A New Streamline Method for Evaluating Uncertainty in Small-Scale, Two-Phase Flow Properties

2001 ◽  
Author(s):  
J.J. Hastings ◽  
A.H. Muggeridge ◽  
M.J. Blunt
Keyword(s):  
Two Phase Flow ◽  
Small Scale ◽  
Phase Flow ◽  
Flow Properties ◽  
Two Phase ◽  
Streamline Method

A New Streamline Method for Evaluating Uncertainty in Small-Scale, Two-Phase Flow Properties

SPE Journal ◽  
2003 ◽  
Vol 8 (01) ◽  
pp. 32-40
Author(s):  
J.J. Hastings ◽  
A.H. Muggeridge ◽  
M.J. Blunt
Keyword(s):  
Two Phase Flow ◽  
Small Scale ◽  
Phase Flow ◽  
Flow Properties ◽  
Two Phase ◽  
Streamline Method

Evaluation of Length Scales and Meshing Requirements for Resolving Two-Phase Flow Regime Transitions Using the Level Set Method

2021 ◽  
Author(s):  
Matt Zimmer ◽  
Igor A Bolotnov
Keyword(s):  
Thin Films ◽  
Flow Regime ◽  
Level Set Method ◽  
Level Set ◽  
Two Phase Flow ◽  
Small Scale ◽  
Phase Flow ◽  
Two Phase ◽  
Interface Capturing ◽  
Regime Transitions

Abstract New criteria for fully resolving two-phase flow regime transitions using direct numerical simulation with the level set method for interface capturing are proposed. A series of flows chosen to capture small scale interface phenomena are simulated at different grid refinements. These cases include droplet deformation and breakup in a simple shear field, the thin film around a Taylor bubble, and the rise of a bubble towards a free surface. These cases cover the major small scale phenomena observed in two-phase flows: internal recirculation, interface curvature, interface snapping, flow of liquid in thin films, and drainage/snapping of thin films. The results from these simulations and their associated grid studies were used to develop new meshing requirements for simulation of two-phase flow using interface capturing methods, in particular the level set method. When applicable, the code used in this work, PHASTA, was compared to experiments in order to contribute to the ongoing validation process of the code. Results show that when the solver meets these criteria, with the exception of resolving the nanometer scale liquid film between coalescing bubbles, the code is capable of accurately simulating interface topology changes.

scholarly journals A Connectivity-Based Modeling Approach for Representing Hysteresis in Macroscopic Two-Phase Flow Properties

2014 ◽  
Vol 63 ◽  
pp. 3456-3463 ◽  
Author(s):  
Abdullah Cihan ◽  
Jens Birkholzer ◽  
Luca Trevisan ◽  
Marco Bianchi ◽  
Quanlin Zhou ◽  
...  
Keyword(s):  
Two Phase Flow ◽  
Phase Flow ◽  
Flow Properties ◽  
Two Phase ◽  
Modeling Approach

Modification of Two Phase Flow Properties by Adsorbed Polymers and Gels

1999 ◽  
Author(s):  
Pacelli L.J. Zitha ◽  
Fred J. Vermolen ◽  
Hans Bruining
Keyword(s):  
Two Phase Flow ◽  
Phase Flow ◽  
Flow Properties ◽  
Two Phase ◽  
Adsorbed Polymers

Liquid and Gas-Phase Distributions in a Jet With Phase Change

1988 ◽  
Vol 110 (4a) ◽  
pp. 955-960 ◽  
Author(s):  
Flavio Dobran
Keyword(s):  
Phase Change ◽  
Pressure Distribution ◽  
Total Pressure ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Gas Velocity ◽  
Flow Properties ◽  
Two Phase ◽  
Pipe Length ◽  
Pressure Peak

A two-phase flow high-velocity jet with phase change was studied numerically. The jet is assumed to be created by the two-phase critical flow discharge through a pipe of variable length and attached to a vessel containing the saturated liquid at different stagnation pressures. The jet flow is assumed to be axisymmetric and the modeling of the two-phase flow was accomplished by a nonequilibrium model that accounts for the relative velocity and temperature difference between the phases. The numerical solution of the governing set of balance and conservation equations revealed steep gradients of flow properties in both radial and axial directions. The liquid phase in the jet is shown to remain close to the jet axis, and its velocity increases until it reaches a maximum corresponding to the gas velocity, and thereafter decreases at the same rate as the gas velocity. The effect of decreasing the pipe length is shown to produce a larger disequilibrium in the jet and a double pressure peak in the total pressure distribution. A comparison of the predicted total pressure distribution in the jet with the experimental data of steam–water at different axial locations is demonstrated to be very reasonable.

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