Cfd Methods
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. Aeroelasticidade computacional transônica em aerofólios com modelo estrutural não linear / Transonic computational aeroelasticity on airfoils with nonlinear structural model
Aeroelasticidade não linear é uma área multidisciplinar e importante em engenharia aeronáutica e aeroespacial. Aeroelasticidade é o estudo do mecanismo de interação entre os esforços aerodinâmicos e dinâmico-estruturais. Os avanços nas técnicas de CFD se concentram nas aplicações de problemas aerodinâmicos cada vez mais complexos, como os fen�
Publicado em: 2007
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14. Simulation of non-periodics flows using the fourier pseudo-spectral and immersed boundary methods / Simulação de escoamentos não-periódicos utilizando as metodologias pseudo-espectral e da fronteira imersa acopladas
Modern engineering increasingly requires the comprehension of phenomena related to combustion, aeroacustics, turbulence transition, among others. For these purposes the Computational Fluids Dynamics (CFD) requires the used high order methods. One of these methods is the Fourier pseudo-spectral method, that provides an excellent numerical accuracy, and with t
Publicado em: 2007
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15. Simulation of non-periodics flows using the fourier pseudo-spectral and immersed boundary methods / SimulaÃÃo de escoamentos nÃo-periÃdicos utilizando as metodologias pseudo-espectral e da fronteira imersa acopladas
Para compreender fenÃmenos relacionados à combustÃo, aeroacÃstica, transiÃÃo a turbulÃncia entre outros, a DinÃmica de FluÃdos Computacional (CFD) utiliza os mÃtodos de alta ordem. Um dos mais conhecidos à o mÃtodo pseudo-espectral de Fourier, o qual alia: alta ordem de precisÃo na resoluÃÃo das equaÃÃes, com um baixo custo computacional. Es
Publicado em: 2007
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16. Modelagem tridimensional da dispersão de poluentes em rios / A three dimensional model for industrial efluent dispersion in rivers
Estudos têm mostrado que a humanidade enfrentará severa falta de água nas próximas décadas. Muitos esforços têm sido direcionados para o desenvolvimento de novas ferramentas computacionais a fim de se garantir uma melhor utilização dos recursos hídricos. Diversos estudos estão sendo realizados utilizando ferramentas de CFD (Computational Fluid Dyn
Publicado em: 2006
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17. Fluid animation by cellular automata and particles systems / Animação de fluidos via autômatos celulares e sistemas de partículas
The past two decades showed a rapid growing of physically-based modeling of fluids for computer graphics applications. Techniques in the field of Computational Fluid Dynamics (CFD) have been applied for realistic fluid animation for virtual surgery simulators, computer games and visual effects. In this approach, since the equation is solved numerically the n
Publicado em: 2006
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18. Comparison between a centered and a flux difference split schemes using unstructured strategy
Products developed at industries, institutes and research centers are expected to have high level of quality and performance, having a minimum waste, which require efficient and robust tools to numerically simulate stringent project conditions with great reliability. In this context, Computational Fluid Dynamics (CFD) plays an important role and the present
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2005-09
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19. Three-dimensional simulation of gas-liquid in bubble columns / Simulação tridimensional com sistema gas-liquido em colunas de bolhas
Bubble columns are equipments of simple operation, but presents a complex fluidodynamic. Its basic operation consists of the injection of a gas (disperses phase) in the bottom of the column in a liquid medium (continuous phase). As reactors, they are used in a variety of chemical processes, such as Fischer-Tropsch synthesis, oxidation reactions, alkylation r
Publicado em: 2005
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20. On contribution of advanced vortex element methods toward virtual reality of unsteady vortical flows in the new generation of CFD
The purpose of this paper is to explain the attractive applicability of the advanced vortex element methods and their contribution to the beginning of the new generation of CFD, with introduction of epoch-making application of the methods to simulation of unsteady flows around bluff bodies and virtual operation of fluid machinery. The vortex methods have bee
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-12
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21. The evolution of the aerodynamic design tools and transport aircraft wings at Embraer
This paper provides a historical summary of the aerodynamic design of transport aircraft wings during the past 35 years at Empresa Brasileira de Aeronáutica (EMBRAER) and describes, from the application standpoint, the evolution of the theoretical and experimental techniques and tools used. Beginning with the EMB110 Bandeirante and proceeding with the EMB12
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-12
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22. Desenvolvimento de metodo implicito para simulador numerico tridimensional de escoamentos compressiveis inviscidos
The simulation of compressible flows considered inviscid is largely appliable to aeronautics. The development of such simulations using the Garlekin discontinuous method[7,12,16,20], wich presents the good characteristics of fine element and finite volume methods, benefitting from the polynomial interpolation within subdomains and discontinuous across interf
Publicado em: 2004
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23. Numerical solution of the Euler equations for representation of transonic flows over airfoils / Solução numérica das equações de Euler para representação do escoamento transônico em aerofólios
The study of aerodynamic modeling methods for the transonic flow regime is of great importance in aeronautical engineering. Major challenge on the treatment of those flows is on their nonlinear features due to compressibility effects and shock waves (appearance). Such nonlinear effects present a strong influence on aerodynamic performance, as well as they ar
Publicado em: 2003
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24. Solution of aerospace problems using structured and unstructured strategies
Products developed at industries, institutes and research centers are expected to have high level of quality and performance, having a minimum waste, which require efficient and robust tools to numerically simulate stringent project conditions with great reliability. In this context, Computational Fluid Dynamics (CFD) plays an important role and the present
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2001