NDLI: Assessment of Models for Liquid Jet Breakup

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Paul, S. Hutcheson John, W. Chew Rex, B. Thorpe Young, Colin
Copyright Year	2008
Abstract	For many gas turbine architectures a failure modes and effects analysis identifies a potential mode in which failure of an oil transfer pipe could result in oil leakage into the secondary air system. Such an event would result in a complex two-phase interacting flow. The atomisation and transport of the oil within the air system is of interest, but is difficult to predict. Available data for the droplet size resulting from jet breakup in crossflow are limited. A dimensional analysis shows jet breakup in a crossflow to involve many factors. The atomisation process has been shown experimentally to include many physical processes and is still not completely understood. Currently, the most practical method of modelling these breakup processes in sprays is by using a CFD package with a set of sub-models within an Euler-Lagrangian (discrete-droplet) approach. The strengths and weaknesses of each of these sub-models cannot reasonably be tested when used in combination with other approximations to model a spray in crossflow. The purpose of this study was to assess various submodels for liquid breakup with a series of simple test cases.
Sponsorship	International Gas Turbine Institute
Starting Page	1517
Ending Page	1529
Page Count	13
File Format	PDF
ISBN	9780791843147
DOI	10.1115/GT2008-50649
e-ISBN	0791838242
Volume Number	Volume 4: Heat Transfer, Parts A and B
Conference Proceedings	ASME Turbo Expo 2008: Power for Land, Sea, and Air
Language	English
Publisher Date	2008-06-09
Publisher Place	Berlin, Germany
Access Restriction	Subscribed
Subject Keyword	Leakage Approximation Architecture Computational fluid dynamics Sprays Flow (dynamics) Modeling Gas turbines Dimensional analysis Drops Pipes Failure Failure mechanisms
Content Type	Text
Resource Type	Article

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