Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Elements method’s validation in order to determinate soybeans’ final velocity
Submission Author:
Rodolfo Lima , RS
Co-Authors:
Rodolfo Lima, Manuel Osório Binelo, Oleg Khatchatourian, Saul Vione Winik, Ricardo Klein Lorenzoni
Presenter: Manuel Osório Binelo
doi://10.26678/ABCM.COBEM2017.COB17-1215
Abstract
The knowledge of grains' physical properties such as final velocity and dragging coefficient is important in the creation and development of tools used in post-harvesting. Experimental studies and numerical simulations are powerful assets in understanding and better predicting their behavior. This paper has four goals: a) To perform experiments in order to determinate the final fall velocity of soybeans. b) To determinate the dragging coefficient of soybeans. c) To incorporate the effects of grains' air resistance within DEM model. d) To validate DEM model for determination of soybeans' final fall velocity. In order to obtain data about final velocity, an experimental set was used to perform four different experiments using grains in different levels of humidity. The grain projection area was obtained through an image recognition algorithm and dragging coefficient was calculated through parameters measured in a laboratory. DEM was used and validated for simulations of soybeans final velocity determination. The outcomes obtained in the experiments and in the simulation show excellent compliance, even though considering soybeans in the simulations as spheres.
Keywords
Final Velocity, Dragging Coefficient, Discrete element method
