System Of Conservation Laws
Mostrando 1-12 de 18 artigos, teses e dissertações.
-
1. Effects of gas types and models on optimized gas fuelling station reservoir's pressure
There are similar algorithms and infrastructure for storing gas fuels at CNG (Compressed Natural Gas) and CHG (Compressed Hydrogen Gas) fuelling stations. In these stations, the fuels are usually stored in the cascade storage system to utilize the stations more efficiently. The cascade storage system generally divides into three reservoirs, commonly termed l
Braz. J. Chem. Eng.. Publicado em: 2013-06
-
2. Problemas de Riemann para um Sistema Simétrico de Duas Leis de Conservação / Riemann Problems for a Symmetrical System of Two Conservation Laws
Nesta dissertação determinamos as soluções do problema de Riemann para um sistema de duas leis de conservação escrito na forma normal segundo a classificação de Schaeffer-Shearer, em [9]. Através de mudanças de variáveis, Schaeffer-Shearer determinaram a forma normal para um sistema não linear de duas leis de conservação com um ponto umbílico
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2010
-
3. Riemann Problems for a Symmetrical System of Two Conservation Laws / Problemas de Riemann para um Sistema Simétrico de Duas Leis de Conservação
In this dissertation we describe the solutions to the Riemann problem for a system of two conservation laws written in the normal from according to classification of Schaeffer-Shearer in [9]. Through changes of variables Schaeffer-Shearer determined the normal form for a nonlinear system of two conservation laws with an isolated umbilical point in state spac
Publicado em: 2010
-
4. Desenvolvimento de estratégias de captura de descontinuidades para leis de conservação e problemas relacionados em dinâmica de fluídos / Development of strategies to capture discontinuities for conservation laws and related problems in fluid dynamics
Esta dissertação trata da solução numérica de problemas em dinâmica dos fluidos usando dois novos esquemas upwind de alta resolução, denominados FDPUS-C1 (Five-Degree Polynomial Upwind Scheme of C POT. 1Class) e SDPUS-C1 (Six-Degree Polynomial Upwind Scheme of C POT.1Class), para a discretização de termos convectivos lineares e não-lineares. Os es
Publicado em: 2010
-
5. Modelagem e controle de microturbina a gás do tipo split-shaft. / Modeling and control of slip-shaft gas microturbine.
The objective of the present work is the development of the model of a split-shaft micro gas turbine with feed back control system. A bibliographical review of the works on control of gas turbines indicated that there are very few works dealing this type of gas turbines. The model was developed starting from the basic geometry of the turbine and applying the
Publicado em: 2010
-
6. Management councils of the conservation units / Conselhos gestores de unidades de conservação
This work is on Conservation Units aiming to study the technical and legal nature of the Management councils of the environmentally protected areas in Brazil. The objective was to analyze the legislation that established them, their current nature, composition and functioning and make propositions for their management.. A literature review on conservation bi
Publicado em: 2008
-
7. Solução numérica em jatos de líquidos metaestáveis com evaporação rápida. / Numerical solution in jet of liquid superheat with rapid evaporation.
Este trabalho estuda o fenômeno de evaporação rápida em jatos de líquidos superaquecidos ou metaestáveis numa região 2D. O fenômeno se inicia, neste caso, quando um jato na fase líquida a alta temperatura e pressão, emerge de um diminuto bocal projetando-se numa câmara de baixa pressão, inferior à pressão de saturação. Durante a evolução do
Publicado em: 2008
-
8. O sistema harmonizado pode ser utilizado como barreira tÃcnica? : anÃlise dos casos da cachaÃa, da sandÃlia de dedo, de borracha, e dos cortes de frango, salgados e congelados, no perÃodo de 2002 a 2007
The present dissertation has opened a new discussion: technical protections on brazilian products in the international trade, by their classification in the Harmonized Commodity Description and Coding System (HS). It studied the effects, from 2002 to 2007, on three brazilian exported products: cachaÃa as it is in the same HS code than rum; rubber footwear w
Publicado em: 2008
-
9. Ondas de Choques Transicionais Para Modelos Quadráticos de Duas Leis de Conservação / Transitional shocks waves for quadratic models of two conservation laws
Transitional shock waves arises in solution of initial values problems for non linear systems of conservation laws that are not strictly hyperbolic. These waves are discontinuous solutions that posses viscous profile but do not conform to the Lax characteristic criterion, where inequalities between the shock propagation speed and the characteristic speeds mu
Publicado em: 2007
-
10. Transitional shocks waves for quadratic models of two conservation laws / Ondas de Choques Transicionais Para Modelos Quadráticos de Duas Leis de Conservação
Transitional shock waves arises in solution of initial values problems for non linear systems of conservation laws that are not strictly hyperbolic. These waves are discontinuous solutions that posses viscous profile but do not conform to the Lax characteristic criterion, where inequalities between the shock propagation speed and the characteristic speeds mu
Publicado em: 2007
-
11. Methods for transport equations with random data / Metodos para equações do transporte com dados aleatorios
Mathematical models for real-world processes often take the form of systems of artial differential equations. Such models usually involve certain parameters, for example, the coefficients in the differential operator, and the initial and boundary conditions. Usually, all the model parameters are assumed to be known exactly. However, in realistic situations m
Publicado em: 2007
-
12. Ãgua doce no Brasil: razÃes de uma nova polÃtica / Water candy in Brazil:reasons of a new politics
Brazil has new water legislation. This study examines why the 1934 Water Code became inadequate and the reasons that led to the National Water Resources Policy, according to the Law 9433 (January 8, 1997). It is motivated by a central question: does state intervention intend to assure water to actual and future generations, in the amounts and with the qualit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/09/2003