국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Reynolds-Averaged Navier-Stokes Studies of Low Reynolds Number Effects on the Losses in a Low Pressure Turbine
저자	Daniel J. Dorney
Keyword	Turbomachinery; Low-pressure turbine; Turbulence modeling; Transition
URL	http://gltrs.grc.nasa.gov/reports/1996/CR-198534.pdf
보고서번호	NASA CR-198534
발행년도	1996
출처	NASA Glenn Research Center
ABSTRACT	Experimental data from jet-engine tests have indicated that unsteady blade-row interaction effects can have a significant impact on the efficiency of low-pressure turbine stages. Measured turbine efficiencies at takeoff can be as much as two points higher than those at cruise conditions. Preliminary studies indicate that Reynolds number effects may contribute to the lower efficiencies at cruise conditions. In the current study, numerical experiments have been performed to quantify the Reynolds number dependence of unsteady wake/separation bubble interaction on the performance of a low-pressure turbine.