Project Title:

Zonal Method for Modeling Powered-Lift Aircraft Flow Fields

02.11-8060
Zonal Method for Modeling Powered-Lift Aircraft
	Flow Fields
Amtec Engineering, Inc.
3055 112th Ave NE #208
Bellevue, WA 98004
Donald W. Roberts  (206-827-3304)
ARC -- NAS2-12801

Abstract:

	 The need exists for a cost-effective three-dimensional flow analysis tool for modeling
the complex flow fields of powered-lift aircraft. This effort addressed the development
of a zonal method that couples a three-dimensional Navier-Stokes code to a potential
flow code based on panel methodology. The Navier-Stokes code is limited to viscous-dominated
zones such as impinging jets, ground vortices, separated flows, vectored nozzles,
etc. The potential flow code models the inviscid regions. Phase I resulted in a successful
coupling procedure. The results indicated that the interzone boundary placement influences
the overall convergence rate and that zonal solutions should be converged simultaneously
with the boundary conditions as opposed to converging these solutions to a low level
during each coupling iteration.

Potential Commercial Application:

Potential Commercial Application: The results of this work could be applied by aircraft
companies to design and evaluate powered-lift aircraft concepts.