High speed propeller acoustics and aerodynamics - A boundary element approachThe Boundary Element Method (BEM) is applied in this paper to the problems of acoustics and aerodynamics of high speed propellers. The underlying theory is described based on the linearized Ffowcs Williams-Hawkings equation. The surface pressure on the blade is assumed unknown in the aerodynamic problem. It is obtained by solving a singular integral equation. The acoustic problem is then solved by moving the field point inside the fluid medium and evaluating some surface and line integrals. Thus the BEM provides a powerful technique in calculation of high speed propeller aerodynamics and acoustics.
Document ID
19930062807
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Farassat, F. (NASA Langley Research Center Hampton, VA, United States)
Myers, M. K. (George Washington Univ. Hampton, VA, United States)
Dunn, M. H. (Planning Research Corp. Hampton, VA, United States)
Date Acquired
August 16, 2013
Publication Date
October 1, 1989
Subject Category
Aerodynamics
Meeting Information
Meeting: International Symposium on Boundary Element Methods