A5008597624- Lattice Boltzmann Simulation Studies
- Groundwater flow and contamination studies
- Heat and Mass Transfer in Porous Media
- Aerosol Filtration and Electrostatic Precipitation
- Nanofluid Flow and Heat Transfer
- Membrane Separation Technologies
- Membrane Separation and Gas Transport
- Numerical methods in engineering
- Fluid Dynamics and Thin Films
- Particle Dynamics in Fluid Flows
- Hydrocarbon exploration and reservoir analysis
- Nanomaterials and Printing Technologies
- Granular flow and fluidized beds
- Material Dynamics and Properties
- Zeolite Catalysis and Synthesis
- Hydraulic Fracturing and Reservoir Analysis
- Innovative Microfluidic and Catalytic Techniques Innovation
- Fluid Dynamics and Turbulent Flows
- Nanopore and Nanochannel Transport Studies
- Soil and Unsaturated Flow
- NMR spectroscopy and applications
- CO2 Sequestration and Geologic Interactions
- Fluid Dynamics and Vibration Analysis
- Membrane-based Ion Separation Techniques
- Enhanced Oil Recovery Techniques
Foundation for Research and Technology Hellas
2014-2024
University of Patras
1999-2016
University of Luxembourg
2016
Region of Western Greece
2015
FORTH Institute of Chemical Engineering Sciences
1993-2012
University of Rochester
1986-1989
Abstract The problem of diffusion in pore networks a certain class is considered, and procedure for estimating effective diffusivities formulated. effective‐medium theory used to obtain an conductance the network, which then determine diffusivity starting from first physical principles utilizing observation that network pores uniform satisfies smooth field approximation. Comparison estimated intraparticle with those obtained exact solution transport equation large reveals high accuracy...
Hybrid nanofluids contain more than one type of nanoparticle and have shown improved thermofluidic properties compared to conventional ones that a single nanocomponent. Such hybrid systems been introduced improve further the thermal mass transport nanoparticulate affect multitude applications. The impact second particle on effective conductivity is investigated here using reconstruction configurations prediction efficiency with meshless methods, placing emphasis role aggregation. An...
The binary representation of porous media can provide a direct means for the characterization their internal structure and is becoming progressively fashionable as result rapid development novel, powerful image analysis techniques. In present work we accurate predictions Knudsen intermediate diffusivities based on molecular trajectory computations in three-dimensional pixelized media. main advantage this approach that it avoids resorting to commonly used concepts pore, grain, or fiber...
A two-dimensional two-phase lattice-Boltzmann model is presented and used for the study of interfacial phenomena under static flow conditions. The based on nonideal proposed originally by Swift, Osborn, Yeomans [Phys. Rev. Lett. 75, 830 (1995)] makes it possible to couple a prescribed equation state with pressure tensor at interface excess free-energy density formalism. characteristic feature present that Galilean invariance restored in presence interfaces without sacrificing any merits...
Abstract Monte Carlo computations of transmission probabilities test molecules and the mean-square displacement a large number in finite pore network samples are used to compute effective Knudsen diffusivities two- three-dimensional parallel random structures (consisting two or three mutually perpendicular bundles capillaries), randomly oriented pores. The orientationally averaged diffusivities, which obtained either directly from method indirectly by orientational averaging probability...
The problem of potential flow inside an evaporating liquid line, shaped as infinitely long cylindrical segment lying on a flat surface, is considered and analytical solution obtained for any contact angle in $(0,\ensuremath{\pi})$. In this way, microflow details linear bodies hydrophilic, hydrophobic, strongly hydrophobic substrates can now be obtained. mathematical formulation employs the velocity stream function formulations bipolar coordinates using technique Fourier transform. Both...
In the present paper, structural and flow properties of binary media generated by two-dimensional lattices that follow fractional Brownian motion statistics are studied. A modification midpoint displacement random addition method is employed in order to generate multicell with sizes considerably larger than correlation length medium. Several properties, such as autocorrelation function, surface area, percolation threshold, studied for different values porosity degree correlation. addition,...
A lattice-Boltzmann simulator of two-phase equilibrium and flow is presented applications to interface stability problems are discussed. The based on a model nonideal fluids that allows coexistence two phases single substance at an explicitly defined temperature. set thermodynamically consistent algorithms developed prescribe the densities kinematic viscosities vapor liquid van der Waals fluid also interfacial tension thickness. Flow induced by applying either constant macroscopic pressure...
Abstract A 3-D trajectory analysis of particle deposition in unit cells the constricted-tube type is developed. Creeping newtonian How suspension through assumed, and flow field each cell computed using collocation solution provided by Tilton Payatakes (1984). Particle equations are developed for three-dimensional case, taking into account hydrodynamic forces torques, gravity, London-van der Waals force, double ionic layer force. The one-step approach used to predict rate pattern a arbitrary...
An analytical solution to the problem of potential flow inside an evaporating line is obtained. The shaped as a half-cylinder lying on substrate, and evaporates with either pinned or depinned contact lines. provided through technique separation variables in velocity stream function formulations. Based field calculations, it estimated that coffee-stain phenomenon should be expected even for uniform evaporation flux throughout cylindrical surface, lines remain anchored. A simple expression...
Evaporation of droplets or liquid films lying on a substrate induces internal viscous flow, which affects the transport suspended particles and, thus, final deposit profile in numerous applications. In this work, problem Stokes flow inside two-dimensional droplet, representing cross section an evaporating line flat surface, is considered. The stream function formulation adopted, leading to biharmonic equation bipolar coordinates. A solution closed form obtained for any contact angle...
Purpose: The dynamic mode decomposition (DMD) method is used to provide a reliable forecasting of tumor ablation treatment simulation in real time, which quite needed medical practice. To achieve this, an extended Pennes bioheat model must be employed, taking into account both the water evaporation phenomenon and tissue damage during ablation. Methods: A meshless point collocation solver for numerical solution governing equations. results obtained are by DMD faster than solver. procedure...