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COBEM 2019
25th International Congress of Mechanical Engineering
EXPERIMENTAL ANALYSES OF THE AIRFLOW ARROUND PICK-UPS: A QUALITATIVE EVALUATION WITH VISUALIZATION METHODS
Submission Author:
CAIO ROBERTO BOTTER , SP
Co-Authors:
CAIO ROBERTO BOTTER, Odenir de Almeida
Presenter: CAIO ROBERTO BOTTER
doi://10.26678/ABCM.COBEM2019.COB2019-0301
Abstract
This work is focused on the experimental determination of the aerodynamics of two simplified models of pick-ups. One has sharp and flatted edges, and the other has rounded ones. Except this, they are equals. Nevertheless, this study has only a qualitative approach through visualization methods. Further analyses is being performed for the quantitative determination of flow patterns. Here, three methods were considered: A simple Stream Line Visualization, a Smoke Visualization, and Tufts Visualization. Each method was properly chosen to give a different perspective of the airflow over the models, and to compare them. Two wind flow velocities were chosen for the analyses: sixteen and twenty-five meters per second, provided by a blown down opened section wind tunnel. As expected, the results have shown that the flatted model has a higher detachment of the boundary layer, while the rounded one generates a smoother airflow. Further experiments may show that these characteristics will generate a higher drag coefficient to the flatted model. Also, the results for higher speed experiments have shown a more aggressivity in the wind flow, provoking a bigger recirculation zones in the front hood and other areas of the pick-ups.
Keywords
Aerodynamics, pickup, experimental, Flow Visualization
