Recommended Methods for Determining the Pressure Drop in Two-phase Flow in Inclined Pipes in the Slug and Annular Flow Regimes PDF Download
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Author: Pou Cheong Hon
Publisher:
ISBN:
Category :
Languages : en
Pages : 190
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Book Description
Author: Pou Cheong Hon
Publisher:
ISBN:
Category :
Languages : en
Pages : 190
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Book Description
Author: Afshin J. Ghajar
Publisher: Springer Nature
ISBN: 3030416267
Category : Science
Languages : en
Pages : 136
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Book Description
This book provides design engineers using gas-liquid two-phase flow in different industrial applications the necessary fundamental understanding of the two-phase flow variables. Two-phase flow literature reports a plethora of correlations for determination of flow patterns, void fraction, two- phase pressure drop and non-boiling heat transfer correlations. However, the validity of a majority of these correlations is restricted over a narrow range of two -phase flow conditions. Consequently, it is quite a challenging task for the end user to select an appropriate correlation/model for the type of two-phase flow under consideration. Selection of a correct correlation also requires some fundamental understanding of the two-phase flow physics and the underlying principles/assumptions/limitations associated with these correlations. Thus, it is of significant interest for a design engineer to have knowledge of the flow patterns and their transitions and their influence on two-phase flow variables. To address some of these issues and facilitate selection of appropriate two-phase flow models, this volume presents a succinct review of the flow patterns, void fraction, pressure drop and non-boiling heat transfer phenomenon and recommend some of the well scrutinized modeling techniques.
Author: Loren S. Bonderson
Publisher:
ISBN:
Category :
Languages : en
Pages : 130
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Book Description
Author: Lixin Cheng
Publisher: Springer Science & Business Media
ISBN: 3319043587
Category : Technology & Engineering
Languages : en
Pages : 215
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Book Description
This volume presents state-of-the-art of reviews in the field of multiphase flow. In focusses on nonlinear aspects of multiphase flow networks as well as visualization experiments. The first chapter presents nonlinear aspects or deterministic chaos issues in the systems of multi-phase reactors. The second chapter reviews two-phase flow dynamics in combination with complex network theory. The third chapter discusses evaporation mechanism in the wick of copper heat pipes. The last chapter investigates numerically the flow dynamics and heat and mass transfer in the laminar and turbulent boundary layer on the flat vertical plate.
Author: Loren Swan Bonderson
Publisher:
ISBN:
Category : Pipelines
Languages : en
Pages :
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Book Description
Author: Braden McDermott
Publisher:
ISBN:
Category :
Languages : en
Pages : 166
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Book Description
Author: Herbert Stanford Isbin
Publisher:
ISBN:
Category : Hydrodynamics
Languages : en
Pages : 100
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Book Description
Author: Peet Mati Sööt
Publisher:
ISBN:
Category : Pipe
Languages : en
Pages : 312
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Book Description
The pressure drop for two-phase liquid-liquid flow is theoretically predicted for each flow regime. Empirical correlations, which are applicable in all flow regimes, are also presented for holdup as well as pressure drop. The experimental study covered bubble and drop flow regimes. The discontinuous phase was injected by nozzle into the vertical, 0.745 inch ID, 40 foot test section. The drop sizes were varied by inserting wire screens downstream of the nozzle and also by varying the nozzle size between .1875 inches and .375 inches OD. Photographs of the dispersions were taken in order to determine average drop diameter. The slip velocity between phases was determined by holding the dispersion in the test section after a run and then draining the sample and measuring the in situ concentration. The average fluid velocity ranged from 5 to 15 feet/second and injection concentrations were as high as 35% by volume. The dispersed phase fluids had Redacted for Privacy viscosities of 1, 9 and 200 centipoise. The pressure drop at a given concentration and size distribution was found to vary inversely with the average drop diameter; also a polydisperse (widely spread distribution) dispersion had a lower pressure drop than the monodisperse one with the same average drop size. An inverse relationship exists between the pressure drop and relative slip velocity. This effect appears to increase directly with the discontinuous phase concentration. The theoretically derived equations predict the pressure drop of bubble flow within a 16% relative standard deviation. Published data were used in evaluating the proposed equations in other regimes. Annular flow pressure drops were predicted within 8. 5% standard deviation and stratified flow within 13%. The empirical correlations for holdup and pressure drop had a standard deviation of approximately 25% when used with data from all flow regimes.
Author: G. Singh
Publisher:
ISBN:
Category : Flow meters
Languages : en
Pages : 10
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Book Description
Author: Peter Griffith
Publisher:
ISBN:
Category : Bubbles
Languages : en
Pages : 50
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Book Description
The annular slug flow regime has been investigated in vertical upflow without heating through the use of an electrical conductivity probe. The Teflon cladding and seals of the probe were found to work to at least 488 deg F. When the inlet velocity was sufficiently high, the quality at transition was found to be a constant for each pressure going from 8.6% at215 psia to 17.6% at 615 psia. No fully developed bubbly flow was observed.
