涡轮叶片气热耦合壁温及压力分布计算与分析

李卓轩; 沙云东; 骆丽

doi:10.3969/j.issn.2095-1248.2024.01.001

沈阳航空航天大学学报 ›› 2024, Vol. 41 ›› Issue (1) : 1 -8. DOI: 10.3969/j.issn.2095-1248.2024.01.001

航空宇航工程

涡轮叶片气热耦合壁温及压力分布计算与分析

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Conjugate heat transfer simulation and analysis of wall temperature and pressure distribution on a turbine blade

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摘要

针对气冷涡轮叶片建立了耦合分析数值模拟计算平台，采用气热耦合的方法，对径向气冷MARK Ⅱ 型叶片进行三维气热耦合数值模拟。分析了该内冷涡轮叶片的多场耦合特性，并将计算结果与试验值进行对比。对比结果表明：湍流模型的选择影响叶片表面的温度分布，但对叶片表面压力分布影响较小；在选择的6种湍流模型中，SST $k - ω$ 湍流模型对该流场状态模拟的效果较好，叶片表面温度和压力与试验结果最接近，满足工程上的计算要求。考虑涡轮进口总温径向不均匀时，会在叶片尾缘形成局部高温区，增加了叶身的温度梯度，可适当改进冷却方式，以提高叶片强度。

关键词

涡轮叶片 / 气热耦合 / 流场结构 / 数值仿真 / 湍流模型

Key words

turbine blade / conjugate heat transfer / flow field structure / numerical simulation / turbulence model

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李卓轩(1991-),女,辽宁海城人,硕士研究生,主要研究方向:航空发动机强度、振动及噪声,E-mail:li_zx1991@163.com

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李卓轩(1991-),女,辽宁海城人,硕士研究生,主要研究方向:航空发动机强度、振动及噪声,E-mail:li_zx1991@163.com

沙云东(1966-),男,黑龙江阿城人,教授,博士,主要研究方向:航空发动机强度、振动及噪声,E-mail:ydsha2003@vip.sina.com。

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沙云东(1966-),男,黑龙江阿城人,教授,博士,主要研究方向:航空发动机强度、振动及噪声,E-mail:ydsha2003@vip.sina.com。

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