Evolution of Three Dimensional Fluid Phase Connectivity During Injection

2020 ◽  
Author(s):  
Eliza Ganguly ◽  
Siddharth Misra ◽  
Yaokun Wu
Keyword(s):  
Three Dimensional ◽  
Fluid Phase ◽  
Phase Connectivity

Numerical Analysis on the Performance of the Solid Solar Particle Receiver With the Influence of Aerowindow

2008 ◽  
Author(s):  
Zhuoqi Chen ◽  
Yitung Chen ◽  
Taide Tan
Keyword(s):  
Solid Particle ◽  
Particle Temperature ◽  
Research Work ◽  
Three Dimensional ◽  
Fluid Phase ◽  
Injection Velocity ◽  
Average Particle ◽  
Three Dimensional Model ◽  
Particle Radiation ◽  
Solar Particle

In this research work, a three dimensional model of the solid solar particle receiver (SPR) with the influence of aerowindow is analyzed. The free-falling down particles will form a solid particle curtain and be directly heated up by the reflected concentrating solar energy which passes through the aperture of the cavity. The mass, momentum and energy exchange between the solid particle phase and gas fluid phase are simulated by the two-way coupling Euler-Lagrange method. A discrete ordinate radiative transfer method has been applied to study the coupling of radiative heat transfer and the falling particle curtain. The realizable κ-ε model is used in the investigation of turbulence flow. In order to predict the performance of the SPR, the aerodynamic behavior of the particles and thermal interaction, which include particle-particle radiation, particle-wall radiation, particle-air convection, and air-wall convection are analyzed and demonstrated in this work. All the investigation on the simulation model is focusing on optimizing the performance of the SPR. The parametric studies of the performance of the SPR with aerowindow are investigated under the different working conditions, such as air injection velocity, particle mass flow rate, and the efficiency of the SPR and exit average particle temperature are compared upon these conditions.

Two-Phase Microscopic Heat Transfer Model for Three-Dimensional Stagnation Boundary-Layer Flow in a Porous Medium

2019 ◽  
Vol 142 (2) ◽  
Author(s):  
Ramesh B. Kudenatti ◽  
Shashi Prabha Gogate S.
Keyword(s):  
Boundary Layer ◽  
Porous Medium ◽  
Boundary Layer Flow ◽  
Thermal Boundary Layer ◽  
Solid Phase ◽  
Boundary Layer Equation ◽  
Three Dimensional ◽  
Fluid Phase ◽  
Transfer Model ◽  
Layer Flow

Abstract This work examines the steady three-dimensional forced convective thermal boundary-layer flow of laminar and incompressible fluid in a porous medium. In this analysis, it is assumed that the solid phase and the fluid phase, which is immersed in a porous medium are subjected to local thermal nonequilibrium (LTNE) conditions, which essentially leads to one thermal boundary-layer equation for each phase. Suitable similarity transformations are introduced to reduce the boundary-layer equations into system of nonlinear ordinary differential equations, which are analyzed numerically using an implicit finite difference-based Keller-box method. The numerical results are further confirmed by the asymptotic solution of the same system for large three-dimensionality parameter, and the corresponding results agree well. Our results show that the thickness of boundary layer is always thinner for all permeability parameters tested when compared to the nonporous case. Also, it is noticed that the temperature of solid phase is found to be higher than the corresponding fluid phase for any set of parameters. There is a visible temperature difference in the two phases when the microscopic interphase rate is quite large. The physical hydrodynamics to these parameters is studied in some detail.

Three-dimensional (3D) Ising universality in magnets and critical indices at fluid–fluid phase transition

2011 ◽  
Vol 84 (4) ◽  
pp. 299-307 ◽  
Author(s):  
Z.D. Zhang ◽  
N.H. March
Keyword(s):  
Phase Transition ◽  
Three Dimensional ◽  
Fluid Phase ◽  
Critical Indices

Focal junctions retard lateral movement and disrupt fluid phase connectivity in the plasma membrane

2008 ◽  
Vol 365 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Dina Vind-Kezunovic ◽  
Urszula Wojewodzka ◽  
Robert Gniadecki
Keyword(s):  
Plasma Membrane ◽  
Fluid Phase ◽  
Lateral Movement ◽  
Phase Connectivity

Analysis of LSM-YSZ Composite Cathode Phase Connectivity Using Three-Dimensional Reconstructions

2019 ◽  
Vol 25 (2) ◽  
pp. 2283-2292 ◽  
Author(s):  
James Wilson ◽  
J. Scott Cronin ◽  
Sherri Rukes ◽  
Anh Duong ◽  
Daniel Mumm ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Composite Cathode ◽  
Phase Connectivity

scholarly journals 3D-printed micro bubble column reactor with integrated microsensors for biotechnological applications: From design to evaluation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lasse Jannis Frey ◽  
David Vorländer ◽  
Hendrik Ostsieker ◽  
Detlev Rasch ◽  
Jan-Luca Lohse ◽  
...  
Keyword(s):  
Process Development ◽  
Bubble Column ◽  
Three Dimensional ◽  
Fluid Phase ◽  
Bubble Column Reactor ◽  
Local Flow ◽  
Column Reactor ◽  
Technological Advances ◽  
Micro Bubble ◽  
3D Printed

AbstractWith the technological advances in 3D printing technology, which are associated with ever-increasing printing resolution, additive manufacturing is now increasingly being used for rapid manufacturing of complex devices including microsystems development for laboratory applications. Personalized experimental devices or entire bioreactors of high complexity can be manufactured within few hours from start to finish. This study presents a customized 3D-printed micro bubble column reactor (3D-µBCR), which can be used for the cultivation of microorganisms (e.g., Saccharomyces cerevisiae) and allows online-monitoring of process parameters through integrated microsensor technology. The modular 3D-µBCR achieves rapid homogenization in less than 1 s and high oxygen transfer with kLa values up to 788 h−1 and is able to monitor biomass, pH, and DOT in the fluid phase, as well as CO2 and O2 in the gas phase. By extensive comparison of different reactor designs, the influence of the geometry on the resulting hydrodynamics was investigated. In order to quantify local flow patterns in the fluid, a three-dimensional and transient multiphase Computational Fluid Dynamics model was successfully developed and applied. The presented 3D-µBCR shows enormous potential for experimental parallelization and enables a high level of flexibility in reactor design, which can support versatile process development.

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