The onset of oblique vortex shedding behind a heated circular cylinder in laminar wake regime

Ming Hsun Wu; Zdenǎk Trávníček; An Bang Wang

doi:10.1063/1.3675551

The onset of oblique vortex shedding behind a heated circular cylinder in laminar wake regime

Ming Hsun Wu, Zdenǎk Trávníček, An Bang Wang

機械工程學系

研究成果: Article › 同行評審

2 引文斯高帕斯（Scopus）

摘要

Oblique vortex shedding (OVS) behind a heated circular cylinder in air was experimentally investigated. Similar to that in the parallel vortex shedding (PVS), the results show that the non-dimensionalized shedding frequency, Strouhal number, decreases under the influence of cylinder heating for oblique shedding mode. Although the onset Reynolds number of OVS increases with the cylinder temperature, the onset effective Reynolds number remains 63.3 ± 1.3 regardless of the cylinder heating. A general Strouhal-Reynolds-number relationship for OVS has been found based on the effective temperature concept in the present study. The ratio of the critical Reynolds numbers for the onsets of OVS and PVS is found to be an invariant with value of 4/3 for both isothermal and non-isothermal cases despite different length/diameter ratios and end conditions.

原文	English
文章編號	011701
期刊	Physics of Fluids
卷	24
發行號	1
DOIs	https://doi.org/10.1063/1.3675551
出版狀態	Published - 2012 1月 5

All Science Journal Classification (ASJC) codes

計算力學
凝聚態物理學
材料力學
機械工業
流體流動和轉移過程

存取文件

10.1063/1.3675551

其它文件與鏈接

引用此

@article{8481c49f33db440ebb2f2e7eecaa80de,

title = "The onset of oblique vortex shedding behind a heated circular cylinder in laminar wake regime",

abstract = "Oblique vortex shedding (OVS) behind a heated circular cylinder in air was experimentally investigated. Similar to that in the parallel vortex shedding (PVS), the results show that the non-dimensionalized shedding frequency, Strouhal number, decreases under the influence of cylinder heating for oblique shedding mode. Although the onset Reynolds number of OVS increases with the cylinder temperature, the onset effective Reynolds number remains 63.3 ± 1.3 regardless of the cylinder heating. A general Strouhal-Reynolds-number relationship for OVS has been found based on the effective temperature concept in the present study. The ratio of the critical Reynolds numbers for the onsets of OVS and PVS is found to be an invariant with value of 4/3 for both isothermal and non-isothermal cases despite different length/diameter ratios and end conditions.",

author = "Wu, {Ming Hsun} and Zdenǎk Tr{\'a}vn{\'i}{\v c}ek and Wang, {An Bang}",

note = "Funding Information: We gratefully acknowledge the financial supports from the National Science Council, Taiwan and the GACR—Czech Science Foundation (Taiwanese and Czech parts of the joint project No. NSC 100-2923-E-002-002-MY3 and P101/11/J019), and the research plan AV0Z20760514. Ming-Hsun Wu would also like to thank the support from Research Center for Energy Technology and Strategy of National Cheng Kung University.",

year = "2012",

month = jan,

day = "5",

doi = "10.1063/1.3675551",

language = "English",

volume = "24",

journal = "Physics of Fluids",

issn = "1070-6631",

publisher = "American Institute of Physics Publising LLC",

number = "1",

}

TY - JOUR

T1 - The onset of oblique vortex shedding behind a heated circular cylinder in laminar wake regime

AU - Wu, Ming Hsun

AU - Trávníček, Zdenǎk

AU - Wang, An Bang

N1 - Funding Information: We gratefully acknowledge the financial supports from the National Science Council, Taiwan and the GACR—Czech Science Foundation (Taiwanese and Czech parts of the joint project No. NSC 100-2923-E-002-002-MY3 and P101/11/J019), and the research plan AV0Z20760514. Ming-Hsun Wu would also like to thank the support from Research Center for Energy Technology and Strategy of National Cheng Kung University.

PY - 2012/1/5

Y1 - 2012/1/5

N2 - Oblique vortex shedding (OVS) behind a heated circular cylinder in air was experimentally investigated. Similar to that in the parallel vortex shedding (PVS), the results show that the non-dimensionalized shedding frequency, Strouhal number, decreases under the influence of cylinder heating for oblique shedding mode. Although the onset Reynolds number of OVS increases with the cylinder temperature, the onset effective Reynolds number remains 63.3 ± 1.3 regardless of the cylinder heating. A general Strouhal-Reynolds-number relationship for OVS has been found based on the effective temperature concept in the present study. The ratio of the critical Reynolds numbers for the onsets of OVS and PVS is found to be an invariant with value of 4/3 for both isothermal and non-isothermal cases despite different length/diameter ratios and end conditions.

AB - Oblique vortex shedding (OVS) behind a heated circular cylinder in air was experimentally investigated. Similar to that in the parallel vortex shedding (PVS), the results show that the non-dimensionalized shedding frequency, Strouhal number, decreases under the influence of cylinder heating for oblique shedding mode. Although the onset Reynolds number of OVS increases with the cylinder temperature, the onset effective Reynolds number remains 63.3 ± 1.3 regardless of the cylinder heating. A general Strouhal-Reynolds-number relationship for OVS has been found based on the effective temperature concept in the present study. The ratio of the critical Reynolds numbers for the onsets of OVS and PVS is found to be an invariant with value of 4/3 for both isothermal and non-isothermal cases despite different length/diameter ratios and end conditions.

UR - http://www.scopus.com/inward/record.url?scp=84856481415&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84856481415&partnerID=8YFLogxK

U2 - 10.1063/1.3675551

DO - 10.1063/1.3675551

M3 - Article

AN - SCOPUS:84856481415

SN - 1070-6631

VL - 24

JO - Physics of Fluids

JF - Physics of Fluids

IS - 1

M1 - 011701

ER -

The onset of oblique vortex shedding behind a heated circular cylinder in laminar wake regime

摘要

All Science Journal Classification (ASJC) codes

存取文件

其它文件與鏈接

指紋

引用此