Stagnation zone formation on the axis of a closed vortex flow

I. V. Naumov; Valery Okulov; Robert Flemming Mikkelsen

Stagnation zone formation on the axis of a closed vortex flow

I. V. Naumov, Valery Okulov, Robert Flemming Mikkelsen

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

Abstract

The features of developing a counterflow zone (bubble-mode vortex breakdown or vortex explosion) at the center of an intensively swirled flow produced in a liquid-filled cylindrical container with a rotating endwall have been studied. The observation showed that the scenario of developing a bubble-mode breakdown zone with generation of counterflow is the same for cylinders with low or high aspect ratio, and it remains independent of stationary-nonstationary transition boundary for the main vortex flow.

Original language	English
Journal	Thermophysics and Aeromechanics
Volume	21
Issue number	6
Pages (from-to)	767-770
ISSN	0869-8643
Publication status	Published - 2014

Bibliographical note

Research was financially supported by the Russian Science Foundation (Project No. 14-29-00093).

Keywords

Confined vortex flow
Nonstationary vortex breakdown
Counterflow
Digital tracer visualization

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title = "Stagnation zone formation on the axis of a closed vortex flow",

abstract = "The features of developing a counterflow zone (bubble-mode vortex breakdown or vortex explosion) at the center of an intensively swirled flow produced in a liquid-filled cylindrical container with a rotating endwall have been studied. The observation showed that the scenario of developing a bubble-mode breakdown zone with generation of counterflow is the same for cylinders with low or high aspect ratio, and it remains independent of stationary-nonstationary transition boundary for the main vortex flow.",

keywords = "Confined vortex flow, Nonstationary vortex breakdown, Counterflow, Digital tracer visualization",

author = "Naumov, {I. V.} and Valery Okulov and Mikkelsen, {Robert Flemming}",

note = "Research was financially supported by the Russian Science Foundation (Project No. 14-29-00093).",

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language = "English",

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journal = "Thermophysics and Aeromechanics",

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T1 - Stagnation zone formation on the axis of a closed vortex flow

AU - Naumov, I. V.

AU - Okulov, Valery

AU - Mikkelsen, Robert Flemming

N1 - Research was financially supported by the Russian Science Foundation (Project No. 14-29-00093).

PY - 2014

Y1 - 2014

N2 - The features of developing a counterflow zone (bubble-mode vortex breakdown or vortex explosion) at the center of an intensively swirled flow produced in a liquid-filled cylindrical container with a rotating endwall have been studied. The observation showed that the scenario of developing a bubble-mode breakdown zone with generation of counterflow is the same for cylinders with low or high aspect ratio, and it remains independent of stationary-nonstationary transition boundary for the main vortex flow.

AB - The features of developing a counterflow zone (bubble-mode vortex breakdown or vortex explosion) at the center of an intensively swirled flow produced in a liquid-filled cylindrical container with a rotating endwall have been studied. The observation showed that the scenario of developing a bubble-mode breakdown zone with generation of counterflow is the same for cylinders with low or high aspect ratio, and it remains independent of stationary-nonstationary transition boundary for the main vortex flow.

KW - Confined vortex flow

KW - Nonstationary vortex breakdown

KW - Counterflow

KW - Digital tracer visualization

M3 - Journal article

VL - 21

SP - 767

EP - 770

JO - Thermophysics and Aeromechanics

JF - Thermophysics and Aeromechanics

SN - 0869-8643

IS - 6

ER -