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Critical Flow Properties of Steam
SPE Latin America Petroleum Engineering Conference, 1990ABSTRACT Understanding the thermodynamic properties of steam at critical flow conditions is important to the design, operation and management of steam distribution network and hence the cost of production in steam-enhanced recovery projects.
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Unsteady Near‐Critical Flows in Microgravity
Annals of the New York Academy of Sciences, 2004Abstract: This paper presents analysis of the different time scales associated with unsteady fluid flow phenomena near the thermodynamical critical point and that are typical for experiments carried out in microgravity. A focus of the paper is modeling the initial stage of convection under low and zero gravity on the basis of the two‐dimensional ...
V I, Polezhaev +2 more
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Powder Metallurgy, 2005
AbstractA innovative, industrially proven design of hopper allows powder mass flow to be achieved, thus improving flow and flow control, and reducing undesirable effects such as segregation.
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AbstractA innovative, industrially proven design of hopper allows powder mass flow to be achieved, thus improving flow and flow control, and reducing undesirable effects such as segregation.
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International Journal of Multiphase Flow, 1980
Abstract An overview of theories of critical flow, and the supporting evidence, is presented. It is argued that there is a diminishing return from increased theoretical complexity and that in many practical situations the problem is not sufficiently well defined to merit an elaborate approach.
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Abstract An overview of theories of critical flow, and the supporting evidence, is presented. It is argued that there is a diminishing return from increased theoretical complexity and that in many practical situations the problem is not sufficiently well defined to merit an elaborate approach.
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Critical threshold in pipe flow transition
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2008This study provides a numerical characterization of the basin of attraction of the laminar Hagen–Poiseuille flow by measuring the minimal amplitude of a perturbation required to trigger transition. For pressure-driven pipe flow, the analysis presented here covers autonomous and impulsive scenarios where either the flow is perturbed with an
Mellibovsky, Fernando, Meseguer, Alvaro
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1983
Starting from the definition of critical flows, the methods used for modeling are summarized. It appears that difficulties arise from the various nature of the laws governing mass, momentum and energy transfers through the interfaces. As a consequence, the flow conditions need to be well specified prior to start any modeling.
M. Giot, A. Fritte
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Starting from the definition of critical flows, the methods used for modeling are summarized. It appears that difficulties arise from the various nature of the laws governing mass, momentum and energy transfers through the interfaces. As a consequence, the flow conditions need to be well specified prior to start any modeling.
M. Giot, A. Fritte
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Miniaturizing free‐flow electrophoresis – a critical review
ELECTROPHORESIS, 2008AbstractFree‐flow electrophoresis (FFE) separation methods have been developed and investigated for around 50 years and have been applied not only to many types of analytes for various biomedical applications, but also for the separation of inorganic and organic substances.
Kohlheyer, D. +3 more
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Transonic Flow Around Optimum Critical Airfoils
SIAM Journal on Applied Mathematics, 1995Summary: Optimum critical nonlifting airfoils that have the highest free stream Mach number \(M_\infty\) for a given thickness ratio \(\delta\) have recently been presented by Schwendeman, Kropinski, and Cole [Z. Angew. Math. Phys. 44, 556-571 (1993)]. The asymptotic shape of these airfoils as \(M_\infty \to 1\) and \(\delta \to 0\) consists of a sonic
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ORIFICE COEFFICIENTS FOR CRITICAL FLOW PROVERS
Proceedings of Fall Meeting of the Society of Petroleum Engineers of AIME, 1964Publication Rights Reserved This paper is to be presented at the 39th Annual Fall Meeting to be held in Houston, Tex., on Oct. 11–14, 1964, and is considered property of the Society of Petroleum Engineers. Permission to publish is hereby restricted to an abstract of not more than 300 words, with no illustrations, unless the paper is ...
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1990
Abstract As an introduction, critical (or choked) single-phase flow is first reviewed briefly. Then, in subsequent sections two-phase flow is treated in an analogous manner. Critical two-phase flow is here only considered for a one-component flow, that is for a liquid and its vapour (for example a steam-water flow). From Chapter 5 eqn (5.
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Abstract As an introduction, critical (or choked) single-phase flow is first reviewed briefly. Then, in subsequent sections two-phase flow is treated in an analogous manner. Critical two-phase flow is here only considered for a one-component flow, that is for a liquid and its vapour (for example a steam-water flow). From Chapter 5 eqn (5.
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