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Title:Slug Formation and Frequency of Slugging in Gas-Liquid Flows
Author(s):Woods, Bennett David
Doctoral Committee Chair(s):Hanratty, Thomas J.
Department / Program:Chemical Engineering
Discipline:Chemical Engineering
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Engineering, Petroleum
Abstract:When a slug forms, the liquid level in a large length of pipe drops as the slug propagates downstream. Thus two time scales enter the slug frequency analysis: one characterizing wave evolution and one involving liquid buildup. When the Froude number of the stratified flow in a horizontal pipe at the onset of slug flow is less than unity, the frequency is related to the motion of upstream propagating gravity waves associated with the formation of slugs. A stochastic model is used to describe the frequency for supercritical flow conditions for which slugs form from roll wave coalescence far from the inlet, and also for conditions for which slugs are forming very close to the inlet. For stratified downflows in inclined pipes, the flow is supercritical. However, the frequency of slugging is observed to be periodic and equal to the frequency of long wavelength waves that are predicted by linear stability.
Issue Date:1998
Description:200 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1998.
Other Identifier(s):(MiAaPQ)AAI9904625
Date Available in IDEALS:2015-09-25
Date Deposited:1998

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