Quantifying the Dynamics of Water-CO2 Multiphase Flow in Microfluidic Porous Media Using High-Speed Micro-PIV

2021 ◽  
Author(s):  
Yaofa Li ◽  
Gianluca Blois ◽  
Farzan Kazemifar ◽  
Kenneth Christensen
Keyword(s):  
Porous Media ◽  
Multiphase Flow ◽  
High Speed ◽  
Micro Piv

Quantifying the Dynamics of Water-CO2 Multiphase Flow in Microfluidic Porous Media Using High-Speed Micro-PIV

2020 ◽  
Author(s):  
Yaofa Li ◽  
Gianluca Blois ◽  
Farzan Kazemifar ◽  
Kenneth T. Christensen
Keyword(s):  
Porous Media ◽  
Multiphase Flow ◽  
High Speed ◽  
Flow In Porous Media ◽  
Low Flow ◽  
Scale Model ◽  
Pore Scale ◽  
Micro Piv ◽  
Liquid Co2 ◽  
The Impact

Abstract Multiphase flow in porous media is central to a large range of applications in the energy and environmental sectors, such as enhanced oil recovery, groundwater remediation, and geologic CO2 storage and sequestration (CCS). Herein we present an experimental study of pore-scale flow dynamics of liquid CO2 and water in two-dimensional (2D) heterogeneous porous micromodels employing high-speed microscopic particle image velocimetry (micro-PIV). This novel technique allowed us to spatially and temporally resolve the dynamics of multiphase flow of CO2 and water under reservoir-relevant conditions for varying wettabilities and thus to evaluate the impact of wettability on the observed physics and dynamics. The preliminary results show that multiphase flow of liquid CO2 and water in hydrophilic micromodels is strongly dominated by successive pore-scale burst events, resulting in velocities of two orders of magnitude larger than the bulk velocity. When the surface wettability was altered such that imbibtion takes place, capillarity and instability are significantly suppressed, leading to more compact and axi-symmetric displacement of water by liquid CO2 with generally low flow velocities. To our knowledge, this work represents the first of its kind, and will be useful for advancing our fundamental understanding and facilitating pore-scale model development and validation.

scholarly journals An open-source toolbox for multiphase flow in porous media

2015 ◽  
Vol 187 ◽  
pp. 217-226 ◽  
Author(s):  
P. Horgue ◽  
C. Soulaine ◽  
J. Franc ◽  
R. Guibert ◽  
G. Debenest
Keyword(s):  
Porous Media ◽  
Multiphase Flow ◽  
Open Source ◽  
Flow In Porous Media

The Role of Porous Media in Homogenization of High Pressure Diesel Fuel Spray Combustion

2013 ◽  
Vol 136 (1) ◽  
Author(s):  
Navid Shahangian ◽  
Damon Honnery ◽  
Jamil Ghojel
Keyword(s):  
High Pressure ◽  
Porous Media ◽  
High Speed ◽  
Fuel Spray ◽  
Compression Ignition Engines ◽  
System Pressure ◽  
Novel Approach ◽  
Air Mixing ◽  
The Media

Interest is growing in the benefits of homogeneous charge compression ignition engines. In this paper, we investigate a novel approach to the development of a homogenous charge-like environment through the use of porous media. The primary purpose of the media is to enhance the spread as well as the evaporation process of the high pressure fuel spray to achieve charge homogenization. In this paper, we show through high speed visualizations of both cold and hot spray events, how porous media interactions can give rise to greater fuel air mixing and what role system pressure and temperature plays in further enhancing this process.

Development and Validation of a Three-Dimensional Multiphase Flow CFD Analysis for Journal Bearings in Steam and Heavy Duty Gas Turbines

2012 ◽  
Author(s):  
Stephan Uhkoetter ◽  
Stefan aus der Wiesche ◽  
Michael Kursch ◽  
Christian Beck
Keyword(s):  
Experimental Data ◽  
Multiphase Flow ◽  
Gas Turbines ◽  
High Speed ◽  
Three Dimensional ◽  
Air Entrainment ◽  
Journal Bearings ◽  
Heavy Duty ◽  
Present Contribution ◽  
Two Phase

The traditional method for hydrodynamic journal bearing analysis usually applies the lubrication theory based on the Reynolds equation and suitable empirical modifications to cover turbulence, heat transfer, and cavitation. In cases of complex bearing geometries for steam and heavy-duty gas turbines this approach has its obvious restrictions in regard to detail flow recirculation, mixing, mass balance, and filling level phenomena. These limitations could be circumvented by applying a computational fluid dynamics (CFD) approach resting closer to the fundamental physical laws. The present contribution reports about the state of the art of such a fully three-dimensional multiphase-flow CFD approach including cavitation and air entrainment for high-speed turbo-machinery journal bearings. It has been developed and validated using experimental data. Due to the high ambient shear rates in bearings, the multiphase-flow model for journal bearings requires substantial modifications in comparison to common two-phase flow simulations. Based on experimental data, it is found, that particular cavitation phenomena are essential for the understanding of steam and heavy-duty type gas turbine journal bearings.

Development of a high-speed scanning micro PIV system using a rotating disc

2006 ◽  
Vol 17 (7) ◽  
pp. 1639-1646 ◽  
Author(s):  
K P Angele ◽  
Y Suzuki ◽  
J Miwa ◽  
N Kasagi
Keyword(s):  
High Speed ◽  
Rotating Disc ◽  
Micro Piv

scholarly journals Single layer porous media with entrapped minerals for microscale studies of multiphase flow

Lab on a Chip ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 1094-1104 ◽  
Author(s):  
R. W. Liefferink ◽  
A. Naillon ◽  
D. Bonn ◽  
M. Prat ◽  
N. Shahidzadeh
Keyword(s):  
Porous Media ◽  
Multiphase Flow ◽  
Single Layer ◽  
Novel Method

We report a novel method for manufacturing single layer porous media in which minerals can be entrapped in a controlled way in order to study their dissolution and recrystallization.

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