Vortex patterns of the flow in a curved duct

Xiaoyun Wu; Sangding Lai; Kyoji Yamamoto; Shinichiro Yanase

doi:10.1016/j.egypro.2011.10.121

Vortex patterns of the flow in a curved duct

Xiaoyun Wu, Sangding Lai, Kyoji Yamamoto, Shinichiro Yanase

Graduate School of Natural Science and Technology

Research output: Contribution to journal › Conference article › peer-review

Abstract

The vortex patterns of the secondary flow in a curved duct of square cross-section are numerically investigated. The flow is driven by the axial pressure gradient as well as the walls rotation of the duct except the outer wall around the center of curvature. When the rotation is in the same direction as the negative pressure gradient, the secondary flow shows complicated multiple patterns, which consists of two-vortex, four-vortex, eight-vortex or even non-symmetric secondary flow pattern. An analysis of linear stability on the flow is also carried out to distinguish possible flow patterns among multiple steady solutions.

Original language	English
Pages (from-to)	920-927
Number of pages	8
Journal	Energy Procedia
Volume	12
DOIs	https://doi.org/10.1016/j.egypro.2011.10.121
Publication status	Published - 2011
Event	1st International Conference on Smart Grid and Clean Energy Technologies, ICSGCE 2011 - Chengdu, China Duration: Sep 27 2011 → Sep 30 2011

Keywords

Curved duct
Screw pump
Secondary flow

ASJC Scopus subject areas

Energy(all)

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title = "Vortex patterns of the flow in a curved duct",

abstract = "The vortex patterns of the secondary flow in a curved duct of square cross-section are numerically investigated. The flow is driven by the axial pressure gradient as well as the walls rotation of the duct except the outer wall around the center of curvature. When the rotation is in the same direction as the negative pressure gradient, the secondary flow shows complicated multiple patterns, which consists of two-vortex, four-vortex, eight-vortex or even non-symmetric secondary flow pattern. An analysis of linear stability on the flow is also carried out to distinguish possible flow patterns among multiple steady solutions.",

keywords = "Curved duct, Screw pump, Secondary flow",

author = "Xiaoyun Wu and Sangding Lai and Kyoji Yamamoto and Shinichiro Yanase",

note = "Copyright: Copyright 2017 Elsevier B.V., All rights reserved.; 1st International Conference on Smart Grid and Clean Energy Technologies, ICSGCE 2011 ; Conference date: 27-09-2011 Through 30-09-2011",

year = "2011",

doi = "10.1016/j.egypro.2011.10.121",

language = "English",

volume = "12",

pages = "920--927",

journal = "Energy Procedia",

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publisher = "Elsevier BV",

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TY - JOUR

T1 - Vortex patterns of the flow in a curved duct

AU - Wu, Xiaoyun

AU - Lai, Sangding

AU - Yamamoto, Kyoji

AU - Yanase, Shinichiro

PY - 2011

Y1 - 2011

N2 - The vortex patterns of the secondary flow in a curved duct of square cross-section are numerically investigated. The flow is driven by the axial pressure gradient as well as the walls rotation of the duct except the outer wall around the center of curvature. When the rotation is in the same direction as the negative pressure gradient, the secondary flow shows complicated multiple patterns, which consists of two-vortex, four-vortex, eight-vortex or even non-symmetric secondary flow pattern. An analysis of linear stability on the flow is also carried out to distinguish possible flow patterns among multiple steady solutions.

AB - The vortex patterns of the secondary flow in a curved duct of square cross-section are numerically investigated. The flow is driven by the axial pressure gradient as well as the walls rotation of the duct except the outer wall around the center of curvature. When the rotation is in the same direction as the negative pressure gradient, the secondary flow shows complicated multiple patterns, which consists of two-vortex, four-vortex, eight-vortex or even non-symmetric secondary flow pattern. An analysis of linear stability on the flow is also carried out to distinguish possible flow patterns among multiple steady solutions.

KW - Curved duct

KW - Screw pump

KW - Secondary flow

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U2 - 10.1016/j.egypro.2011.10.121

DO - 10.1016/j.egypro.2011.10.121

M3 - Conference article

AN - SCOPUS:84555170249

VL - 12

SP - 920

EP - 927

JO - Energy Procedia

JF - Energy Procedia

SN - 1876-6102

T2 - 1st International Conference on Smart Grid and Clean Energy Technologies, ICSGCE 2011

Y2 - 27 September 2011 through 30 September 2011

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