| 摘要: |
| 缘线匹配通过考虑多叶排叶轮机相邻叶排间前排叶片尾缘线与后排叶片前缘线空间相对位置匹配关系来进一步提升叶轮机性能,有潜力使叶轮机非定常设计走向工程实际。以一单级跨声轴流压气机和一单级轴流透平为例,尝试用基元流动展向积分方法和全优化方法改善其性能,从而示例应用缘线匹配的具体方法及前景。结果表明,缘线匹配为叶轮机非定常设计提供了可操作的自由度。 |
| 关键词: 叶片 缘线匹配+ 非定常流 流体力学 气动设计 |
| DOI： |
| 分类号:V231 |
| 基金项目:国家自然科学基金(50376062) |
|
| Edge matching for unsteady design of turbomachinery (II) Numerical investigations |
|
CHEN Jiang,JI Lu-cheng
|
|
1.Coll. of Energy and Power Engineering, Beijing Univ. of Aeronautics and Astronautics, Beijing 100083, China;2.Inst. of Engineering Thermophysics, Academia Sinica, Beijing 100080, China
|
| Abstract: |
| Edge Matching (EM) makes it possible to utilize time-accurate simulation of unsteady flow in daily design of multi blade row turbomachinery. The spatial relation between the trailing edge of one blade and the leading edge of sequent blade is taken into account in improving turbomachinery performance. One single stage transonic axial compressor and one single stage steam turbine are used as examples in using EM in which two implementation methods are involved, i.e. spanwise integration method and full optimization method. Another purpose is to illustrate the potential of EM. Results show that EM does provide unsteady design of turbomachinery an operable degree of freedom. |
| Key words: Blade Edge matching~+ Unsteady flow Fluid mechanics Aerodynamic design |
