Non Newtonian Flows
Mostrando 13-17 de 17 artigos, teses e dissertações.
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13. CARACTERIZAÇÃO DO ESCOAMENTO DE LÍQUIDOS VISCOELÁSTICOS NO PROCESSO DE REVESTIMENTO POR ROTAÇÃO DIRETA / FILM - SPLITTING FLOWS OF VISCOELASTIC LIQUIDS VISUALIZATION
Roll coating is a common method in the manufacture of a wide variety of products. It is used to apply a thin liquid layer to a continuous flexible substrate. At low speeds, the flow is two-dimensional and steady; as the roll speed is raised, the two-dimensional flow is unstable and is replaced by a steady three-dimensional flow, which results in more or less
Publicado em: 2005
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14. CONVECÇÃO FORÇADA EM ESCOAMENTOS LAMINARES DE LÍQUIDOS VISCOPLÁSTICOS EM TUBOS E ESPAÇOS ANULARES / FORCED CONVECTION IN LAMINAR FLOWS OF VISCOPLASTIC LIQUIDS THROUGH TUBES AND ANNULI
Non-Newtonian fluids flow are very common in industrial processes, so it is important to know both the effect of the process on the fluid and vice-versa. Non-Newtonian Fluids exhibit complex mechanical behavior not found in Newtonian fluids, such as shear-rate-dependent viscosity and non-zero Yield stress. Nowadays there is a lack of understanding in the lit
Publicado em: 2004
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15. Analysis and implementation of non-Newtonian models in FreeFlow-2D system. / Análise e implementação de modelos não newtonianos no sistema FreeFlow-2D
This work presents an extention of the Freeflow-2D system to non-Newtonian free surface flows. The governing equations are solved by the finite difference method on a staggered grid. Marker particles are used to describe the fluid providing the location and the visualization of the free surface. The methodology employed is based on the GENSMAC method. The fl
Publicado em: 2002
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16. LIQUID DISPLACEMENT OF IMISCIBLE FLUIDS IN TUBES: CAPILLARITY, INERCIA, VISCOSITY RATIO AND RHEOLOGICAL PROPERTY EFFECTS / DESLOCAMENTO DE FLUIDOS IMISCÍVEIS EM TUBOS: EFEITO DE CAPILARIDADE, INÉRCIA, RAZ ÃO DE VISCOSIDADES E PROPRIEDADES REOL OGICAS
There are many important processes in industry that use liquid displacement of imiscible fluids in tubes. Some practical applications include enhanced oil recovery, ce- mentation of drilling wells and coating of internal surfaces of the tubes. For a good understanding of these problems, it is extremely important to study the effect of cap-illarity,inertia an
Publicado em: 2002
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17. Modelagem matematica e simulação dinamica de trocadores de calor de placas para o resfriamento de sucos de laranja natural e concentrado
The plate heat exchangers are widely used in the food industry for many processes that involve thermal treatments such as pasteurization, sterilization, cooling and heating of fluids. The prediction of the outlet fluid temperature transient behavior as a function of the of the operational conditions for a thermal treatment in heat exchangers, has fundamental
Publicado em: 2000