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Acoustic validation of a new code using particle wake aerodynamics and geometrically-exact beam structural dynamics

Published online by Cambridge University Press:  03 February 2016

F. Nitzsche  and
D. G. Opoku
F. Nitzsche
Affiliation:
Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, Canada
D. G. Opoku
Affiliation:
United Technologies Research Center, East Hartford, CT, USA
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Abstract

This paper describes the validation of a new code for prediction both aeroacoustic and aeroelastic behaviour of hingeless rotors. The structural component is based on a non-linear beam element model considering small strains and finite rotations, which uses a mixed variational intrinsic formulation. The aerodynamic component is built on a loworder panel method incorporating a vortex particle free-wake model. The aerodynamic and structural components are combined to form a closely coupled aeroelastic code that solves in the time-domain. The loading and thickness noise terms for the aeroacoustic calculations are calculated from the aerodynamic data using a formulation based on the Ffowcs Williams-Hawkings (FW-H) equation. The code is successfully validated for acoustic signature and BVI predictions using test cases from the HELINOISE program.

Type
Research Article
Information
The Aeronautical Journal , Volume 109 , Issue 1096 , June 2005 , pp. 257 - 267
Copyright
Copyright © Royal Aeronautical Society 2005 

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