국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Automatic Tip Vortex Core Profiling for Numerical Flow Simulations of Rotorcraft in Hover
저자	Kao, David L.;; Chaderjian, Neal M.
Keyword	CORES;; CROSS FLOW;; HOVERING;; NAVIER-STOKES EQUATION;; ROTARY WING AIRCRAFT;; SIMULATION;; TRAJECTORIES;; VELOCITY DISTRIBUTION;; VORTICES;; WAKES
URL	http://hdl.handle.net/2060/20100036783
보고서번호	ARC-E-DAA-TN1084
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	An automated approach is presented that extracts visual and quantitative data from vortex cores produced by Navier-Stokes simulations of rotorcraft in hover mode. This approach extracts contiguous rotor tip vortex-core trajectories, cross-flow velocity profiles, and vortex-core diameter variation with wake age (azimuth angle). This automated approach is faster and more accurate than a conventional manual approach. Moreover, this new approach allows for an efficient way to quantitatively compare vortex-core profiles from different flow simulations, e.g., grid resolution studies, and validate computed results with experimental data.