Quasi-Steady Vortex Tracking in Rotorcraft CFD on the Cray X1

Author

Lee, YikLoon

Author_Institution

Div. of Aircraft, US Naval Air Warfare Center

fYear

2006

fDate

38869

Firstpage

39

Lastpage

44

Abstract

High-fidelity, far-field and economical blade vortex capturing, tracking and subsequent interaction is one of the most important aerodynamics problems in rotorcraft, particularly for heavy lift. Its solution is also one of the most difficult to obtain. This paper documents the use of multiple helical vortex tracking grids and development of an automated tracking technique to achieve this objective. This technique is tested on the interactional aerodynamics of a generic quad tilt rotor (QTR). This paper also highlights the special issues that arise in the parallelization of an in-house overset CFD code using the one-sided communication model of Co-Array Fortran (CAF) implemented on the Cray XIE

Keywords

Cray computers; FORTRAN; aerodynamics; aerospace computing; blades; computational fluid dynamics; helicopters; parallel programming; tracking; vortices; CFD code parallelization; Co-Array Fortran; Cray X1; automated tracking; blade vortex capturing; interactional aerodynamics; multiple helical vortex tracking grids; one-sided communication model; quad tilt rotor; quasisteady vortex tracking; rotorcraft CFD; Aerodynamics; Aircraft; Blades; Computational fluid dynamics; Computational modeling; Electric shock; Grid computing; History; Rivers; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

HPCMP Users Group Conference, 2006

Conference_Location

Denver, CO

Print_ISBN

0-7695-2797-3

Type

conf

DOI

10.1109/HPCMP-UGC.2006.62

Filename

4134031