국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Aeropropulsion Technology (APT) Task 23-Stator Seal Cavity Flow Investigation
저자	N.J. Heidegger, E.J. Hall, and R.A. Delaney
Keyword	Compressor; Seal activity; CFD
URL	http://gltrs.grc.nasa.gov/reports/1996/CR-198504.pdf
보고서번호	NASA CR-198504
발행년도	1996
출처	NASA Glenn Research Center
ABSTRACT	The focus of NASA Contract NAS3-25950 Task 23 was to numerically investigate the flow through an axial compressor inner-banded stator seal cavity. The Allison/NASA developed ADPAC code was used to obtain all flow predictions. Flow through a labyrinth stator seal cavity of a high-speed compressor was modeled by coupling the cavity flow path and the main flow path of the compressor. A grid resolution study was performed to guarantee adequate grid spacing was used. Both unsteady rotor-stator-rotor interactions and steady-state isolated blade calculations were performed with and without the seal cavity present. A parameterized seal cavity study of the high-speed stator seal cavity collected a series of solutions for geometric variations. The parameter list included seal tooth gap, cavity depth, wheel speed, radial mismatch of hub flowpath, axial trench gap, hub corner treatments, and land edge treatments. Solution data presented includes radial and pitchwise distributions of flow variables and particle traces describing the flow character.