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Supercritical (and subcritical) fluid behavior and modeling: drops, streams, shear and mixing layers, jets and sprays

Bellan, J. (2000) Supercritical (and subcritical) fluid behavior and modeling: drops, streams, shear and mixing layers, jets and sprays. Progress in Energy and Combustion Science, 26 (4-6). pp. 329-366. ISSN 0360-1285. http://resolver.caltech.edu/CaltechAUTHORS:20171024-080716513

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Abstract

A critical review of recent investigations in the realm of supercritical (and subcritical) fluid behavior is presented with the goal of obtaining a perspective on the peculiarities of high pressure observations. Experiments with drops, isolated or in groups, streams, shear and mixing layers, jets and sprays are tabulated and discussed as a precursor to forming a conceptual picture of fluid comportment. The physics of fluid behavior in the supercritical and subcritical regimes is discussed, and major differences between the observations in these two regimes are identified and explained. A variety of supercritical fluid models is then examined in the context of drop studies, and salient aspects of fluid behavior are identified. In particular, a model that has been validated with microgravity drop experiments is described and summarized; in this validated model, the differences in subcritical/supercritical comportment are interpreted in terms of lengths scales and it is this difference that is responsible for the traditional Lewis number expression no longer portraying the ratio of heat to mass transfer in supercritical fluids; instead, an effective Lewis number is recommended that gives a realistic estimate of the ratio of these length scales. Furthermore, the application of various fluid models to the description of supercritical fluid in various geometric configurations is discussed for conditions relevant to liquid rocket, Diesel and gas turbine engines. Such preliminary simulations performed with the validated fluid model have already reproduced some specific experimental features of supercritical fluid jet disintegration. Finally, comments are offered regarding future areas of research.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/S0360-1285(00)00008-3DOIArticle
http://www.sciencedirect.com/science/article/pii/S0360128500000083PublisherArticle
https://ntrs.nasa.gov/search.jsp?R=20060034456OrganizationNASA Technical Reports Server
Additional Information:© 2000 Elsevier Ltd. Received 26 October 1999, Revised 31 January 2000, Accepted 31 January 2000, Available online 20 July 2000. This study was conducted at the Jet Propulsion Laboratory and sponsored by the National Aeronautics and Space Administration (NASA), Marshall Space Flight Center under the direction of Mr. Klaus Gross, and Glenn Research Center under the direction of Dr. Daniel Bulzan, by the Air Force Office of Scientific Research under the direction of Dr. Julian Tishkoff and by the Army Research Office under the direction of Dr. David Mann, the latter two under an interagency agreement with NASA. The author would like to thank Dr. Kenneth G. Harstad of the Jet Propulsion Laboratory for numerous enlightening discussions elucidating the physics of supercritical fluids.
Funders:
Funding AgencyGrant Number
NASA/JPLUNSPECIFIED
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Army Research Office (ARO)UNSPECIFIED
Subject Keywords:Supercritical fluids; Fluid behavior at high pressure; Microgravity drop experiments
Record Number:CaltechAUTHORS:20171024-080716513
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20171024-080716513
Official Citation:J. Bellan, Supercritical (and subcritical) fluid behavior and modeling: drops, streams, shear and mixing layers, jets and sprays, In Progress in Energy and Combustion Science, Volume 26, Issues 4–6, 2000, Pages 329-366, ISSN 0360-1285, https://doi.org/10.1016/S0360-1285(00)00008-3. (http://www.sciencedirect.com/science/article/pii/S0360128500000083)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:82609
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Oct 2017 20:20
Last Modified:25 Oct 2017 21:10

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