低导热材料的热物理性质的贝叶斯平行优化,使用在体配坐标中的过渡平面源方法
Huijuan Su1, Jianye Kang1, Yan Li1
1School of Nuclear Science, Energy and Power Engineering, Shandong University, Jinan 250061, China.
这项研究增强了用于绕探头的热传递建模,使用体配坐标系统和并行贝叶斯优化算法. 这些方法显著提高了热物理性质逆转的计算速度和准确性.
科学领域:
- 热传递热量转移的方法
- 计算物理 计算物理
- 数学方法 数学方法
背景情况:
- 精确的热物理性质反转对于材料科学和工程至关重要.
- 现有的传热建模方法在计算效率和准确性方面面临挑战.
- 过渡平面源 (TPS) 方法需要对直接和反向问题的高效数值解决方案.
研究的目的:
- 开发一个有效的计算模型,用于过渡平面源 (TPS) 方法.
- 通过反向问题分析,提高热物理性质反转的准确性和速度.
- 为了评估一个配合身体的坐标系和一个平行贝叶斯优化算法的有效性.
主要方法:
- 使用过渡平面源 (TPS) 方法建立了一个传热模型.
- 实现了适合身体的坐标系统,以转换非结构化的网格,以提高计算速度.
- 开发了一个并行贝叶斯优化算法,用于反向问题的多目标混合策略 (MHS).
主要成果:
- 与CFD软件相比,与机体相适应的网格转换能提高36%以上的计算速度,与非结构化的网格程序相比,可提高91%.
- 在并行模式下,MHS算法表现出卓越的准确性和速度,相对偏差低于0.03%.
- 将平行点从2增加到6减少了66.6%的计算时间,加速了算法收.
结论:
- 装在车身上的坐标系统显著加快了TPS方法的计算.
- 平行MHS算法为热物理性质逆转提供了一个具有竞争力和准确的方法.
- 开发的方法为复杂的传热问题提供了强大而高效的解决方案.
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