摘要
利用电磁场辅助强化物理和化学过程具有显著的效果,用热力学描述电磁作用过程是一种有效的理论方法。介绍了经典热力学的基本研究方法,将介质中的电磁能量密度分解为真空部分和纯介质部分,导出了介质中极化能和磁化能的微分式。利用能量公理建立了电(磁)场作用下系统的热力学基本微分式,通过定义对应的辅助函数导出了有应用价值的偏导数等式和熵方程。利用建立的电磁热力学理论分析了热电效应和压电效应等过程,总结了电磁热力学研究方法。工作初步将电磁学和热力学相结合,对相关的理论以实验研究有一定的参考意义。
Some physical and chemical processes can be greatly enhanced by electromagnetic field, and they could be effectively described with thermodynamics. In this paper, the fundamental method of classical thermodynamics was introduced; with the energy density of electromagnetic field in dielectric/magnetic being separated into two parts, the differential expressions of energy density of dlelectric/magnetic were derived. Based on the energy postulate, the fundamental electric/magnetic - thermodynamic differential equation was put forward; then with the corresponding defi- nitions of enthalpy, Helmholtz function and Gibbs function, some differential equations and entropy equations were set up. The thermoelectric effect and piezoelectric effect were analyzed with this advanced electric/magnetic - thermodynamic theory, the general thermodynamic research method was summarized. In this work, classical thermodynamics was generalized successfully to include electromagnetic action.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2010年第2期104-108,共5页
Journal of North China Electric Power University：Natural Science Edition
基金
广东省科技计划资助项目(2009B03081077)
关键词
能量公理
热力学能
电介质
电磁能量密度
energy postulate
thermodynamic energy
dielectric
electromagnetic energy density
作者简介
韩光泽（1964-），男，教授，研究方向为工程热力学校外场作用下的传递过程。
