Hossain Aziz and Rinku Mukherjee
Unsteady Aerodynamics of Multiple Airfoils in Configuration
930 - 941
2010
4
10
International Journal of Aerospace and Mechanical Engineering
https://publications.waset.org/pdf/9645
https://publications.waset.org/vol/46
World Academy of Science, Engineering and Technology
A potential flow model is used to study the unsteady
flow past two airfoils in configuration, each of which is suddenly set
into motion. The airfoil bound vortices are modeled using lumped
vortex elements and the wake behind the airfoil is modeled by discrete
vortices. This consists of solving a steady state flow problem at each
timestep where unsteadiness is incorporated through the “zero normal
flow on a solid surface" boundary condition at every time instant.
Additionally, along with the “zero normal flow on a solid surface"
boundary condition Kelvins condition is used to compute the strength
of the latest wake vortex shed from the trailing edge of the airfoil.
Location of the wake vortices is updated at each timestep to get the
wake shape at each time instant. Results are presented to show the
effect of airfoilairfoil interaction and airfoilwake interaction on the
aerodynamic characteristics of each airfoil.
Open Science Index 46, 2010