Influence of outlet geometry on strongly swirling turbulent flow through a circular tube

Journal Article · Fri Dec 15 00:00:00 EST 2006 · Physics of Fluids (1994)

DOI:https://doi.org/10.1063/1.2400075· OSTI ID:20849477

Escudier, M P; Nickson, A K; Poole, R J ^[1]

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1. Department of Engineering (Mechanical Engineering), University of Liverpool, Brownlow Street, Liverpool, Merseyside L69 3GH (United Kingdom)

The results are reported for an extensive series of measurements (using laser Doppler anemometry) of the mean and fluctuating flow fields for swirling turbulent flow downstream of an orifice in a tube. The influence of a concentric outlet contraction is found to be negligible for low 'supercritical' swirl. For high 'subcritical' swirl, the outlet geometry is found to have a significant influence throughout the flow field and, in the case of an eccentric (i.e., offset) outlet, to lead to an asymmetric flow with a distorted core. In no case was the core found to precess or the flow to be periodic.

• OSTI ID: 20849477
• Journal Information: Physics of Fluids (1994), Vol. 18, Issue 12; Other Information: DOI: 10.1063/1.2400075; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-6631
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASYMMETRY
GEOMETRY
LASERS
ORIFICES
PERIODICITY
TUBES
TURBULENT FLOW