Numerical modeling of three-dimensional two-phase gas–liquid flow in the flow field plate of a PEM electrolysis cell

2010 ◽  
Vol 35 (8) ◽  
pp. 3183-3197 ◽  
Author(s):  
Jianhu Nie ◽  
Yitung Chen
Keyword(s):  
Numerical Modeling ◽  
Flow Field ◽  
Liquid Flow ◽  
Three Dimensional ◽  
Electrolysis Cell ◽  
Two Phase ◽  
Field Plate ◽  
Pem Electrolysis ◽  
Gas Liquid Flow

Solid-Liquid Flow-Induced Erosion Prediction in Three-Dimensional Pump Casing

2009 ◽  
Author(s):  
Krishnan V. Pagalthivarthi ◽  
Robert J. Visintainer
Keyword(s):  
Wear Rate ◽  
Flow Field ◽  
Liquid Flow ◽  
Three Dimensional ◽  
Surface Wear ◽  
Two Phase ◽  
Erosion Prediction ◽  
Water Region ◽  
High Erosion Rate ◽  
Solid Liquid

Solid-liquid flow-induced erosion wear prediction in a typical three-dimensional pump casing is dealt with. The two-phase flow field inside the three-dimensional pump casing is simulated using finite element modeling of mono-size particulate flow. Using this flow field and the concentration along the casing surface, wear rate is calculated using empirically determined wear coefficients. Wear rate along the three-dimensional casing surface and the location of high erosion rate are examined. Results show that the wear rate distribution is high near the cut water region (the region separating the total flow from the discharge flow). Wear is non-uniformly distributed and is high at some local spots. Even along other radial sections, wear rate varies significantly from the sides to the centerline of the casing.

Flow Induced Vibration of Equipment Internals in a Two-Phase Gas/Liquid Flow

2017 ◽  
Author(s):  
Philip Diwakar ◽  
Ajay Prakash ◽  
Cyrus Thomas
Keyword(s):  
Flow Field ◽  
Failure Mechanism ◽  
Liquid Flow ◽  
Structural Failure ◽  
Frequency Range ◽  
Complex Flow ◽  
Flow Induced Vibration ◽  
Two Phase ◽  
Structure Interaction ◽  
Gas Liquid Flow

The paper describes the use of Fluid-Structure-Interaction (FSI) to evaluate turning vane blades in an inlet distributor with two-phase gas/liquid flow. A fatigue failure mechanism attributed to flow induced vibration (FIV) resulting from vortex shedding and un-steadiness in the flow field is evaluated. This failure mechanism can be missed in a complex flow field that is assumed to be steady. Natural frequency of the turning vanes was found to be well within the flow induced forcing frequency range, which led to structural failure of the vanes.

Numerical modeling of the influence of bubbles on flow and heat transfer in the descending gas-liquid flow in a pipe

2012 ◽  
Vol 9 (1) ◽  
pp. 131-135
Author(s):  
M.A. Pakhomov
Keyword(s):  
Heat Transfer ◽  
Gas Phase ◽  
Liquid Flow ◽  
Bubble Diameter ◽  
Gas Content ◽  
Two Phase ◽  
Eulerian Description ◽  
Flow And Heat Transfer ◽  
Gas Liquid Flow ◽  
The Mathematical Model

The paper presents the results of modeling the dynamics of flow, friction and heat transfer in a descending gas-liquid flow in the pipe. The mathematical model is based on the use of the Eulerian description for both phases. The effect of a change in the degree of dispersion of the gas phase at the input, flow rate, initial liquid temperature and its friction and heat transfer rate in a two-phase flow. Addition of the gas phase causes an increase in heat transfer and friction on the wall, and these effects become more noticeable with increasing gas content and bubble diameter.

Analysis of Single- and Two-Phase Flows in Turbopump Inducers

1967 ◽  
Vol 89 (4) ◽  
pp. 577-586 ◽  
Author(s):  
P. Cooper
Keyword(s):  
Equation Of State ◽  
Flow Field ◽  
Thermal Effects ◽  
Single Phase ◽  
Fluid Pressure ◽  
Three Dimensional ◽  
Pressure Rise ◽  
Recent Theory ◽  
Two Phase ◽  
Overall Efficiency

A model is developed for analytically determining pump inducer performance in both the single-phase and cavitating flow regimes. An equation of state for vaporizing flow is used in an approximate, three-dimensional analysis of the flow field. The method accounts for losses and yields internal distributions of fluid pressure, velocity, and density together with the resulting overall efficiency and pressure rise. The results of calculated performance of two sample inducers are presented. Comparison with recent theory for fluid thermal effects on suction head requirements is made with the aid of a resulting dimensionless vaporization parameter.

Two-phase gas-liquid flow in rectangular channels

1984 ◽  
Vol 39 (4) ◽  
pp. 751-765 ◽  
Author(s):  
Leon Troniewski ◽  
Roman Ulbrich
Keyword(s):  
Liquid Flow ◽  
Two Phase ◽  
Rectangular Channels ◽  
Gas Liquid Flow
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