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Article
Open AccessA novel particle–particle and particle–wall collision model for superellipsoidal particles
In the framework of computational studies of particulate multiphase flow systems, either dilute or dense, particle–particle as well as particle–wall collisions need to be considered, which in the case of nonsp...
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Article
Open AccessA specific slip length model for the Maxwell slip boundary conditions in the Navier–Stokes solution of flow around a microparticle in the no-slip and slip flow regimes
In the case of microscopic particles, the momentum exchange between the particle and the gas flow starts to deviate from the standard macroscopic particle case, i.e. the no-slip case, with slip flow occurring ...
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Article
A hybrid analytical–numerical model for calculating the maximum elastic force acting on a flow-driven elastic prolate spheroidal particle during its collision with a rigid wall
The paper proposes a hybrid analytical–numerical model for calculating the maximum elastic force acting on a flow-driven prolate spheroidal particle during its collision with a rigid wall. This model assumes t...
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Article
Correction to: Risk Assessment of Infection by Airborne Droplets and Aerosols at Different Levels of Cardiovascular Activity
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Article
Open AccessRisk Assessment of Infection by Airborne Droplets and Aerosols at Different Levels of Cardiovascular Activity
Since end of 2019 the COVID-19 pandemic, caused by the SARS-CoV-2 virus, is threatening humanity. Despite the fact that various scientists across the globe try to shed a light on this new respiratory disease, ...
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Article
Open AccessCan CFD establish a connection to a milder COVID-19 disease in younger people? Aerosol deposition in lungs of different age groups based on Lagrangian particle tracking in turbulent flow
To respond to the ongoing pandemic of SARS-CoV-2, this contribution deals with recently highlighted COVID-19 transmission through respiratory droplets in form of aerosols. Unlike other recent studies that focu...
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Article
Fast boundary-domain integral method for unsteady convection-diffusion equation with variable diffusivity using the modified Helmholtz fundamental solution
In this paper, we develop a boundary-domain integral formulation of the unsteady convection-diffusion equation with variable material properties. The derivation is based on the Green’s second theorem using the...
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On Constitutive Models for the Momentum Transfer to Particles in Fluid-Dominated Two-Phase Flows
This contribution deals with fluid flow-particle interactions in fluid dominated two phase flows. Spherical as well as non-spherical particles in the form of are considered. In the case of ellipsoids, the hydr...
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Article
Numerical Simulations of Wind Induced Particle Contamination in Gypsum Landfill Surroundings
The contribution presents numerical simulation of gypsum particles, lifting from a gypsum landfill. First, particle characteristics are presented, resulting from different technologies of gypsum depositing. Ne...
