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COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Turbulent Structures in a Flow Visualization inside a Conical Diffuser
Submission Author:
José Leandro Cardoso Rivera Vila , DF
Co-Authors:
Lucas Dias, Pedro Henrique Mattos, Pedro Paulo Silva de Almeida, Tiago de Melo, José Leandro Cardoso Rivera Vila
Presenter: José Leandro Cardoso Rivera Vila
doi://10.26678/ABCM.COBEM2017.COB17-2150
Abstract
The flow’s analysis to high Reynolds numbers is performed aiming the determination of both qualitative and quantitative parameters of the wake’s vortex turbulence. Running tests on transparent conical diffusers made of plexiglass, one with a conical geometry, one with a circular and the other with a square inlet. The turbulence in the diffusers was generated by a secondary faster flow, in which was injected to the major flow perpendicularly. For this research both experimental setups and numerical simulations were run with the intent of analyzing how the flow behaves when subjected to such variables; the variables involved were diffuser geometry, flow velocity and the number of Reynolds, tthis last ranging from 4.224x103 to 23.251x103. The experimental tests were conducted on a experimental setup with didactic natures in order to obtain the experimental visualization of the turbulent flow; the numerical simulations were executed in the Ansys 18.1 software by making the use of the CFX analysis system, with the intent of analyzing how the involved conditions influence the flow inside the diffuser.
Keywords
flow, Turbulence, Vortex, visualization, Setup
