Nonequilibrium Stage Model
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Desenvolvimento de modelagens de não equilibrio para caracterização e aplicação em simulação de colunas de destilação complexas / Development of nonequilibrium models for characterization and application in simulation of complex distillation columns
Distillation is, certainly, the most applied process in the separation of liquid mixtures. Although this is a very known unit operation, still nowadays some difficulties persist in the proposal of appropriate distillation schemes. Thus, the objective of this work was to apply more realistic models in the characterization of mixtures and in the simulation of
Publicado em: 2006
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2. Comparison of a reduced order model for packed separation processes and a rigorous nonequilibrium stage model
The large dimensionality of the system of algebraic (and differential) equations of the models for packed distillation columns makes their solution difficult to be achieved. Aiming the solution of this problem, a reduced order model was developed for steady state packed separation processes. The model was developed transforming the differential equations of
Brazilian Journal of Chemical Engineering. Publicado em: 2000-12
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3. Avaliação experimental dos coeficientes de transferencia de massa e calor em uma coluna com pratos perfurados
Due to the relation with the mass, heat and momentum transfer phenomena, capacity and operational characteristics, thermodynamic properties and the wide relationship with other industrial equipment, the study of the separation processes by distillation becomes very complex, in spite of its extensive use in the chemical and petrochemical industries. For this
Publicado em: 2000
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4. Estrategias numericas para solução de modelos de não-equilibrio para absorção gasosa com reações quimicas complexas (regime estacionario e dinamico)
Gas absorption with chemical reactions is a very common industrial separation processo Until now the traditional equilibrium stage model have been the main tools to the design and unsteady state simulations of the gas-liquid contact equipment. The nonequilibrium model based on mass transfers fundamentais presents a more realistic description of the gas-liqui
Publicado em: 2000
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5. Desenvolvimento de modelo de estagios de não equilibrio e proposição de correlações de eficiencia para os processos de destilação convencional e extrativa
Este trabalho tem como objetivo geral a busca de uma metodologia para determinação de eficiências nos processos de destilação, mediante estudo detalhado da influência de parâmetros físicos, térmicos, de transporte e hidráulicos pertencentes aos componentes, às misturas e de detalhes do equipamento de separação. Busca, por outro lado, também, es
Publicado em: 1997
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6. Modelo termodinamico para o aquecimento não-linear, a laser, e suas aplicações ao processamento de materiais
The subject of the computer modeling of the laser processing of materials continues to be highly topical in Materials Science. Basic to such an achievement was to have an well posed proposition to determine the time evolution of the temperature anywhere in the laser heated sample. Though models of such a kind abound in the literature, they are either rather
Publicado em: 1994
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7. Kinetics of self-assembling microtubules: an "inverse problem" in biochemistry.
Experimental time series for a nonequilibrium reaction may in some cases contain sufficient data to determine a unique kinetic model for the reaction by a systematic mathematical analysis. As an example, a kinetic model for the self-assembly of microtubules is derived here from turbidity time series for solutions in which microtubules assemble. The model may