국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Computations of Unsteady Aerodynamic Loads Around Oscillating Wings ［Part I Formulation］
저자	Jiro NAKAMICHI
Keyword	Unsteady Aerodynamics; Oscillating Wing; CFD; Finite Difference Method; Dynamic Grid
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr01202.pdf?id=NALTR0001202
보고서번호	NAL TR-1202
발행년도	1993.5
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	which is caused by shock-induced separations on the wing surface.To analyze such non-classical aeroelastic phenomena of aircraft wings which are caused by air viscosity (i.e.,stall flutter,buzz,and buffetting),a computer code was developed which is capable of solving unsteady Navier-Stokes equations around oscillating airfoils/wings.The code is based on the Beam-Warming ADI method combined with a dynamic grid system In Part I,the formulation of unsteady aerodynamics calculation is given and a dynamic grid model is presented.The theory and the finite difference discretization are summarized.In Part II,2D and 3D computed results are given,demonstrating the feasible range of the code.Additional problems are also pointed out which may be incorporated into future computer codes for unsteady aerodynamics around oscillating airfoils/wings.