关键词: 雷诺数, 涡扇发动机, 数值仿真, 大涵道比, 性能

Abstract:

For assessing the Reynolds number's effect
on a high bypass ratio turbofan,the correction methods such as Wassell were used for
the main component characteristics,and cooperated with a new performance program to simulate
the effects of Reynolds number on engine's performance.
Results show that Reynolds number has grievous effects on the turbofan in high flight and low
Mach number region,the thrust  is declined by near 1.98%,the specific fuel consumption
is  escalated by near 3.04%,the stall lines and operating lines are affected and the stall margin
is  declined as well.

Key words: Reynolds number, turbofan, simulation, high bypass ratio, performance