Transonic Airfoils
Mostrando 1-4 de 4 artigos, teses e dissertações.
-
1. Optimization of Airfoils for Minimum Pitching Moment and Compressibility Drag Coefficients
ABSTRACT: This paper concerns a numerical optimization method for designing airfoils based on adjoint method. The goal of present work is to reduce the compressibility drag or pitching moment of transonic airfoils without compromising on the lift coefficient. A new cost function based on this requirement is defined and the corresponding adjoint equations are
J. Aerosp. Technol. Manag.. Publicado em: 2014-12
-
2. Optimization study of airfoil performance using genetic algorithms / Otimização de desempenho de aerofólios supercríticos: uma abordagem baseada em algoritmos genéticos
The objective of present study is analyze the multi-objective optimization applied to transonic airfoils project comparing different ways to define the objective functions. The optimization is evaluated by the genetic algorithm NSGA-II. The results is analyzed using metrics of diversity and optimality for multi-objective problems, which two are proposed. The
Publicado em: 2009
-
3. 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
-
4. 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