Tese: Persistence of straining in the four-roll mill flow
Aluno(a) : João Pedro Bezerra da CunhaOrientador(a): Paulo R. de Souza Mendes
Área de Concentração: Termociências
Data: 07/05/2021
Link para tese/dissertação: https://doi.org/10.17771/PUCRio.acad.53734
Resumo: The motivation of this work consists in the use of four-roll mill in order to increase the phase separation of emulsions water-in-oil (W/O) present in the primary process of oil industry. With the mass and momentum conservation, the continuous phase is modeled by an incompressible, bi-dimensional and isothermal flow. Numerical simulations employing the finite element method were implemented to reveal the influence of the several flow configurations in the material mechanical behavior. From the obtained results, the standard way of classifying the flow in the four-roll mill according to the literature was proved inefficient. This work suggests local flow classifications for each position depending if it is occupied by the continuous or dispersed phase. The effect of the dispersed phase was described by a post-processing scheme. Microelements in shape of vectors were inserted in the domain and their deformations and pathlines were investigated. Thus, the deformation of droplets and their respective influences in the emulsion instability were analyzed.