高速、高负荷跨音速单级风扇设计与试验

DESIGN AND TEST FOR SINGLE STAGE TRANSONIC FAN WITH HIGH SPEED、 HIGH LOAD

本文介绍－高性能单级跨音速风扇的设计与试验结果。该风扇设计压比２．３，设计效率０．８８，具有高切线速度５１０ ｍ／ｓ（相对马赫数达 １．７２）和低展弦比。 在气动设计过程中，为了改善级效率，使用了前缘掠型和任意空间积迭曲线新技术。为了提高气动设计的可靠性，对风扇进行了三维有粘流动计算分析和气动的优化。 试验结果表明：这台风扇性能达到了它的设计目标。设计点压比（２．３）效率为８９．５％，峰值效率达９０．８％，最高压比达２．４９１，喘振裕度超过１１．５％。 这台风扇显示了当今国际上先进风扇水平。高水平性能的取得归功于在高速和高负荷风扇气动设计中准三维和三维粘性设计系统的应用。

This paper presents design and experimental results for a high performance single stage transonic fan with design pressure ratio 2.3 and design efficiency 0.88 at high tip speed 510m/s (relative Mach number reaches 1.72) and low aspect ratio. New techniques of leading edge sweep and any spatial stack curve have been applied to aerodynamic design of both rotor and stator in order to improve stage efficiency. A three dimensional viscous flow analysis and aero-optimization were used to enhance reliability of aerodynamic design. Test results prove that performance of this fan achieves its design goal. Efficiency of design pressure ratio point (2.3) is 89.5%, peak efficiency is 90.8%, maximum pressure ratio reaches 2.491, surge margin is higher than 11.5%. This single stage fan has demonstrated performance for the current world level. Outstanding performance is attribute to use of Quasi-two dimensional and three dimensional viscous design system in aerodynamic design of the high speed and highly loaded fan stage.