基于反问题的涡轮过渡流道支板设计方法 -- 西北工业大学学报,2017,35(2):246-251
论文:2017,Vol:35,Issue(2):246-251
引用本文:
侯朝山, 吴虎, 刘昭威. 基于反问题的涡轮过渡流道支板设计方法[J]. 西北工业大学学报
Hou Chaoshan, Wu Hu, Liu Zhaowei. Design of Struts in an Intermediate Turbine Duct Based on Inverse Method[J]. Northwestern polytechnical university

基于反问题的涡轮过渡流道支板设计方法
侯朝山, 吴虎, 刘昭威
西北工业大学 动力与能源学院, 陕西 西安 710072
摘要:
涡轮过渡流道支板通常采用直叶型设计以保证其足够的强度,当流道进口旋流角度沿径向分布变化较大时,过渡流道内部容易发生气流分离,为此提出了基于三维黏性反问题设计方法的涡轮过渡流道低负荷整流支板设计。对某型涡扇发动机涡轮过渡流道整流支板进行了反问题设计,数值模拟结果表明,基于反问题设计的整流支板有利于抑制支板表面附面层增厚,降低过渡流道内部发生气流分离的风险,且新设计的过渡流道静压恢复系数系数增大了18.8%,总压损失系数降低了25.8%。
关键词:    涡轮过渡流道    整流支板    反问题设计    气流分离    马赫数   
Design of Struts in an Intermediate Turbine Duct Based on Inverse Method
Hou Chaoshan, Wu Hu, Liu Zhaowei
School of Power and Energy, Northwestern Polytechnic University, Xi'an 710072, China
Abstract:
In order to ensure the strength of strut in intermediate turbine duct(ITD), straight blade is usually used as the standard shape to the strut design. However, flow separation is likely to occur when significant change in swirl angle has been found from hub to shroud. The concept of low load strut design is proposed based on the three-dimensional inverse design method theories. In the present work, the inverse design method has been applied to the strut design in a turbofan engine ITD. The numerical simulation results show that the inverse design strut is able to restrain the thickening of the boundary layer which can result in reducing the risk of flow separation. Additionally, the static pressure recovery coefficient of the new duct increases by 18.8% and the total pressure loss coefficient decreases by 25.8%.
Key words:    intermediate turbine duct(ITD)    strut    inverse design method    flow separation    mach number   
收稿日期: 2016-09-20     修回日期:
DOI:
基金项目: 国家自然科学基金(51076131)资助
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作者简介: 侯朝山(1989-),西北工业大学博士研究生,主要从事叶轮机械气动热力学研究。
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