Novel Eulerian Vorticity Transport Wake Module for Rotorcraft Flow Analysis

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911W6-06-C-0026
Agency Tracking Number: A052-065-1036
Amount: $119,765.00
Phase: Phase I
Program: SBIR
Awards Year: 2005
Solicitation Year: 2005
Solicitation Topic Code: A05-065
Solicitation Number: 2005.2
Small Business Information
34 Lexington Avenue, Ewing, NJ, 08618
DUNS: 096857313
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Glen Whitehouse
 Associate
 (609) 538-0444
 glen@continuum-dynamics.com
Business Contact
 Barbara Agans
Title: Administrator
Phone: (609) 538-0444
Email: barbara@continuum-dynamics.com
Research Institution
N/A
Abstract
Accurate rotorcraft performance prediction is essential to both the design and development of rotorcraft, and also the support of flight testing, establishing of safe flight envelopes and analysis of flight operations. While current Lagrangian- and Eulerian-based analysis tools can, in principle, model the complete rotorcraft, in practice these implementations are severely hampered by accuracy limitations broadly attributed to modeling assumptions (for Lagrangian methods) or numerical deficiencies (e.g. excessive numerical diffusion for Eulerian CFD methods using computationally feasible grid scales). Because of these limitations, commonly used design and analysis tools fail to adequately predict the unsteady 3D wakes and load distributions of new rotor and fuselage designs. What has long been needed is an approach that retains the first-principles physical modeling capability offered by Eulerian schemes with the vortex preservation capabilities and low numerical diffusion generally enjoyed by vortex techniques. Enabled by recently developed breakthrough technologies in Eulerian rotor wake modeling that specifically address the critical numerical diffusion issue, the proposed effort will develop a first-principles based Eulerian vorticity transport wake module that when coupled to suitable CFD tools will provide an unprecedented improvement in capturing the true temporal and spatial unsteadiness of the rotor wake using readily available computational resources.

* Information listed above is at the time of submission. *

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