KARAKTERISTIK POLA ALIRAN PADA AIRFLOW RDA GOON 528 DAN TWISTED MESSES 24 (CLONE) PADA PERSONAL VAPORIZER DENGAN MENGGUNAKAN STUDI NUMERIK SOFTWARE ANSYS FLUENT 19.2

Abstract

Conventional smoking is a primary need that has been used as a lifestyle for some people. In this digital era, conventional cigarettes have been rivaled by electric cigarettes or Personal Vaporizers, which are now a new trend among smokers. On the personal vaporizer there is a section called the RDA (Rebuildable Drip Atomizer). Each RDA on the market has a different airflow hole geometry. The purpose of this study was to analyze and determine the results of the characteristics of the airflow pattern from the different geometric shapes of the airflow holes of the two RDAs on the flow pattern that occurred. In this study, the difference in the geometric shape of the airflow hole becomes a variation on the results of the flow pattern that will occur. The research method used is a 3-D simulation method at steady conditions using CFD (Computational Fluid Dynamics) software, namely ANSYS FLUENT 19.2. The mesh used is a tetrahedron model (default), the hollow part in it is filled and changed to be fluid. The viscous model used is k-epsilon realizable with a Reynolds Number 1000 variation. The results data analyzed are visual data in the form of Velocity Vector, Velocity Streamlines, Velocity Contour, Pressure Contour and data for calculating Head Loss. The results of the research obtained are the geometric shape of the airflow hole on the RDA GOON 528 can cause a smaller flow velocity and greater pressure and a shorter velocity contour on the side of the inlet area, while in the outlet area the velocity becomes larger and the pressure becomes smaller. This is because the geometric shape of the inlet area of ​​the RDA GOON 528 is larger than that of the RDA Twisted Messes 24. This is the opposite for the RDA Twisted Messes 24.

Keywords: Numerical Simulation, Geometry of airflow, Characteristics of flow patter, RDA.