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所在平台: Udemy |
课程主页: https://www.udemy.com/course/advanced-heat-transfer-thermal-radiation/
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**课程名称：** 高级传热学：热辐射 **课程概述：** 本课程深入探讨电磁波、热辐射及其辐射特性，并介绍相关的真实世界应用。课程从电磁波和电磁波谱入手，聚焦热辐射。我们将介绍理想黑体、黑体辐射及其辐射函数，以及斯特藩-玻尔兹曼定律、普朗克定律和维恩位移定律等关键原理。 课程将详细讲解平面上任意点向其上方半球空间发出的辐射，并学习描述辐射强度大小的辐射强度概念。同时，还会讨论发射率、辐照度、辐射率等关键辐射通量，并阐述它们与辐射强度的关系。此外，课程还将涵盖材料的辐射特性，包括发射率、吸收率、反射率和透射率，以及它们随波长、方向和温度的变化。温室效应将作为波长依赖性辐射特性的一个应用实例。 课程还将深入讲解视角因子及其相关规则，提供常见几何形状的视角因子表达式和图表，并介绍交叉弦法。我们还将使用辐射网络方法，讨论黑体表面与非黑体表面之间的辐射传热。最后，我们将探讨辐射屏蔽及其对辐射的影响。 通过本课程的学习，您将全面掌握电磁波、热辐射和辐射特性，为将这些概念应用于实际场景做好准备。立即报名，提升您对辐射及其在各种应用中影响的认知。
Delve into Electromagnetic Waves, Thermal Radiation, and Radiative Properties: Comprehensive Insights and Real-World ApplicationsIn this course, we begin by examining electromagnetic waves and the electromagnetic spectrum, focusing on thermal radiation. We introduce the concept of the idealized blackbody, blackbody radiation, and blackbody radiation function, along with key principles such as the Stefan-Boltzmann law, Planck's law, and Wien's displacement law.We explore the radiation emitted by every point on a plane surface in all directions into the hemisphere above the surface, and study the radiation intensity that describes the magnitude of radiation emitted or incident in specific directions. Key radiation fluxes like emissive power, irradiation, and radiosity are discussed in terms of intensity. The course also covers radiative properties of materials, including emissivity, absorptivity, reflectivity, and transmissivity, and their dependencies on wavelength, direction, and temperature. The greenhouse effect serves as an example of the consequences of wavelength-dependent radiation properties.The course further delves into view factors and their associated rules, providing view factor expressions and charts for common configurations and introducing the crossed-strings method. We discuss radiation heat transfer between black surfaces and nonblack surfaces using the radiation network approach. Finally, we examine radiation shields and their effects on radiation.Throughout the course, you will gain a comprehensive understanding of electromagnetic waves, thermal radiation, and radiative properties, preparing you to apply these concepts in real-world scenarios. Enroll now to enhance your knowledge of radiation and its implications in various applications
