillating test body and velocity fluctuation caused by vortex formation behind the test body were investigated. A right isosceles triangular cross-sectioned prism was used as the test body. The base of the isosceles triangle is 100mm and span-wise length of the prism is 300mm. The test body was rotationally oscillated at seven different frequencies from 0.205Hz to 0.235Hz in 0.005Hz interval providing the natural vortex shedding frequency is 0.220Hz. As the results, the behavior of the phase lag is summarized as followings. i) In general sense, it is well known that the phase lag is shifted by π within the lock-in region. Besides that, intermittent slip of phase lag was observed. ii) The velocity fluctuation does not synchronize perfectly with the forced oscillation even when the frequency of the forced oscillation is set to natural vortex shedding frequency of the test body. iii) For the case of forced oscillation frequency is set to the natural vortex shedding frequency, synchronization rate of the velocity fluctuation with the oscillation was found to be 80% at the maximum. |
| 書誌情報 |
Journal of Fluid Science and Technology
巻 4,
号 3,
p. 479-489,
発行日 2009-06
|
| DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://doi.org/10.1299/jfst.4.479 |
| 権利 |
|
|
権利情報 |
c 2009 by The Japan Society of Mechanical Engineers |
| 出版者 |
|
|
出版者 |
The Japan Society of Mechanical Engineers （一般社団法人日本機会学会） |
|
言語 |
en |
| 著者版フラグ |
|
|
言語 |
en |
|
値 |
publisher |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
2009.06_Transitional Characteristics of Phase Shift in Lock-In Phenomena of a Oscillating Cylinder .pdf (632.0 kB)
