All Outputs (28)

Numerical investigation of bubble dynamics and flow boiling heat transfer in cylindrical micro-pin-fin heat exchangers (2024)
Journal Article

Micro-pin-fin evaporators are a promising alternative to multi-microchannel heat sinks for two-phase cooling of high power-density devices. Within pin-fin evaporators, the refrigerant flows through arrays of obstacles in cross-flow and is not restric... Read More about Numerical investigation of bubble dynamics and flow boiling heat transfer in cylindrical micro-pin-fin heat exchangers.

Splitting schemes for coupled differential equations: Block Schur-based approaches & Partial Jacobi approximation (2024)
Journal Article

Coupled multi-physics problems are encountered in countless applications and pose significant numerical challenges. In a broad sense, one can categorise the numerical solution strategies for coupled problems into two classes: monolithic approaches an... Read More about Splitting schemes for coupled differential equations: Block Schur-based approaches & Partial Jacobi approximation.

Electrochemical transport modelling and open-source simulation of pore-scale solid–liquid systems (2023)
Journal Article

The modelling of electrokinetic flows is a critical aspect spanning many industrial applications and research fields. This has introduced great demand in flexible numerical solvers to describe these flows. The underlying phenomena are microscopic, no... Read More about Electrochemical transport modelling and open-source simulation of pore-scale solid–liquid systems.

Computational framework for complex flow and transport in heterogeneous porous media (2023)
Journal Article

We present a flexible scalable open-source computational framework, named SECUReFoam, based on the finite-volume library OpenFOAM®, for flow and transport problems in highly heterogeneous geological media and other porous materials. The framework com... Read More about Computational framework for complex flow and transport in heterogeneous porous media.

Dynamics of long bubbles propagating through cylindrical micro-pin fin arrays (2023)
Journal Article

The dynamics of two-phase flows confined within complex and non-straight geometries is of interest for a variety of applications such as micro-pin fin evaporators and flow in unsaturated porous media. Despite the propagation of bubbles in straight ch... Read More about Dynamics of long bubbles propagating through cylindrical micro-pin fin arrays.

Modelling the influence of mechanical-ecohydrological feedback on the nonlinear dynamics of peatlands (2023)
Journal Article

Peatlands are complex systems that exhibit nonlinear dynamics due to internal and external feedback mechanisms. However, the feedback of vegetation on peat volume changes that potentially affect peatland dynamics is not well understood. Here, we anal... Read More about Modelling the influence of mechanical-ecohydrological feedback on the nonlinear dynamics of peatlands.

Emergence of non-Fickian transport in truncated pluri-Gaussian permeability fields (2022)
Journal Article

We present a numerical simulation study of advective–diffusive scalar transport in three-dimensional high-contrast discontinuous permeability fields, generated with a truncated pluri-Gaussian geostatistical approach. The numerical experiments are run... Read More about Emergence of non-Fickian transport in truncated pluri-Gaussian permeability fields.

A systematic analysis of the memory term in coarse-grained models: The case of the Markovian approximation (2022)
Journal Article

The systematic development of coarse-grained (CG) models via the Mori–Zwanzig projector operator formalism requires the explicit description of a deterministic drift term, a dissipative memory term and a random fluctuation term. The memory and fluctu... Read More about A systematic analysis of the memory term in coarse-grained models: The case of the Markovian approximation.

Population Balance Models for Particulate Flows in Porous Media: Breakage and Shear-Induced Events (2022)
Journal Article

Transport and particulate processes are ubiquitous in environmental, industrial and biological applications, often involving complex geometries and porous media. In this work we present a general population balance model for particle transport at the... Read More about Population Balance Models for Particulate Flows in Porous Media: Breakage and Shear-Induced Events.

Mathematical Modeling and Pilot Test Validation of Nanoparticles Injection in Heavy Hydrocarbon Reservoirs (2022)
Journal Article

Heavy-oil mobility in reservoir rocks can be improved, using nanotechnology, by reducing the viscosity of the oil and improving the rock wettability to a water-wet condition. Previous pilot studies in Colombian heavy oil fields reported that nanopart... Read More about Mathematical Modeling and Pilot Test Validation of Nanoparticles Injection in Heavy Hydrocarbon Reservoirs.

