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This project aimed to investigate the capability of the STAR CCM+ software when predicting the flow with particles using Lagrangian Particle Tracking and Discrete Element Method. The first part pertained to rectangular channel flow, with ratio between height of the channel and particle diameter (2h/Dp ) of 15. It was found out that simulations of particles in a channel come with many diculties. Such as, obtaining accurate pressure drop results using DEM when comparing to DNS simulations including particles within a reasonable computational time. The second part consisted of a simulation of the off-centred mixing tank. As the use of DEM caused numerical issues, another modeling approach was used. Therefore, the Lagrangian Particle Tracking was used. The outcome of the project is the sensitivity study of the forces which can be applied to the particles. The finding was that the Shear Lift force and the Virtual Mass force have a negligible contribution in regards to the particles distribution. In addition to this, it was also discovered that the turbulence model has a large effect on the particles in the near-wall region. Choosing an isotropic turbulence model resulted in clustering of the particles near the wall, therefore an anisotorpic turbulence model needed to be used.

[pt] As três medidas de sobrevivência logo após a ocorrência de desastres ambientais, de acordo com a Cruz Vermelha Internacional, são: o fornecimento de alimentos, medicação e abrigo. O objetivo deste trabalho é propor uma solução sustentável para atender às famílias desabrigadas em desastres ambientais, imediatamente. Para viabilizar o provimento de abrigo num curto espaço de tempo foi desenvolvido um painel de bambu, tipo sanduíche, utilizando-se uma composição de materiais naturais como: bambu e óleo de mamona, e placas de resíduos reciclados, que não são poluentes, têm baixo custo e baixo consumo de energia. Para a montagem dos painéis foram utilizadas placas recicladas nas faces e o núcleo de bambu em estrutura alveolar que é fixado às placas através de adesivo de poliuretano vegetal, à base de óleo de mamona. O comportamento mecânico do painel sanduíche de bambu desenvolvido neste trabalho foi analisado para aplicação em edificações. Este é um estudo pioneiro, não foram encontradas referências no Brasil nem no exterior, nem estudos semelhantes. O resultado deste estudo é um abrigo modular, em que o módulo proposto é o núcleo de uma habitação que poderá ser expandida e se tornar definitiva. O abrigo é também desmontável podendo ser recolhido e transportado para outros lugares onde haja necessidade. / [en] The International Red Cross listed the three relief priorities in Environmental Disasters: food, medicine and shelter. Providing shelter allows quickly returning to normal life, and keeps families connected. Furthermore establishing the routine stimulates the reconstruction of affected areas. This work presents a quick solution aligned to concepts of sustainability, green building and waste recycling, to catch up affected families needs on environmental disasters events. In order to provide shelter in a very short time, a sandwich panel composed of a bamboo honeycomb core was developed, in a new approach of bamboo utilization, and recycled material panels glued with castor oil resin. The material used are natural and non pollutant, recycled, low-carbon, low-cost housing and low energy consumption. A sandwich panel was developed and its mechanical behavior analyzed for building applications. The main objective of this work was developing a resistant material, ecologic, sustainable, using residues, and local, ingenious and natural materials, that must be strong enough to substitute conventional materials and, at the same time economically feasible, to address emergency sheltering. As a result, a modular shelter is proposed, in which the minimum module is like a core house nevertheless it can be expanded turn in a permanent home. The shelter is also portable as it can be collected and transferred to other places, wherever needed.