2 edition of experimental and theoretical analysis of equilibrium annular flows found in the catalog.
experimental and theoretical analysis of equilibrium annular flows
David Garfield Owen
Published
1986
by University of Birmingham in Birmingham
.
Written in
Edition Notes
Thesis (Ph.D.) - University of Birmingham, Dept of Chemical Engineering.
| Statement | by David Garfield Owen. |
| ID Numbers | |
|---|---|
| Open Library | OL13869851M |
The latter exhibits complicated highly nonlinear effect. Despite this, useful information can be obtained from the theoretical analysis. Experimental results on feed acceleration of liquid streams at various feed rates and rotation speeds in a rotating cone have been used to validate the study. Experimental study of liquid film fraction and pressure drop characteristics in vertical countercurrent annular flow. [PWR; BWR].
Fig. 31 Experimental and theoretical mass flow rates of air through the test seals at bar pressure.. 57 Fig. 32 Experimental and theoretical mass flow rates of air through the test seals at bar pressure.. 58 Fig. 33 Experimental and theoretical normalized direct stiffnesses of the test seals at bar pressure. The zonal index (and annular mode) are still the dominant patterns of low frequency variability in these simulations as determined by an EOF analysis, but their dominance is better understood from the statistical perspective of Gerber and Vallis (). Most of the power comes from smaller scale, local projections of individual eddies and wave.
The regime is entered from slug flow by the formation of flooding-type waves (see Flooding and Flow Reversal), and these persist as a characteristic of the regime waves are absent in both slug flow and annular flow but are formed repeatedly in the churn flow regime and transport the liquid upwards (Hewitt et al. and Govan et al. ). The Fluid Dynamics applications include oceanography, multiphase flows, convection, diffusion, heat transfer, rheology, granular materials, viscous flows, porous media flows and astrophysics. The material presented in the book includes recent advances in experimental and computational fluid dynamics and is well-suited to both teaching and research.
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An experimental and theoretical analysis of equilibrium annular flows by David Garfield Owen; 1 edition; First published in An experimental and theoretical analysis of equilibrium annular flows Author: Owen, David Garfield ISNI: Awarding Body: University of Birmingham Current Institution: University of Birmingham Date of Award: Availability of Full Text.
The coupled experimental and theoretical analysis applied to the annular flow of air–water mixtures gives the temperature distribution of the liquid film, droplets and gas along the test section. The thermal interactions between the phases can thus be inferred in terms of properly defined efficiency by: 5.
Theoretical and experimental analysis of annular two phase flow in horizontal pipes for a solar–geothermal system. Doctoral thesis, National University of Mexico (UNAM), pp. 68–82 (in Spanish). Experimental results demonstrated that the flow is proportional to the pump speed.
The deviation between theoretical, approximated flow and experimental flow was less than 4 % and %, respectively. The difference between theoretical and experimental volumetric efficiency was varied from % to % when back pressure changed from 0 to Author: Shu Dong Yang, You Cheng Shi, Xi Wei Pan, Yin Shui Liu.
One of the main objectives of the present work is to extend the range of annular air–water flow data to higher flowrates and pressures. There are data points obtained with the experimental loop. A flow regime map with the data of Cousins and Hewitt ()and the data obtained for the present work is shown in Fig.
A theoretical investigation has been made of core-annular flow: the flow of a high-viscosity liquid core surrounded by a low-viscosity annular liquid layer through a horizontal pipe.
Experimental and theoretical studies of the two-phase flow regimes in a wide microchannel with the height of μ m were performed. The ranges of parameters of the formation of the main flow regimes are determined: jet, bubble, churn, stratified, and annular.
The pressure drop in single-phase and two-phase flows was measured. Steady-state flow is defined as a flow condition under which the pressure at any point in the reservoir remains constant over time. This flow condition prevails when the pressure funnel shown in Fig.
has propagated to a constant-pressure boundary. The constant-pressure boundary might be the edge of an aquifer, or the region surrounding a water injection well.
"An Analysis of Wavy Annular Flow ", Proceedings of the International Conference on Multiphase Systems (ICMS), Ufa, Russia, June(with T.J. Nigmatulin and D.A. Drew). "CFD Analysis of Dispersed Two-Phase Flows", Proceedings of the International Symposium of Multiphase Flow & Transient Phenomena (MFTP), Antalya, Turkey.
flow. Allow the system to come to steady state and record inlet, outlet, and intermediate temperatures of the cold and hot water. Repeat the experiment for at least five different flow rates of hot and cold water while maintaining the same Cmin/Cmax ratio.
Repeat steps with the exchanger in counter-flow configuration. DATA ANALYSIS 1. An experimental and theoretical analysis of equilibrium annular flow. Ph.D. Thesis, University of Birmingham, Birmingham, U.K., Critical heat flux and associated phenomena in forced.
The theoretical model for annular two-phase flow in circular tube, micro-channel or annular gap tube can be found in present literatures such as Fu and Klausner (), Qu and Mudawar (), Su. Secondly, the thermal inlet mixing model must consider the specific flow conditions depending on the main flow direction within the film as well as the one between outer annular channel and pocket.
The novel LEG model is integrated into a comprehensive bearing code. An experimental and theoretical investigation of the aerodynamic mixing pattern of two co-axial confined jets, with special reference to fuel-air mixing in furnaces, was carried out.
Data were obtained for the parameters: mass ratio of the two jets, the annular thickness separating the two jets, the Reynolds number and the degree of swirl or.
A Comparison Between Numerical Predictions and Theoretical and Experimental Results for Laminar Core-Annular Flow Article (PDF Available) in AIChE Journal 60(8) August with Reads.
Experimental Investigation and Theoretical Model for Subcooled Flow Boiling Pressure Drop in Microchannel Heat Sinks Annular Two-Phase Flow Model,” A Source Book for Compact Heat Exchanger Analytical Data, Academic, New York, Supl.
Collier. Yongpan Hu, Leren Tao, Qingpu Li, Lei Li, Theoretical analysis of annular upward flow in vertical narrow channel heated from one side, Advances in Mechanical Engineering, /, 9, 9, (), ().
The transition from bubble/slug type flows to transitional flow was shown to occur at a constant value of We g (based on the actual gas velocity) of about 2, while the transition from frothy slug-annular type flows to fully-developed annular flow was shown to take place at We g = determine the experimental center of pressure, and the theoretical center of pressure for each of the trials performed.
Introduction. Hydrostatic pressure is, the pressure exerted by a fluid at equilibrium due to the force of All procedures for the orifice and free jet flow lab were performed at UAA in the ANSEP building in room the. This volume contains selected papers presented at the 7th International Conference on Theoretical, Applied, Computational and Experimental Mechanics.
The papers come from diverse disciplines, such as aerospace, civil, mechanical, and reliability engineering, physics, and navel architecture.Computational Domain and Boundary Conditions. Based on parameters of experimental conditions from Sha [], the verification model was established to verify the reliability of the numerical simulation geometry of the simulated chamber with high-temperature annular buoyant jets was shown in Figure dimension was 5 m (length) × 5 m (width) × 5 m (height).The HEM assumption was made for two-phase states.
This methodology was used to simulate sCO 2 flow through circular and annular orifices. A detailed comparison between experimental and simulation results shows differences of less than 5% in the mass flow rate and proves the credibility of .