Liquid film distribution around long gas bubbles propagating in rectangular capillaries (2022)
Journal Article

We present a systematic analysis of the bubble and liquid film dynamics corresponding to the propagation of long, isolated gas bubbles, within rectangular capillary channels of cross-sectional aspect-ratio ranging from 1 to 8. Direct numerical simula... Read More about Liquid film distribution around long gas bubbles propagating in rectangular capillaries.

MPeat—A fully coupled mechanical-ecohydrological model of peatland development (2021)
Journal Article

Mathematical models of long-term peatland development have been produced to analyse peatland behaviour. However, existing models ignore the mechanical processes that have the potential to provide important feedback. Here, we propose a one-dimensional... Read More about MPeat—A fully coupled mechanical-ecohydrological model of peatland development.

Non-Stationary Contaminant Plumes in the Advective-Diffusive Regime (2021)
Journal Article

Porous media with low/moderate regional velocities can exhibit a complex dynamic of contamination plumes, in which advection and molecular diffusion are comparable. In this work, we present a two-dimensional scenario with a constant concentration sou... Read More about Non-Stationary Contaminant Plumes in the Advective-Diffusive Regime.

Heterogeneous Multi-Rate mass transfer models in OPENFOAM® (2020)
Journal Article

© 2020 Elsevier B.V. We implement the Multi-Rate Mass Transfer (MRMT) model for mobile–immobile transport in porous media (Haggerty and Gorelick, 1995; Municchi and Icardi, 2019 [1]) within the open-source finite volume library OPENFOAM® (Foundation,... Read More about Heterogeneous Multi-Rate mass transfer models in OPENFOAM®.

Numerical simulation of crust freezing in processed meat: A fully coupled solid–fluid approach (2020)
Journal Article

© 2020, © 2020 Taylor & Francis Group, LLC. We present a numerical model for the simulation of continuous impingement freezing of processed food products. This model is capable of fully describing the fluid dynamics of the non-isothermal flow field... Read More about Numerical simulation of crust freezing in processed meat: A fully coupled solid–fluid approach.

Probability density function (PDF) models for particle transport in porous media (2020)
Journal Article

© 2020, The Author(s). Mathematical models based on probability density functions (PDF) have been extensively used in hydrology and subsurface flow problems, to describe the uncertainty in porous media properties (e.g., permeability modelled as rando... Read More about Probability density function (PDF) models for particle transport in porous media.

Numerical simulation of droplet impact on wettability-patterned surfaces (2020)
Journal Article

© 2020 American Physical Society. Numerical simulations have unexplored potential in the study of droplet impact on nonuniform wettability surfaces. In this paper, we compare numerical and experimental results to investigate the application potentia... Read More about Numerical simulation of droplet impact on wettability-patterned surfaces.

Macroscopic models for filtration and heterogeneous reactions in porous media (2020)
Journal Article

Derivation of macroscopic models for advection-diffusion processes in the presence of dominant heterogeneous (e.g., surface) reactions using homogenisation theory or volume averaging is often deemed unfeasible (Valdés-Parada et al., 2011; Battiato an... Read More about Macroscopic models for filtration and heterogeneous reactions in porous media.

Computational analysis of transport in three-dimensional heterogeneous materials: An OpenFOAM®-based simulation framework (2020)
Journal Article

© 2020, The Author(s). Porous and heterogeneous materials are found in many applications from composites, membranes, chemical reactors, and other engineered materials to biological matter and natural subsurface structures. In this work we propose an... Read More about Computational analysis of transport in three-dimensional heterogeneous materials: An OpenFOAM®-based simulation framework.

Generalized multirate models for conjugate transfer in heterogeneous materials (2020)
Journal Article

We propose a novel macroscopic model for conjugate heat and mass transfer between a mobile region, where advective transport is significant, and a set of immobile regions where diffusive transport is dominant. Applying a spatial averaging operator to... Read More about Generalized multirate models for conjugate transfer in heterogeneous materials.