在Symplectic框架内,在热疗法面具中对正方形暂时导热的分析建模
Jinbao Li1, Dian Xu1, Chengjie Guo1
1School of Mechanics and Aerospace Engineering, State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, and International Research Center for Computational Mechanics, Dalian University of Technology, Dalian 116024, China.
Micromachines
|November 27, 2025
概括
这项研究提出了一种分析解决方案,用于热疗法口罩中的热传导,这对于可穿戴设备的安全性和有效性至关重要. 研究结果显示,增加热对流可以加快热稳定,降低峰值温度.
科学领域:
- 热力工程是热力工程中的一个.
- 生物医疗设备的设计
- 材料科学 材料科学 材料科学
背景情况:
- 可穿戴的热疗法口罩需要精确的热管理,以确保安全性和有效性.
- 现有的研究缺乏严格的调查在操作条件下的正热热疗法面具的热传导行为.
研究的目的:
- 解决了解 орто热疗法面具中的热传递的差距.
- 在对流边界条件下,用线路热源推导短暂热传导的分析解决方案.
主要方法:
- 这个问题被建模为一个2D正极管的短暂热传导问题.
- 采用了Symplectic Singular Decomposition Method (SSM) 的方法,涉及拉普拉斯变换和哈密尔顿力学.
- 该解决方案与有限元素方法进行了验证.
主要成果:
- 一个分析解决方案被成功衍生和验证.
- 增加的热传递系数加快了短暂状态到稳定状态的过渡,并降低了稳定状态温度.
- 正方体导热率表现出"短板效应",限制了温度演变.
结论:
- 该研究为可穿戴式热设备提供了准确和高效的热预测基准.
- 这些发现对优化灵活电子产品的热管理有意义,包括可穿戴传感器和显示器.
相关概念视频
01:20Mechanisms of Heat Transfer II
4.2K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
4.2K
01:19Mechanism of heat transfer
1.8K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.8K
01:14Mechanisms of Heat Transfer I
5.9K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
5.9K
01:14Mechanisms of Heat Transfer
1.6K
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
1.6K
01:27Thermal expansion and Thermal stress: Problem Solving
2.1K
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55...
2.1K
01:16Thermal Sigmatropic Reactions: Overview
2.4K
Sigmatropic rearrangements are a class of pericyclic reactions in which a σ bond migrates from one part of a π system to another. These are intramolecular rearrangements where the total number of σ and π bonds remain unchanged.
Sigmatropic shifts are classified based on an order term [i, j ], where i and j indicate the number of atoms across which each end of the σ bond migrates. Below are examples of a [3,3] sigmatropic shift in 1,5-hexadiene, referred...
Sigmatropic shifts are classified based on an order term [i, j ], where i and j indicate the number of atoms across which each end of the σ bond migrates. Below are examples of a [3,3] sigmatropic shift in 1,5-hexadiene, referred...
2.4K