航空工程进展2025，Vol.16Issue(5)：79-90,12.DOI:10.16615/j.cnki.1674-8190.2025.05.08
考虑蠕变效应的S弯流固热耦合特性分析
Analysis of S-duct's fluid-solid-thermal coupling characteristic considering creep effect
摘要
Abstract
For the hypersonic vehicle whose inlet and combustion chamber are not on the same axis,the S-duct is an important component,and its main function is to turn the air flow.In order to study the influence of multi-field coupling effect of creep material on the S-duct of hypersonic inlet,the numerical simulation of the S-duct of hyper-sonic inlet for long endurance is carried out by using the independently developed fluid-solid-thermal bidirectional coupling calculation and analysis platform.The results show that the location of the maximum creep strain in S-duct is changing,and the creep effect will lead to the relaxation of S-duct stress and affect the stress distribution and magnitude of the structure.The creep effect changes the solid structure of S-duct,and influences the wave structure,pressure and temperature of flow field under the multi-field coupling effect.关键词
气动热/S弯进气道/蠕变/多场耦合/总压恢复系数Key words
aerodynamic heat/S-duct inlet/creep/multi-field coupling/total pressure recovery coefficient分类
航空航天引用本文复制引用
林源,李璋,孙明波,王成龙,沈赤兵,谭栋才,苏昂,关棒磊,万明罡,陈旗..考虑蠕变效应的S弯流固热耦合特性分析[J].航空工程进展,2025,16(5):79-90,12.基金项目
国家自然科学基金(11925207,92252206,12072367) （11925207,92252206,12072367）
湖南省科技创新计划(2023RC3018) （2023RC3018）
