层板-热障涂层复合结构的综合冷却效率和力学性能

白波; 张嘉伟; 郝铭扬; 李志刚; 李军

doi:10.7652/xjtuxb202603010

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层板-热障涂层复合结构的综合冷却效率和力学性能

更新时间：2026-03-09

- 层板-热障涂层复合结构的综合冷却效率和力学性能
- Overall Cooling Effectiveness and Mechanical Performance of Laminate-Thermal Barrier Coating Composite Structures
- 西安交通大学学报 2026年60卷第3期页码：97-109
- 作者机构：
  
  西安交通大学能源与动力工程学院，710049，西安
- 作者简介：
  
  作者简介：白波（1995—），男，助理教授；
  李志刚（通信作者），男，教授，博士生导师。
- 基金信息：
  
  国家资助博士后研究人员计划资助项目。(GZC20241345);国家自然科学基金资助项目。(52406053)
- DOI：10.7652/xjtuxb202603010
  中图分类号： TK474.4
- 收稿：2025-04-16，
  
  纸质出版：2026-03-10
- 稿件说明：
移动端阅览
白波, 张嘉伟, 郝铭扬, 等. 层板-热障涂层复合结构的综合冷却效率和力学性能[J]. 西安交通大学学报, 2026,60(3):97-109.

BAI Bo, ZHANG Jiawei, HAO Mingyang, et al. Overall Cooling Effectiveness and Mechanical Performance of Laminate-Thermal Barrier Coating Composite Structures[J]. Journal of Xi'an Jiaotong University, 2026, 60(3): 97-109.
白波, 张嘉伟, 郝铭扬, 等. 层板-热障涂层复合结构的综合冷却效率和力学性能[J]. 西安交通大学学报, 2026,60(3):97-109. DOI： 10.7652/xjtuxb202603010.

BAI Bo, ZHANG Jiawei, HAO Mingyang, et al. Overall Cooling Effectiveness and Mechanical Performance of Laminate-Thermal Barrier Coating Composite Structures[J]. Journal of Xi'an Jiaotong University, 2026, 60(3): 97-109. DOI： 10.7652/xjtuxb202603010.

摘要

为阐明层板-热障涂层（TBC）复合结构气热性能与应力分布特征，实现层板冷却结构与TBC高效耦合目标，采用共轭传热模型，提出了复合结构流-固-力耦合数值预测方法，系统研究了气膜板厚度（

0.8

，1.0

，1.2

，

为气膜孔直径）与TBC厚度（

TBC

0.6

，0.8

，1.0

）对复合结构综合冷却特性和应力分布的影响。研究结果表明：复合结构TBC表面和金属基体表面综合冷却效率对气膜板厚度变化不敏感，不同气膜板厚度下复合结构综合冷却效率差异小于1.0%。增加TBC厚度可以显著增强复合结构金属基体表面综合冷却效率，在

TBC

为1.0

时，相较于参考工况综合冷却效率增幅约为15.6%。气膜板厚度与TBC厚度对复合结构力学性能影响具有拮抗效应，随着

和

TBC

增加，等效应力降幅和等效应力增幅分别超过10.0%和23.5%。复合结构中气膜孔出口、金属基体/TBC交界面和气膜孔入口附近存在应力集中现象，气膜孔前缘应力沿径向呈W型分布，在金属基体/TBC交界面处出现等效应力峰值。增加气膜板厚度可以改善金属基体内部力学性能，喷涂较厚的TBC可以缓解金属基体/TBC交界面应力集中，降低TBC剥落风险，但会显著增强气膜孔出口附近应力水平（最大等效应力超过1 000 MPa），因此建议在层板-TBC复合结构设计中采用较厚的气膜板（

=1.2

）和喷涂合适厚度TBC（

TBC

=0.8

）的方案。

Abstract

To elucidate the aero-thermal performance and stress distribution characteristics of laminate-thermal barrier coating (TBC) composite structures and achieve efficient coupling between laminate cooling structures and TBC

a conjugate heat transfer model is adopted to establish a fluid-solid-force coupled numerical prediction method.The effects of film-cooling plate thickness (

=0.8

1.0

1.2

)and TBC thickness (

TBC

=0.6

0.8

1.0

)on the overall cooling characteristics and stress distribution of the composite structure are systematically investigated.The results show that the overall cooling effectiveness on both the TBC surface and the metal substrate surface is insensitive

to changes in the film-cooling plate thickness

with differences in overall cooling effectiveness under different

values being less than 1.0%.Increasing the TBC thickness significantly enhances the overall cooling effectiveness of the metal substrate surface.At

TBC

=1.0

the overall cooling effectiveness increases by approximately 15.6% compared to the reference case.The film-cooling plate thickness and the TBC thickness exhibit antagonistic effects on the mechanical performance of the composite structure.As

and

TBC

increase

the reduction in equivalent stress and the increase in equivalent stress exceed 10.0% and 23.5%

respectively.Stress concentration occurs near the film-cooling hole exit

the metal substrate/TBC interface

and the film-cooling hole inlet in the composite structure.The stress distribution along the radial direction at the leading edge of the film-cooling hole shows a W-shaped profile

with a peak equivalent stress appearing at the metal substrate/TBC interface. Increasing the film-cooling plate thickness improves the mechanical performance within the metal substrate

while applying a thicker TBC alleviates stress concentration at the metal substrate/TBC interface and reduces the risk of TBC spallation.However

a thicker TBC significantly elevates the stress level near the film-cooling hole exit (maximum equivalent stress exceeding 1 000 MPa).Therefore

it is recommended in laminate-TBC composite structure design to adopt a thicker film-cooling plate (

=1.2

)along with an appropriately thick TBC coating (

TBC

=0.8

关键词

Keywords

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