Eventos Anais de eventos
CONEM 2022
XI Congresso Nacional de Engenharia Mecânica - CONEM 2022
MODELING AND ANALYSIS OF A NEW STIR GEOMETRY USING MULTIBODY DYNAMICS AND MOVING PARTICLE SIMULATION
Submission Author:
Ednardo Oliveira Barbosa , CE
Co-Authors:
Ednardo Oliveira Barbosa, Walter Jesus Paucar Casas, Victor Gualberto
Presenter: Ednardo Oliveira Barbosa
doi://10.26678/ABCM.CONEM2022.CON22-0641
Abstract
The present work aims to evaluate the agitation system of a homogenizer constituted by a non-conventional stir agitation geometry in a regular tank with baffles, through the modeling and computational simulation of a parameterized model, allowing the analysis of different geometries and the consequent optimization of time and resources. For the study carried out in this work, the non-conventional stir agitation geometry homogenizer was modeled using a CAD program; then, RecurDynTM, a multibody system program, was used for the dynamic analysis, where together with ParticleWorksTM, a program based on MPS (Moving Particle Simulation Method), enabled the fluid dynamics of agitation to be simulated and the parameters necessary for the evaluation were extracted. The hydrodynamics that occurs within the agitation system is qualitatively measured by the particle velocities, where it was observed that for this work model a large high-speed recirculation zone caused only by the stir geometry, which is noticeably better for particle scattering than other literature when compared. From the power number ratio (Np) vs. the Reynolds number (Re), a curve was graphically generated and from it the amount of energy that would be needed to maintain the flow in a laminar regime is determined, and also how much energy would be needed to reach the turbulent regime; from the qualitative and quantitative comparison of the Np-Re curve in relation to the values obtained from other references, it was noticed that the new model of the agitator system requires less energy to obtain a high value of the Reynolds number. In addition, from the ratio of pumping number (Nq) vs. the Reynolds number (Ne), the corresponding curve was obtained, observing that the behavior of the present model has a low pumping ratio, that is, a low level of agitation caused by its large geometry, proving the expected result.
Keywords
non-conventional geometry, moving particle simulation method, fluid dynamics, power number, pumping number
