Rubber Roller Angular Velocity Affect an Air Flow of Small Rice Husking Machine using Computational Fluid Dynamic

摘要

This paper aims to investigate the influence of the rubber roller angular velocity of the small three roller rice husking machines in Thailand. This is used to analyze the air flow behavior in rice husk separation domain. The behavior of air in the chamber is investigated using Computational Fluid Dynamic (CFD). Mesh independence is used to find a stable model to analyze. After that, the speed of rubber roller is adjusted to predict a behavior of the air flow rate, velocity inlet and pressure each point of interested. The optimum element size was used for the analysis of 43.1 mm. The speed of rubber roller affected all of the flow rate, speed, and pressure of the air inside the domain when speed of rubber roller increases, all the above variables will be increased. The relation graph will lead to the design of the small rice husking machine.