국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Development of a System for Prediction of Boundary-Layer Transition
저자	Toshiyuki NOMURA
Keyword	Boundary-Layer Transition; Navier-Stokes Code; PSE Code; eN-Method Code; Swept Cylinder; Oblique TS Wave; Crossflow Disturbance
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr0001397t.pdf?id=NALTR0001397T
보고서번호	NAL TR-1397T
발행년도	2000.01
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	A system for prediction of boundary-layer transition is developed which consists of the Navier-Stokes code, two kinds of codes based on the linear parabolized stability equations (PSE), and the eN-method code. The prediction system is formulated in generalized curvilinear coordinates, which makes the system applicable to practical configurations. The system is used to predict the transition of the boundary layer of an infinite swept cylinder placed in a supersonic flow. The results obtained validate the system and clarify the effect of the nonparallelism of the boundary layer on an oblique TS wave. Furthermore, the characteristics of the PSE codes such as transients and oscillations are found through the analysis of a crossflow disturbance.