多模式沸数据集与同步的声学,光学和热量测量在稳定状态和短暂的热负荷下
Hari Pandey1, Changgen Li1, Han Hu1
1Department of Mechanical Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
Data in brief
|July 15, 2024
概括
研究人员开发了一个多模式数据集,以了解沸的临界热量流 (CHF). 这些数据有助于通过分析沸过程中的热,声和光信号来改善电子冷却和发电.
科学领域:
- 热力学和热转移热力学
- 流体动力学 流体动力学
- 材料科学 材料科学 材料科学
背景情况:
- 沸对于电子冷却和发电中的高性能散热至关重要.
- 临界热流 (CHF) 代表了沸热传递的性能限制,需要对其触发机制有更深入的了解.
- 目前在描述沸性CHF方面的挑战源于其复杂,高维度,随机和动态的性质.
研究的目的:
- 解决了解沸关键热量流 (CHF) 的全面数据需求.
- 提供高保真性,多物理数据集,以推进对沸热转移的基本理解.
- 支持用于工业应用的先进热危机监测技术的开发.
主要方法:
- 在沸实验期间收集同步的热,声和光信号.
- 在两个不同的热负荷条件下利用了五种不同的加热表面.
- 采用高率和高分辨率的数据采集用于详细的过程捕获.
主要成果:
- 产生了大量的多式沸数据集,采样频率高.
- 该数据集捕获了各种信号类型,提供了有关沸动态的丰富信息.
- 这些数据为分析热危机现象提供了宝贵的资源.
结论:
- 提出的多式联通沸数据集对于推进泡动力学和沸热传递研究至关重要.
- 这一数据集将有助于开发和验证用于预测临界热量流量的模型.
- 它支持在工业热管理系统中实施先进的监测和控制策略.
相关概念视频
01:20Mechanisms of Heat Transfer II
3.2K
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...
3.2K
01:12Heat Flow and Specific Heat
5.4K
Heat is a type of energy transfer that is caused by a temperature difference, and it can change the temperature of an object. Since heat is a form of energy, its SI unit is the joule (J). Another common unit of energy often used for heat is the calorie (cal), which is defined as the energy needed to change the temperature of 1 g of water by 1 °C, specifically between 14.5 °C and 15.5 °C, since the energy needed shows a slight temperature dependence. Another commonly used unit is...
5.4K
02:41Constant Volume Calorimetry
27.1K
Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant (atmospheric) pressure and are convenient to measure heat flow (or enthalpy change) accompanying processes that occur in solution at constant pressure. A different type of calorimeter that operates at constant volume, colloquially known as a bomb calorimeter, is used to measure the energy produced by reactions that yield large amounts of heat and...
27.1K
01:14Mechanisms of Heat Transfer I
4.2K
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.
4.2K
03:02Constant Pressure Calorimetry
85.1K
Calorimetry is a technique used to measure the amount of heat involved in a chemical or physical process or to measure the heat transferred to or from a substance. The heat is exchanged with a calibrated and insulated device called the calorimeter. Calorimetry experiments are based on the assumption that there is no heat exchange between the insulated calorimeter and the external environment. The well-insulated calorimeters prevent the transfer of heat between the calorimeter and its external...
85.1K
01:14Mechanisms of Heat Transfer
312
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...
312