An Eulerian/Lagrangian method for computing blade/vortex impingementA combined Eulerian/Lagrangian approach to calculating helicopter rotor flows with concentrated vortices is described. The method computes a general evolving vorticity distribution without any significant numerical diffusion. Concentrated vortices can be accurately propagated over long distances on relatively coarse grids with cores only several grid cells wide. The method is demonstrated for a blade/vortex impingement case in 2D and 3D where a vortex is cut by a rotor blade, and the results are compared to previous 2D calculations involving a fifth-order Navier-Stokes solver on a finer grid.
Document ID
19920064328
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Steinhoff, John (Tennessee, University; Flow Analysis, Inc., Tullahoma, United States)
Senge, Heinrich (Tennessee, University Tullahoma, United States)
Yonghu, Wenren (Tennessee, University; Flow Analysis, Inc., Tullahoma, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Aerodynamics
Meeting Information
Meeting: AHS International Specialists'' Meeting on Rotorcraft Basic Research