A Bayesian Spatiotemporal Modeling Approach to the Inverse Heat Conduction Problem

被引:1
作者
Olabiyi, Ridwan [1 ]
Pandey, Hari [2 ]
Hu, Han [2 ]
Iquebal, Ashif [1 ]
机构
[1] Arizona State Univ, Sch Comp & Augmented Intelligence, Tempe, AZ 85281 USA
[2] Univ Arkansas, Dept Mech Engn, Fayetteville, AR 72701 USA
来源
ASME JOURNAL OF HEAT AND MASS TRANSFER | 2024年 / 146卷 / 09期
关键词
IHCP; pool boiling; Bayesian inference; spatio-temporal model (STM); NUMERICAL-SOLUTION; SCHEMES; REGULARIZATION; APPROXIMATION; TEMPERATURE; INFERENCE; FLUX;
D O I
10.1115/1.4065451
中图分类号
O414.1 [热力学];
学科分类号
摘要
This study introduces a Bayesian spatiotemporal modeling approach to solve inverse heat conduction problems (IHCPs), employing penalized splines within a spatiotemporal forward model. The complexity and ill-posed nature of IHCPs, characterized by potential nonexistence, nonuniqueness, or instability of solutions, pose significant challenges for traditional methods. Addressing this, our study presents a spatiotemporal forward model that incorporates spatial, temporal, and interaction terms, accurately capturing the intricate dynamics inherent in IHCPs and using this information as a leverage to solve the inverse problem. We adopted a Bayesian inference framework for the subsequent parameter estimation problem and developed a Gibbs sampling algorithm to sample from the posterior distribution of the model's parameters, enhancing the estimation process. Through case studies on a one-dimensional (1D) heat simulation and a pool boiling experiment using multisensor thermocouple data for heat flux reconstruction, we demonstrate the model's superiority over traditional methods. The inclusion of the spatiotemporal interaction term significantly enhances model performance, indicating its potential for broader application in solving IHCPs. The application of this method in both simulated and real-world scenarios highlights its effectiveness in capturing the spatiotemporal complexities of IHCPs. This work contributes to the field by offering a robust methodology for addressing the spatial and temporal complexities inherent in IHCPs, supported by a comprehensive Bayesian inference framework and the use of a Gibbs sampling algorithm for parameter estimation.
引用
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页数:11
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