A monolithic computational approach to thermo‐structure interaction
A monolithic computational approach to thermo‐structure interaction
复制标题
DOI：
10.1002/nme.4530
复制
发表时间：
2013-09
影响因子：
2.9
通讯作者：
C. Danowski;V. Gravemeier;L. Yoshihara;W. Wall
中科院分区：
文献类型：
--
作者：
C. Danowski;V. Gravemeier;L. Yoshihara;W. Wall
在目前的工作中，提出了一种由火箭喷嘴行为的挑战性应用引发的热结构相互作用问题的整体解决方法。结构场和热场通过有限元独立离散。由此产生的方程组通过整体热结构相互作用方案求解，该方案由块高斯-赛德尔预处理器结合代数多重网格方法构建。该方法针对四个数值示例进行了测试，即第二个丹尼洛夫斯卡亚问题、简化的火箭喷嘴配置、内部加载的空心球以及小型推力室的全三维喷嘴配置。观察到数值结果与文献结果非常吻合。此外，结果表明，整体求解算法可以处理参数谱的完整范围，而分区算法仅局限于某个参数范围。此外，与分区算法相比，整体算法表现出更高的效率和鲁棒性。版权所有 © 2013 约翰·威利父子有限公司
In the present work, a monolithic solution approach for thermo‐structure interaction problems motivated by the challenging application of the behaviour of rocket nozzles is proposed. Structural and thermal fields are independently discretised via finite elements. The resulting system of equations is solved via a monolithic thermo‐structure interaction scheme, which is constructed by a block Gauss–Seidel preconditioner in combination with algebraic multigrid methods. The proposed method is tested for four numerical examples, the second Danilovskaya problem, a simplified rocket nozzle configuration, an internally loaded hollow sphere, and a fully three‐dimensional nozzle configuration of a subscale thrust chamber. Good agreement of the numerical results with results from the literature is observed. Furthermore, it is shown that the monolithic solution algorithm can handle the complete range of the parameter spectrum, whereas partitioned algorithms are limited to a certain parameter range only. Moreover, the monolithic algorithm exhibits improved efficiency and robustness compared to partitioned algorithms. Copyright © 2013 John Wiley & Sons, Ltd.