Submitted by Setor de Tratamento da Informa??o - BC/PUCRS (tede2@pucrs.br) on 2016-12-06T16:20:59Z No. of bitstreams: 1 DIS_FELIPE_NORNBERG_SCHUCH_COMPLETO.pdf: 1906760 bytes, checksum: 0cbecd09eb2ec152ab66879b383df442 (MD5) / Made available in DSpace on 2016-12-06T16:20:59Z (GMT). No. of bitstreams: 1 DIS_FELIPE_NORNBERG_SCHUCH_COMPLETO.pdf: 1906760 bytes, checksum: 0cbecd09eb2ec152ab66879b383df442 (MD5) Previous issue date: 2016-03-31 / The studies on transport mechanics and sediment deposition in bed slope channels has rapidly increased over the last decade, this is associated with the fact that they play a fundamental role on the formation of hydrocarbon reservoirs. This work aims to investigate, through direct numerical simulation, the plunge phenomena dynamics when a heavier density fluid, full of particles, flows into a lower density environment. Simulations were carried out with Incompact3d, a code based on a Boussinesq system for incompressible fluids was utilized. The channel?s entrance sediment concentration and flow rate influence on the plunge point and deposition profiles were investigated. Results are compared with theoretical models and physical experiments. / O estudo dos mecanismos de transporte e deposi??o dos sedimentos em canal ganhou destaque nas ?ltimas d?cadas, j? que antigos dep?sitos sedimentares no leito do mar formam importantes reservat?rios de hidrocarbonetos. A inten??o desta pesquisa ? investigar, atrav?s de simula??o num?rica direta, a din?mica do fen?meno de mergulho que ocorre quando um escoamento carregado de part?culas em suspens?o adentra em um ambiente de menor densidade. Para tanto, utiliza-se o c?digo computacional Incompact3d, baseado na solu??o da equa??o de Boussinesq para fluidos incompress?veis. ? investigada a influ?ncia da vaz?o e concentra??o de sedimentos na entrada do canal sobre o ponto de mergulho e perfis de deposi??o, e os resultados s?o comparados com modelos te?ricos e experimentos f?sicos.