Publicação

Evaluation of nacelle drag using Computational Fluid Dynamics

Detalhes bibliográficos
Resumo:	Abstract: Thrust and drag components must be defined and properly accounted in order to estimate aircraft performance, and this hard task is particularty essential for propulsion system where drag components are functions of engine operating conditions. The present work describes a numerical method used to calculate the drag in different nacelles, long and short ducted. Two- and three-dimensional calculations were performed, solving the Reynolds Averaged Navier-Stokes (RANS) equations with a commercial Computational Fluid Dynamics (CFD) code. It is then possible to obtain four drag components: wave, induced, viscous and spurious drag using a far-field formulation. An expression in terms of entropy variations was shown and drag for different nacelle geometries was estimated.
Autores principais:	Trapp,Luis Gustavo
Outros Autores:	Argentieri,Henrique Gustavo
Assunto:	CFD Drag Engine Nacelle Propulsion
Ano:	2010
País:	Brasil
Tipo de documento:	artigo
Tipo de acesso:	acesso aberto
Instituição associada:	IBICT
Idioma:	inglês
Origem:	Oasisbr

Descrição
Resumo:	Abstract: Thrust and drag components must be defined and properly accounted in order to estimate aircraft performance, and this hard task is particularty essential for propulsion system where drag components are functions of engine operating conditions. The present work describes a numerical method used to calculate the drag in different nacelles, long and short ducted. Two- and three-dimensional calculations were performed, solving the Reynolds Averaged Navier-Stokes (RANS) equations with a commercial Computational Fluid Dynamics (CFD) code. It is then possible to obtain four drag components: wave, induced, viscous and spurious drag using a far-field formulation. An expression in terms of entropy variations was shown and drag for different nacelle geometries was estimated.

Não foram encontrados projetos financiados.