多级考虑冷气掺混流片变厚度的<em>S</em><sub>1</sub>流面研究

罗磊; 卢少鹏; 王松涛; 王龙飞; 崔涛

doi:10.13224/j.cnki.jasp.2014.09.027

多级考虑冷气掺混流片变厚度的S₁流面研究

doi: 10.13224/j.cnki.jasp.2014.09.027

哈尔滨工业大学能源科学与工程学院, 哈尔滨 150001

基金项目:

国家自然科学基金创新研究群体基金（51121004）

详细信息

作者简介:
罗磊（1987-），男，江西东乡人，博士生，研究领域为气冷涡轮叶片气动与传热设计.

中图分类号: V231.3
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出版历程
- 收稿日期: 2013-05-24
- 刊出日期: 2014-09-28

Research on S₁ stream surface for cooling air mixing and variable thickness flow slice in multi-stage

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

摘要

摘要: 为减少气冷涡轮气动设计难度，提出一套基于多级气冷涡轮考虑冷气掺混及随流道翘曲、变厚度的S₁流面计算思路，编制了带冷气的翘曲S₁流面薄片计算的参数化方法程序及网格自动生成程序，改良了传统平面薄片，对比分析了改良后平面薄片、翘曲S₁流面薄片以及三维计算间差异，对某高压涡轮进行了翘曲S₁流面薄片气动优化.结果显示：与三维计算对比，改良后平面薄片最大流量差距为22.68%，翘曲S₁流面薄片为3.58%，一维数据上翘曲S₁流面薄片更逼近三维计算；型面压力分布及马赫数云图分布上翘曲面S₁流面薄片较改良后平面薄片更贴近三维计算；采用翘曲S₁流面薄片进行优化后，效率较原始方案提升0.41%，流量较原始方案仅增加0.21%.
- S₁流面 /
- 冷气掺混 /
- 气动 /
- 平面薄片 /
- 涡轮 /
- 优化
Abstract: To reduce the difficulty of aerodynamic design in air-cooled turbine, a set of calculation ideas based on multi-stage air-cooled turbine were presented in consideration of the cooling air mixing, warped S₁ stream surface and variable thickness along with flow passage; the parameterization method program and automatic mesh generation program of warped S₁ stream surface slice with cooling condition were prepared, and the traditional plane slice was modified. Comparative analysis of the difference among the modified plane slice, warped S₁ stream surface slice and three-dimensional calculation was made, and aerodynamic design of a high-pressure turbine with warped S₁ stream surface slice was optimized. The results show that: in comparison with three-dimensional calculation, the maximum gap of mass flow in modified plane slice is up to 22.68%, and 3.58% in warped S₁ stream surface slice; the warped S₁ stream surface slice is closer to three-dimensional calculation on one-dimensional data; blade pressure and Mach number contour distribution of warped S₁ stream surface slice are closer to three-dimensional calculation than that of modified plane slice. After aerodynamic optimization in warped S₁ stream surface slice, compared with original model, the stage efficiency has been increased by 0.41%, while mass flow has only been increased by 0.21%.
- S₁ stream surface /
- cooling air mixing /
- aerodynamic /
- plane slice /
- turbine /
- optimization

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参考文献(16)

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