Investigation on Characteristics Behavior on Aerosol Spray at Exit Nozzle Based on ANSYS-CFX Simulation

Abstract

A new generation of aerosol technology is expanded rapidly where the research and development are focused on the analysis of pressure involved in the propellants, packaging and ingredients to make the aerosol as a high performance with fine spray product. There are few problems in replacing Volatile Organic Compound (VOC) with water and developing quality fine spray with pressurised aerosol spray. Therefore, this study is focused on developing an internal nozzle by analysed the characteristics of spray using ANSYS-CFX simulation with RNG k-epsilon turbulence model. The analysis were on various pressure supply from 1 bar up to 9 bar, where the n-butane and water are applied as a single liquid phases material. The simulation are based on plain nozzle design where the geometry and physical properties were carefully scale based on actual condition. As a result, it shows the widening of the jet downstream of the gap and increased in Reynolds stresses in the region of high turbulence intensity. Furthermore, the spectra of turbulent kinetic energy were also investigated, indicating that, increased in turbulent kinetic energy is mainly due to an increase in energy of eddies. Consequently, the use of water is acceptable as an alternative to substitute the n-butane liquid phase in producing an aerosol spray product.