Steady entry flow in a curved pipe

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Abstract

Laser-Doppler velocity measurements were performed on the entry flow in a 90° bend of circular cross-section with a curvature ratio a/R = 1/6. The steady entry velocity profile was parabolic, having a Reynolds number Re = 700, with a corresponding Dean number ¿ = 286. Both axial and secondary velocities were measured, enabling a detailed description of the complete flow field. The secondary flow at the entrance of the bend was measured to be directed completely towards the inner bend. Significant disturbance of the axial velocity field was not measured until a downstream distance (aR)½. Maximum secondary velocities were measured at 1.7 (aR)½ downstream from the inlet. The development of the axial flow field can be quite well explained from the secondary velocity field.
Original languageEnglish
Pages (from-to)233-246
JournalJournal of Fluid Mechanics
Volume177
DOIs
Publication statusPublished - 1987

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entry
velocity distribution
Pipe
flow distribution
axial flow
secondary flow
Flow fields
velocity measurement
entrances
Reynolds number
disturbances
Intake systems
curvature
Axial flow
Secondary flow
Velocity measurement
cross sections
lasers
Lasers

Cite this

@article{f6dda70d530a440fa0003f060f428ad0,
title = "Steady entry flow in a curved pipe",
abstract = "Laser-Doppler velocity measurements were performed on the entry flow in a 90° bend of circular cross-section with a curvature ratio a/R = 1/6. The steady entry velocity profile was parabolic, having a Reynolds number Re = 700, with a corresponding Dean number ¿ = 286. Both axial and secondary velocities were measured, enabling a detailed description of the complete flow field. The secondary flow at the entrance of the bend was measured to be directed completely towards the inner bend. Significant disturbance of the axial velocity field was not measured until a downstream distance (aR)½. Maximum secondary velocities were measured at 1.7 (aR)½ downstream from the inlet. The development of the axial flow field can be quite well explained from the secondary velocity field.",
author = "P.H.M. Bovendeerd and {Steenhoven, van}, A.A. and {Vosse, van de}, F.N. and G. Vossers",
year = "1987",
doi = "10.1017/S0022112087000934",
language = "English",
volume = "177",
pages = "233--246",
journal = "Journal of Fluid Mechanics",
issn = "0022-1120",
publisher = "Cambridge University Press",

}

Steady entry flow in a curved pipe. / Bovendeerd, P.H.M.; Steenhoven, van, A.A.; Vosse, van de, F.N.; Vossers, G.

In: Journal of Fluid Mechanics, Vol. 177, 1987, p. 233-246.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Steady entry flow in a curved pipe

AU - Bovendeerd, P.H.M.

AU - Steenhoven, van, A.A.

AU - Vosse, van de, F.N.

AU - Vossers, G.

PY - 1987

Y1 - 1987

N2 - Laser-Doppler velocity measurements were performed on the entry flow in a 90° bend of circular cross-section with a curvature ratio a/R = 1/6. The steady entry velocity profile was parabolic, having a Reynolds number Re = 700, with a corresponding Dean number ¿ = 286. Both axial and secondary velocities were measured, enabling a detailed description of the complete flow field. The secondary flow at the entrance of the bend was measured to be directed completely towards the inner bend. Significant disturbance of the axial velocity field was not measured until a downstream distance (aR)½. Maximum secondary velocities were measured at 1.7 (aR)½ downstream from the inlet. The development of the axial flow field can be quite well explained from the secondary velocity field.

AB - Laser-Doppler velocity measurements were performed on the entry flow in a 90° bend of circular cross-section with a curvature ratio a/R = 1/6. The steady entry velocity profile was parabolic, having a Reynolds number Re = 700, with a corresponding Dean number ¿ = 286. Both axial and secondary velocities were measured, enabling a detailed description of the complete flow field. The secondary flow at the entrance of the bend was measured to be directed completely towards the inner bend. Significant disturbance of the axial velocity field was not measured until a downstream distance (aR)½. Maximum secondary velocities were measured at 1.7 (aR)½ downstream from the inlet. The development of the axial flow field can be quite well explained from the secondary velocity field.

U2 - 10.1017/S0022112087000934

DO - 10.1017/S0022112087000934

M3 - Article

VL - 177

SP - 233

EP - 246

JO - Journal of Fluid Mechanics

JF - Journal of Fluid Mechanics

SN - 0022-1120

ER -