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Numerical Simulation of Deposition of Fine Particles on Building Internal Surfaces


BESSAS Bouchra and ELHAMDANI Sakina


Vol. 20  No. 11  pp. 39-45


The deposition of fine particles in closed spaces has become more and more alarming, especially if we associate the theory of the capture of nonmetric viruses by pollutants. The certainty associated with the suspension of particles used to pose a serious risk to those who suffer from respiratory and cardiac diseases. Unfortunately, today, the deposit represents a threat of coronavirus contamination. This study aims to present a numerical simulation of the deposition of fine particles on the internal surfaces of buildings. It is a continuation of an experimental study that was carried out in 2007 on a 125-litre test chamber that was built to evaluate the particle loss rate coefficients of 0.35, 0.53, 0.7, 1 and 2 ?m on the coatings commonly found in buildings, and under three air flow intensities. However, this numerical simulation presents the deposition of particles at two speeds 0.52 and 1.53 m/s, and in the presence of a propeller configured at three different rotational speeds, 1044, 1278 and 2000 rpm. The numerical results agreed with the experimental results which showed that the particle deposition clearly increases with the speed of the airflow near the walls. The results are presented through the calculation code ANSYSFLUENT 2020 R2.


Input here the part of 4-5 keywords., Air pollution, Dispersion, fine particle, velocity, FLUENT, CFD.