Kajian Numerik Pengaruh Push dan Pull Velocity terhadap Pola Aliran Pada Downward Push-Pull Air Curtain

Abstract

Transmission of COVID-19 is still increasing in the world, such as in China and
Indonesia. One of the reasons for the increasing number of positive cases of COVID-19 is
the occurrence of transmission from industrial clusters, the implementation of a minimum
social distancing of 1 to 2 meters between workers is difficult to do. This is due to limitations
in layout, area, and industrial work systems. Thus, a system is needed to protect industrial
workers from potential exposure to COVID-19. One technology that has high potential to be
applied is air curtain. From these problems, this research will carry out an analysis of the
optimum push-pull discharge and air velocity, and the regime map for downward push-pull
air curtain, the method used to carry out the analysis is Computional Fluid Dynamics (CFD)
where the stages of the CFD process are preprocessing, processing, postprocessing. The
software used to complete this final project is SALOME for the preprocessing,, OpenFOAM
for the processing, and for the postprocessing stage using ParaView. From the simulation
results that have been carried out, the results show that at a nozzle blow speed of 6,24 m/s,
with a suction nozzle speed of 37,44 m/s, these are the optimum blow speed and suction nozzle
values and are able to withstand droplet dispersion.