摘要
采用红外辐射加热式气动热模拟试验系统,进行了高温环境下的金属蜂窝板隔热性能试验研究,试验温度最高达到800℃;采用有限元的方法进行了金属蜂窝板传热特性数值模拟,计算中考虑了蜂窝板内部金属蜂窝芯结构的导热,蜂窝腔内壁面间的辐射换热和蜂窝腔内空气的传热.研究结果显示,金属蜂窝板后表面的试验测试数据与数值模拟结果吻合的很好.金属蜂窝板在高达800℃高温热环境下的隔热性能数值计算和试验结果将为航天航空器的防热结构研究提供参考依据.
Using the infrared radiation aerodynamic heating simulation test system, the heat-shielding properties of the metallic honeycomb panel were tested up to 800℃ ; Taking into consideration of the radicalization among honeycomb wall surfaces and the heat transfer of metal structure and air within honeycomb core cavity, the finite element model was established in the numerical simulation to calculate the heat-shielding properties of the metallic honeycomb panels. The experimental results agree well with the numerical simulation results. The experimental and calculated results for heat-shielding properties of the metallic honeycomb panel up to 800℃ provide an important basis for the safety design of high-speed aircrafts and vehicles.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2012年第6期731-735,共5页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金资助项目(11002012
11172026)
关键词
蜂窝结构
传热
实验研究
数值模拟
有限元
honeycomb structure
heat transfer
experimental research
numerical simulation
finite element
