摘要
通过数值模拟研究不同折转角弯曲扩压叶栅中弯高、弯角对其气动性能影响,利用试验设计和遗传算法实施方案选择和优化设计,给出不同折转角下弯高、弯角最佳匹配范围。结果表明,3种折转角情况下弯高、弯角的最佳匹配规律是不同的,随着扩压叶栅折转角的增大,较小的弯高和弯角匹配将更有效减少气动损失。
Through a numerical simulation investigated is the impact on the cascade performance of the curved height and curved angle in a curved diffuser cascade having different turning angles. Through the use of an experimental design and genetic algorithms an optimized design and a selection of possible options were carried out, resulting in the identification of an optimum matching range of curved height and curved angle under different turning angles. It has been found that the law governing the optimal matching of curved height and curved angle under three different turning angles can be different. With the increase in the turning angle of a diffuser cascade the matching of a relative small curved height and curved angle will be more effective in achieving the reduction of aerodynamic losses.
出处
《热能动力工程》
EI
CAS
CSCD
北大核心
2005年第3期258-261,共4页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金资助项目(50236020)
国家科技部973基金资助项目(G1999022307)
关键词
折转角
弯高/弯角
试验设计
遗传算法
优化
turning angle, curved height/curved angle, experimental design, genetic algorithm, optimization
