项目名称: 刚性陶瓷瓦缝隙流动-传热-结构多场固耦合分析方法研究
项目编号: No.11502306
项目类型: 青年科学基金项目
立项/批准年度: 2016
项目学科: 数理科学和化学
项目作者: 王静
作者单位: 中国运载火箭技术研究院
项目金额: 22万元
中文摘要: 刚性陶瓷瓦是高超声速飞行器,特别是可重复使用高超声速飞行器大面积区域广泛采用的一种热防护结构形式,具有防隔热效果良好、轻质、热膨胀率小、可重复使用等优点,随着相关材料性能的不断提高,其温度使用条件越来越高,基本能够满足各类高超声速飞行器机身部位防隔热指标要求,具有广泛的应用前景。刚性陶瓷瓦以阵列的形式敷设于机体表面的,因此块与块之间的缝隙是不可避免的。该缝隙一方面给单块热防护结构热膨胀变形预留了空间,另一方面也可以协调相互单元块之间的受载变形。本项目以刚性陶瓷瓦热防护系统为研究对象,对陶瓷瓦间缝隙流动-传热-结构多场耦合分析方法进行研究。研究成果可应用于刚性陶瓷瓦热防护系统设计,也可推广至金属热防护系统、盖板式热防护系统等其他类型的高超声速飞行器热防护系统设计,为我国发展战略性高超声速飞行器做基础研究和技术储备。
中文关键词: 气动热;刚性陶瓷瓦;热防护;缝隙流动
英文摘要: The rigid ceramic tiles are widely used in hypersonic vehicles, especially, in reusable hypersonic vehicle. With the materials developments, the performance and limited temperature are increasing gradually, ceramic tiles have a broad application prospect. The ceramic tiles are laid to form array on the body surface of the hypersonic vehicles. The Gaps between the ceramic tiles is needed to account for thermal expansion, on the other hand also can coordinate deformation under load between the unit block. In this research, a fluid-thermal-structure coupled method is investigated for the gaps between the ceramic tiles. The research findings can be used to the thermal protection system design of the ceramic tiles, also can be extended to the others protection systems design of the hypersonic vehicles. The related research will as our country’s development strategic of hypersonic vehicle does the basic research and technical reserves.
英文关键词: aerodynamic heating;ceramic tile;thermal protection system;gap fluid