Compressible And Incompressible Flows
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Numerical investigation of the three-dimensional secondary instabilities in the time-developing compressible mixing layer
Mixing layers are present in very different types of physical situations such as atmospheric flows, aerodynamics and combustion. It is, therefore, a well researched subject, but there are aspects that require further studies. Here the instability of two-and three-dimensional perturbations in the compressible mixing layer was investigated by numerical simulat
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-06
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2. Development and testing of high-resolution upwind schemes and their applications in incompressible free surface flows / Desenvolvimento e teste de esquemas "upwind" de alta resolução e suas aplicações em escoamentos incompressíveis com superfícies livres
Neste trabalho são apresentados os resultados do desenvolvimento e teste de esquemas upwind de alta resolução para o controle da difusão numérica em leis de conservação gerais e problemas em dinâmica dos fluidos. Em particular, são derivados dois novos esquemas: o ALUS (Adaptive Linear Upwind Scheme) e o TOPUS (Third-Order Polynomial Upwind Scheme).
Publicado em: 2009
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3. Numerical analysis of the turbulent coaxial jets / Análise numérica de jatos coaxiais turbulentos
The understanding of the jets behavior is of extreme importance in several practical applications in combustion and propulsion. Therefore, it becomes more and more important the detailed analysis of the parameters that affect the characteristics of this type of flow. This work presents a numerical study of the incompressible turbulent coaxial jets characteri
Publicado em: 2007
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4. Numerical simulations of compressible flows over airfoils.
A computer code was developed from scratch to simulate the flow over the NACA 0012 airfoil at different Reynolds and Mach numbers. The domain was discretized in a structured-grid context. The equations were numerically solved by a finite-volume technique, using three different time-marching schemes. The Euler flow was initially modeled as well as a Reynolds-
Publicado em: 2006
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5. Numerical simulation of two dimensional compressible and incompressible flows
In this article, we make use of a stabilized Finite Element method to solve the complete set of Navier-Stokes equations. The methodology adopted is such that it allows for the use of different sets of variables, particularly the so called conservative and pressure variables. A space-time formulation using a simple augmented SUPG stabilizing term is proposed
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-12
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6. SimulaÃÃo tridimensional de escoamentos compressÃveis e incompressÃveis atravÃs do mÃtodo dos elementos finitos / Three dimensional simulation of compressible and incompressible flows through the finite element method
Muito embora os escoamentos de fluidos incompressÃveis representem um caso particular dos escoamentos de fluidos em seu espectro mais amplo, os mÃtodos numÃricos e a formulaÃÃo matemÃtica para simulaÃÃo de escoamentos compressÃveis e incompressÃveis apresentam particularidades prÃprias, de maneira que, geralmente nÃo à possÃvel abranger ambos o
Publicado em: 2004
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7. Numerical simulation of a rocket motor with chemical reaction flow / Simulação numérica do escoamento em um motor foguete com reação química
This work presents a numerical simulation of the flow field in a propellant rocket engine chamber and exit nozzle using techniques to allow the results to be taken as starting points for designing those propulsive systems. This was done using a finite volume method simulating the different flow regimes which usually take place in those systems. As the flow f
Publicado em: 2000
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8. NON-LOCAL SIMILARITY METHOD WITH BOUNDARY LAYER PROBLEMS THROUGH CROCCO TRANSFORMATION / MÉTODO DE NÃO-SIMILARIDADE LOCAL ATRAVÉS DA TRANSFORMAÇÃO DE CROCCO EM PROBLEMAS DE CAMADA LIMITE
The coordinate trnsformation developed by L. Crocco to obtain the solution of the compressible fluid flows over isotermal flat plates is originally employed in the present work, with the purpose of adding its inherent advantage to the Non-Similarity Method idealized by E. M. Sparrow, in the solution of the incompressible non-similar boundary layers. The Croc
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/04/1981