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Flow structure characteristics through the AI nozzle with varying design parameters
Milad Khaleghi Kasbi,Reza Alidoost Dafsari,Seung-Hwa Yu,Jeekeun Lee 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Agricultural nozzles such as air-induction nozzles are designed with the purpose of minimizing spray drift and controlling flow behavior such as spray angle and droplet size. To examine unsteady flow behavior inside an AI nozzle, experimental data and numerical analysis are merged in this paper. The mixture approach and the k- RNG turbulent model is used to clarify the effect of geometrical parameter on the flow structure inside the AI nozzle. It has been investigated that the behavior and size of the vortices decreased and became increasingly unstable as the size of the mixing chamber decreased.
Numerical study of Coanda effect with swirl number and design parameters in Airblast nozzle
Milad Khaleghi Kasbi,Reza Alidoost Dafsari,Jupyong Kim,Jeekeun Lee 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Coanda effect consists of the tendency of an airflow jet to adhere to nearby solid boundaries. This common class of phenomena, which may be observed in both fluid and gas, is named the Coanda effect. In this paper, interest in the detailed behavior of Coanda effect in Airblast nozzle. The purpose is to examine the effect of various geometric factors and swirl number on the generation of Coanda effect in Airblast nozzle. It has been discovered that the formation wall-attached jet in an Airblast nozzle is controlled by both the Reynolds number and the swirl number.