국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Developments and Validations of Fully Coupled CFD and Practical Vortex Transport Method for High-Fidelity Wake Modeling in Fixed and Rotary Wing Applications
저자	Anusonti-Inthra, Phuriwat
Keyword	COMPUTATIONAL FLUID DYNAMICS;; FAR FIELDS;; FLOW DISTRIBUTION;; HOVERING;; NAVIER-STOKES EQUATION;; REYNOLDS EQUATION;; ROTARY WINGS;; VORTICES;; WAKES
URL	http://hdl.handle.net/2060/20100021091
보고서번호	NASA/CR-2010-216697
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	A novel Computational Fluid Dynamics (CFD) coupling framework using a conventional Reynolds-Averaged Navier-Stokes (BANS) solver to resolve the near-body flow field and a Particle-based Vorticity Transport Method (PVTM) to predict the evolution of the far field wake is developed, refined, and evaluated for fixed and rotary wing cases. For the rotary wing case, the RANS/PVTM modules are loosely coupled to a Computational Structural Dynamics (CSD) module that provides blade motion and vehicle trim information. The PVTM module is refined by the addition of vortex diffusion, stretching, and reorientation models as well as an efficient memory model. Results from the coupled framework are compared with several experimental data sets (a fixed-wing wind tunnel test and a rotary-wing hover test).