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2 edition of mechanistic approach to the modelling of the pressure drop in diabatic two-phase flow. found in the catalog.

mechanistic approach to the modelling of the pressure drop in diabatic two-phase flow.

Adeyemo Ayodele Adeniji-Fahsola

mechanistic approach to the modelling of the pressure drop in diabatic two-phase flow.

by Adeyemo Ayodele Adeniji-Fahsola

  • 229 Want to read
  • 17 Currently reading

Published .
Written in English


The Physical Object
Paginationxxiii, [343] leaves
Number of Pages343
ID Numbers
Open LibraryOL14698298M

  Revellin R, Dupont V, Ursenbacher T, Thome J R and Zun I Characterization of diabatic two-phase flows in microchannels: flow parameter results for Ra in a mm channel Int. J. Multiphase Flow 32 Crossref Google Scholar.   A Simple Approach to Characterize Gas-Aqueous Liquid Two-phase Flow Configuration Based on Discrete Solid-Liquid Contact Electrification. Sci. Rep. 5, ; doi: /srep ().Cited by: 3.

Two-Phase Flow Modelling and Experimentation Proceedings of the Second International Symposium on Two-Phase Flow Modelling and Experimentation Rome, ITALY, May, Editors G.P. Celata p. Di Marco R.K. Shah ENEA, Energy Department Department of Energetics Delphi Harrison Thermal Systems, GMFile Size: KB. Two-Phase Pressure Drop Prediction of Holdup and Frictional Pressure Loss in Two Phase Horizontal, Co-Current Flow P.L. Spedding and N.P. Hand Pressure Drop and Dispersion Characteristics of Separated Oil/Water Flow A. Valle and H. Kvandal Loss Measurements and the Interpretation of Pitot Pressures in Two-Phase Vapour-Droplet FlowFile Size: KB.

  Wide use of natural circulation loops operating at low redused pressures generates the real need to develop reliable methods for predicting flow regimes and friction pressure drop for two-phase flows in this region of parameters. Although water–air flows at close-to-atmospheric pressures are the most widely studied subject in the field of two-phase Cited by: 4. Abstract— Two-phase forced convective flow in microchannels is promising for the cooling of integrated circuits. There has been limited research on boiling flow in channels with dimensions below m, in which bubble formation and flow regimes can differ from workdevelopssingle andmulti-.


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Mechanistic approach to the modelling of the pressure drop in diabatic two-phase flow by Adeyemo Ayodele Adeniji-Fahsola Download PDF EPUB FB2

Determine the pressure drop along the well. A mechanistic approach (Ansari et al, to two phase flow modelling in wells was considered. The model proved to be reliable in modelling two phase pressure drops in low temperature wells.

A computer code was designed for the model to speed up the calculation. The traditional approach for two-phase flow prediction was based on the development of an empirical correlation from experimental data. This book presents the recent approach, in which mathematical mechanistic models are developed, based on the physical phenomena, to predict two-phase flow behavior/10(1).

Summary. A comprehensive model is formulated to predict the flow behavior for upward two-phase flow. This model is composed of a model for flow-pattern prediction and a set of independent mechanistic models for predicting such flow characteristics as holdup and pressure drop in bubble, slug, and annular flow.

Adiabatic and diabatic two-phase venting flow in a microchannel a mechanistic description of the flow boiling phenomenon is presented. Two-phase flow pressure drop is.

SUMMARY AND CONCLUSIONS A mixing-length theory model of two-phase pressure drop has been adapted to give a simple calculation method, of the same form as that used for single phase flow, in which flow pattern effects are partially accounted for by: Unified Mechanistic Multiscale Mapping of Two-Phase Flow Patterns in Microchannels Article in Experimental Thermal and Fluid Science (EXP THERM FLUID SCI) –22.

Two Phase Flow Modeling: Summary of Flow Regimes and Pressure Drop Correlations in Reduced and Partial Gravity NASA/CR— January National Aeronautics and Space Administration Glenn Research Center Prepared Cited by: Pressure drop in two-phase flow is a major design variable, governing the pumping power required to transport two-phase fluids and also governing the recirculation rate in natural circulation systems.

