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相关概念视频

Phase Transitions: Melting and Freezing02:39

Phase Transitions: Melting and Freezing

12.3K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
12.3K

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相关实验视频

Updated: Jun 10, 2025

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
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基于相场的格子博尔茨曼方法用于无容器冷.

Jiangxu Huang1, Lei Wang2, Zhenhua Chai1,3,4

  • 1School of Mathematics and Statistics, <a href="https://ror.org/00p991c53">Huazhong University of Science and Technology</a>, Wuhan 430074, China.

Physical review. E
|October 19, 2024
PubMed
概括
此摘要是机器生成的。

一个新的相场模型和格子博尔兹曼法模拟了无容器冷,准确地预测了滴滴凝固和泡效应. 这种方法增强了对多相系统中相变现象的理解.

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Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package
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科学领域:

  • 计算物理学的计算物理.
  • 材料科学是一种材料科学.
  • 流体动力学 流体动力学

背景情况:

  • 无容器冷涉及复杂的相变现象.
  • 精确模拟液体-固体相位过渡对于材料加工至关重要.
  • 现有的模型可能无法完全捕捉固化过程中的密度变化.

研究的目的:

  • 开发一个相场模型,考虑体积变化,用于无容器冷.
  • 创建一个基于相场的格子博尔兹曼 (LB) 方法来模拟多相固化.
  • 为了研究物理参数对静态滴滴固化的影响.

主要方法:

  • 一个相场模型,包含密度变化的质量源项.
  • 基于相场的格子博尔兹曼方法的开发.
  • 通过模拟导电诱导的结,斯蒂芬问题,滴滴凝固和升起的气泡的验证.

主要成果:

  • 开发的LB方法准确模拟各种结问题.
  • 数字结果与分析和实验数据保持一致.
  • 参数研究表明固化时间随着滴水体积和接触角度的增加而增加.

结论:

  • 拟议的相场模型和LB方法在模拟无容器冷方面是有效的.
  • 该方法准确地捕捉了气泡对固化的影响.
  • 了解参数的影响有助于控制滴滴凝固过程.