Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Measurement of the forces on two cylinders side-by-side in bistable flow
Submission Author:
Gustavo Dias , RS
Co-Authors:
Andrei La Rosa, Dolir Varela, Alexandre Balbinot , Sergio Viçosa Möller, Gustavo Dias
Presenter: Gustavo Dias
doi://10.26678/ABCM.COBEM2017.COB17-0361
Abstract
The bistability is a physical phenomenon that occurs when a pair of parallel cylinders spaced in a certain distance are under the action of the flow. There are generated vortexes downstream the cylinders that change the modes creating an additional dynamic charge. This work aims to develop a force measurement system using strain gauges. The methodology was based in the numerical and experimental analysis of the developed load cell. Infinite cylinders with p/d ratio of 1,26 were used on the test benches and submitted to the air flow. The steps of conditioning and acquisition of signal were made and the results of mechanical deformation showed convergence between numerical and experimental values. However, twelve cases were analyzed with different Reynolds numbers and for 23000 was encountered a force of 2,61cN with torque of 84,95Nmm.
Keywords
cell load, bistability, experimental, force