The conservation equations for two-phase flow are a subset of those for Multiphase Flow. Lahey, Jr, R T, Shiralkar, B S, and Radcliffe, D W. TWO-PHASE FLOW AND HEAT TRANSFER IN MULTIROD GEOMETRIES: SUBCHANNEL AND PRESSURE DROP MEASUREMENTS IN A NINE-ROD BUNDLE FOR DIABATIC AND ADIABATIC CONDITIONS.

United States: N. p., Web. doi/Cited by: In diabatic annular two-phase flow, e.g. a vertical pipe as shown in Fig. 1, the liquid phase flows partly as a thin liquid film on the heated wall and partly as droplets in the gas liquid film, especially that in the upstream of the dryout point, is sufficiently thin to safely make the following major thin-film assumptions:Cited by: Two-phase flow is commonly encountered in the petroleum industries.

This frequent occurrence presents the challenge of understanding, analyzing, and designing two-phase systems. Because of the complex nature of two-phase flow, the problem was first approached through empirical methods. Recently, the trend has shifted towards the modeling by: 4. Modelling and numerical methods for two-phase flow: Analysis of the two-fluid model and the drift-flux model for numerical calculation of two-phase flow [Munkejord, Svend Tollak] on *FREE* shipping on qualifying offers.

Modelling and numerical methods for two-phase flow: Analysis of the two-fluid model and the drift-flux model for numerical calculation of two-phase flowPrice: $ The complex nature of two-phase flow challenges production engineers with problems of understanding, analyzing, and modeling two-phase-flow systems.

Because of the complex nature of two-phase flow in pipes, the prediction of pressure drop in producing wells was first approached through empirical correlations.

Modelling of two-phase flow in porous media with volume-of-fluid method Bertrand Lagree To cite this version: Bertrand Lagree.

Modelling of two-phase flow in porous media with volume-of-fluid method. Me-chanics [physics]. Université Pierre et Marie Curie - Paris VI, English. ￿NNT: PA￿. ￿tel￿Cited by: 1. flow, subcooled flow with heat transfer, two-phase transfer, and, finally, adiabatic two-phase flow. In addition, choked flow may exist at the exit point.

The two-phase flow region in a capillary tube that has heat transfer to a suc­ tion line has received very little attention in the past. two-phase fluid flow, little has been reported on flow of metallic systems.

The two-phase pressure drop along a tube in general is the summation of losses due to friction, acceleration effects, and hydrostatic head. Two-phase val- ues usually are greater than those experienced in single- phase flows with comparable fluid throughputs.

This graduate text provides a unified treatment of the fundamental principles of two-phase flow and shows how to apply the principles to a variety of homogeneous mixture as well as separated liquid-liquid, gas-solid, liquid-solid, and gas-liquid flow problems, which may be steady or transient, laminar or chapter contains several sample problems, which illustrate 4/5(1).

This is an up-to-date review of recent advances in the study of two-phase flows, with focus on gas-liquid flows, liquid-liquid flows, and particle transport in turbulent flows. The book is divided into several chapters, which after introducing basic concepts lead the reader through a more complex treatment of the subjects.

The present study illustrates new experimental two-phase flow pattern observations together with diabatic boiling and adiabatic two-phase frictional pressure drop results for ammonia (R) flowing inside a mm internal diameter, smooth horizontal stainless steel tube.

The flow pattern observations were made for mass velocities of 50, and kg s(-1) m(-2) and saturation Cited by: Frictional pressure-drop models for steady-state and transient two-phase flow of carbon dioxide.

Frøydis Aakenes. A correct estimation of the frictional pressure-drop is an important part of such a model. A homogenous friction-model, the Friedel Cited by: 7. Two Phase Flow - Pressure Drop - posted in Industrial Professionals: Dear all, I have calculated two phase release rate and now I want to calculate inlet and outlet pressure drop for the given bursting disc.

Does anybody know how to calculate pressure drop for two phase flow? Thanks for your help in advance. KS.vigour of two-phase flow research work. The papers cover a broad spectrum from the experimental investigation of complex fundamental aspects of two-phase flow to the study of practical devices and applications, the modelling of two-phase flow phenomena, and the numerical analysis.the water pressure will decrease close to the atmospheric pressure in the immediate vicinity of the tunnel.

During this pressure drop two-phase flow conditions (combined flow of both water and gases) may develop in the vicinity of the underground opening, as the dissolved gases are exsoluted under the low pressure.

The term exsolution refers.