Large Eddy Simulation study on the structure of turbulent flow in a complex city

IC Tolias, N Koutsourakis, D Hertwig… - Journal of Wind …, 2018 - Elsevier
Abstract Large Eddy Simulation (LES) of atmospheric flows has become an increasingly
popular modelling approach within the last years, as it has the potential to provide deeper …

Evaluation of different disinfection calculation methods using CFD

BA Wols, J Hofman, WSJ Uijttewaal, LC Rietveld… - … Modelling & Software, 2010 - Elsevier
Computational Fluid Dynamics combined with a particle tracking technique provides
valuable information concerning residence times and contact times in chemical reactors. In …

Inverse identification of unknown finite-duration air pollutant release from a point source in urban environment

IV Kovalets, GC Efthimiou, S Andronopoulos… - Atmospheric …, 2018 - Elsevier
In this work, we present an inverse computational method for the identification of the
location, start time, duration and quantity of emitted substance of an unknown air pollution …

An improved CFD model for vented deflagration simulations–Analysis of a medium-scale hydrogen experiment

IC Tolias, AG Venetsanos - International Journal of Hydrogen Energy, 2018 - Elsevier
Hydrogen is a promising alternative fuel which is expected to gain a significant portion of the
energy market in the near future. However, it is a flammable gas with significant safety …

CFD modeling of hydrogen deflagration in a tunnel

IC Tolias, AG Venetsanos, N Markatos… - International Journal of …, 2014 - Elsevier
In this paper CFD modeling techniques are used to simulate deflagration in homogenous,
near stoichiometric hydrogen–air mixture in a model of a tunnel. The tunnel is 78.5 m long …

Large Eddy Simulation of low Reynolds number turbulent hydrogen jets-Modelling considerations and comparison with detailed experiments

IC Tolias, AA Kanaev, N Koutsourakis, VY Glotov… - International Journal of …, 2021 - Elsevier
The main objective of this work is to apply Large Eddy Simulation (LES) on hydrogen
subsonic round jets in order to evaluate modelling strategies and to provide guidelines for …

Prediction of the upper tail of concentration distributions of a continuous point source release in urban environments

GC Efthimiou, S Andronopoulos, I Tolias… - Environmental Fluid …, 2016 - Springer
The peak values observed in a measured concentration time series of a dispersing gaseous
pollutant released continuously from a point source in urban environments, and the hazard …

Identification of strength and location of stationary point source of atmospheric pollutant in urban conditions using computational fluid dynamics model

IV Kovalets, S Andronopoulos, AG Venetsanos… - … and Computers in …, 2011 - Elsevier
In this paper a method is presented which allows for estimation of the location and rate of an
unknown point stationary source of passive atmospheric pollutant in a complex urban …

Evaluation of an improved CFD model against nine vented deflagration experiments

IC Tolias, AG Venetsanos, M Kuznetsov… - International Journal of …, 2021 - Elsevier
In the present work, a newly developed CFD deflagration model incorporated into the
ADREA-HF code is evaluated against hydrogen vented deflagrations experiments carried …

LES modelling of hydrogen release and accumulation within a non-ventilated ambient pressure garage using the ADREA-HF CFD code

N Koutsourakis, AG Venetsanos, JG Bartzis - International journal of …, 2012 - Elsevier
Computational Fluid Dynamics (CFD) has already proven to be a powerful tool to study the
hydrogen dispersion and help in the hydrogen safety assessment. In this work, the Large …