Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Effect of helical geometry on flow/pressure fluctuation attenuator device for pulsed flows
Submission Author:
Matheus Campos Vieira , ES , Brazil
Co-Authors:
Matheus Campos Vieira, Gustavo Cordeiro Barreiros, Pedro Bis, João Paulo Barbosa, Ayrton Cavallini Zotelle, Renato Siqueira
Presenter: Matheus Campos Vieira
doi://10.26678/ABCM.COBEM2023.COB2023-1111
Abstract
A solution to minimize oscillations caused by the use of positive displacement pumps is the use of flow/pressure attenuators, also known as flow attenuators. In-line models are widely used due to their geometric characteristics, not depending on gases, suffering less interference from thermodynamic factors, which makes them more efficient in a wide range of operating conditions. The article aims to investigate more efficient attenuator geometries, in particular the helical tubular configuration, in order to minimize pressure and flow oscillations. To evaluate the influence of the parameters, numerical simulations were performed with the Ansys 2023R1 package and the Fluid-Structure Interaction (FSI) approach. The research started from the analysis of two distinct geometries, the attenuators were considered Mooney-rivlin hyperelastic material and the fluid water in laminar regime. The results indicated that the helical configuration presented a flow attenuation of 6.7% and a peak pressure reduction of 9.6%, while the reference geometry presented a flow attenuation of 11.3% and a pressure reduction of 7.3%. The analysis of the differences between the geometries revealed that the helical configuration has greater efficiency for energy dissipation, due to its curvature, which contributed to a decrease in pressure peaks.
Keywords
fluid-structure interaction (FSI), Helical attenuator, Flow Damper, Accumulator, hyperelastic materials
