Wall shear stress and periodical oscillation induced in side branch at right angle branch in laminar steady flow

Ryuhei Yamaguchi, Susumu Kudo, Masaya Shigeta, Toshiyuki Hayase

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In the present study, the wall shear stress and the flow structure in the right angle branch have been experimentally studied in laminar steady flow. The side branch bifurcates at right angle from the trunk, and both upstream and downstream corners at the entrance of the side branch are square edge. In the trunk, the wall shear stress takes very large value at the upstream corner and the change of wall shear stress around the upstream corner is comparable to that around the flow divider. It is noticed that there is a periodical oscillation of velocity downstream of the separation region in the side branch. The Strouhal number is independent on the Reynolds number in the side branch. There would be a probability that this phenomenon is similar to that of Karman vortex, i.e., the flow in the side branch periodically oscillates.

Original languageEnglish
Pages (from-to)845-850
Number of pages6
JournalAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Volume251
Publication statusPublished - Dec 1 2000
Externally publishedYes

Fingerprint

Steady flow
Shear stress
Strouhal number
Flow structure
Vortex flow
Reynolds number

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Wall shear stress and periodical oscillation induced in side branch at right angle branch in laminar steady flow. / Yamaguchi, Ryuhei; Kudo, Susumu; Shigeta, Masaya; Hayase, Toshiyuki.

In: American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED, Vol. 251, 01.12.2000, p. 845-850.

Research output: Contribution to journalArticle

@article{5bbbe36e577d4b24aacfa49e559260c8,
title = "Wall shear stress and periodical oscillation induced in side branch at right angle branch in laminar steady flow",
abstract = "In the present study, the wall shear stress and the flow structure in the right angle branch have been experimentally studied in laminar steady flow. The side branch bifurcates at right angle from the trunk, and both upstream and downstream corners at the entrance of the side branch are square edge. In the trunk, the wall shear stress takes very large value at the upstream corner and the change of wall shear stress around the upstream corner is comparable to that around the flow divider. It is noticed that there is a periodical oscillation of velocity downstream of the separation region in the side branch. The Strouhal number is independent on the Reynolds number in the side branch. There would be a probability that this phenomenon is similar to that of Karman vortex, i.e., the flow in the side branch periodically oscillates.",
author = "Ryuhei Yamaguchi and Susumu Kudo and Masaya Shigeta and Toshiyuki Hayase",
year = "2000",
month = "12",
day = "1",
language = "English",
volume = "251",
pages = "845--850",
journal = "American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED",
issn = "0888-8116",

}

TY - JOUR

T1 - Wall shear stress and periodical oscillation induced in side branch at right angle branch in laminar steady flow

AU - Yamaguchi, Ryuhei

AU - Kudo, Susumu

AU - Shigeta, Masaya

AU - Hayase, Toshiyuki

PY - 2000/12/1

Y1 - 2000/12/1

N2 - In the present study, the wall shear stress and the flow structure in the right angle branch have been experimentally studied in laminar steady flow. The side branch bifurcates at right angle from the trunk, and both upstream and downstream corners at the entrance of the side branch are square edge. In the trunk, the wall shear stress takes very large value at the upstream corner and the change of wall shear stress around the upstream corner is comparable to that around the flow divider. It is noticed that there is a periodical oscillation of velocity downstream of the separation region in the side branch. The Strouhal number is independent on the Reynolds number in the side branch. There would be a probability that this phenomenon is similar to that of Karman vortex, i.e., the flow in the side branch periodically oscillates.

AB - In the present study, the wall shear stress and the flow structure in the right angle branch have been experimentally studied in laminar steady flow. The side branch bifurcates at right angle from the trunk, and both upstream and downstream corners at the entrance of the side branch are square edge. In the trunk, the wall shear stress takes very large value at the upstream corner and the change of wall shear stress around the upstream corner is comparable to that around the flow divider. It is noticed that there is a periodical oscillation of velocity downstream of the separation region in the side branch. The Strouhal number is independent on the Reynolds number in the side branch. There would be a probability that this phenomenon is similar to that of Karman vortex, i.e., the flow in the side branch periodically oscillates.

UR - http://www.scopus.com/inward/record.url?scp=0346278065&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0346278065&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0346278065

VL - 251

SP - 845

EP - 850

JO - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED

JF - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED

SN - 0888-8116

ER -