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Combination of Karhunen-Loève and intrusive polynomial chaos for uncertainty quantification of thermomagnetic convection problem with stochastic boundary condition

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成果类型:
期刊论文
作者:
Jiang, Changwei;Qi, Yuquan;Shi, Er
通讯作者:
Shi, E
作者机构:
[Qi, Yuquan; Shi, Er; Jiang, Changwei] Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410114, Peoples R China.
通讯机构:
[Shi, E ] C
Changsha Univ Sci & Technol, Sch Energy & Power Engn, Changsha 410114, Peoples R China.
语种:
英文
关键词:
Uncertainty propagation analysis;Intrusive polynomial chaos expansion;Thermomagnetic convection;Stochastic boundary condition;Chaos effect
期刊:
Engineering Analysis with Boundary Elements
ISSN:
0955-7997
年:
2024
卷:
159
页码:
452-465
基金类别:
National Natural Science Foundation China [11572056]; Natural Science Founda-tion of Changsha City [2202203]
机构署名:
本校为第一且通讯机构
院系归属:
能源与动力工程学院
摘要:
Uncertainty propagation analysis plays a crucial role in understanding the impact of variations in initial condition, boundary condition, and fluid physical properties on simulation results for thermomagnetic convection heat transfer problems. To effectively analyze the uncertainty problem of thermomagnetic convection caused by random temperature fluctuations, a novel and comprehensive computational framework based on intrusive polynomial chaos approach was proposed in this paper. Our proposed approach aims to represent random temperature boundaries using Karhunen-Loe`ve expansion (KLE) and st...

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