第一节 对称性和对称性原理 第二节 对称性与守恒定律 第三节 对称性的自发破缺

一麦克斯韦(1831-1879)简介 英国物理学家、 数学家。11月13日出 生时,是法拉第发现 电磁感应后2个多月 15岁在“爱丁堡皇 家学报”发表论文, 1854年从剑桥大学毕 业,卡文迪什试验室 首任主任

一、法拉第电磁感应定律 二、动生电动势 三、感生电动势和感生电场 四、互感 五、自感 六、磁场的能量

一、磁介质对磁场的影响 二、原子的磁矩 三、磁介质的磁化 四、H的环路定理 五、铁磁质 六、简单磁路

What is Convective Heat Transfer? You have already experienced it. Difficulty lies in generalizing our experience; filtering it down to a few laws: learning how to apply these laws to systems we engineers design and use Here is what i want you to do:

Viscous flow The Navier-Stokes Equations Nonlinear, second order, partial differential equations

Heat Exchangers, LMTD Method Where we’ ve been. So far have focused on detailed heat transfer analysis of specific conditions, such as external heat transfer coefficient Where were going: Investigate methods for larger system level analysis that combine all these modes of heat transfer in heat exchangers

Natural Convection Where we’ ve been. Up to now, have considered forced convection that is an external driving force causes the flow. Where we’ re going: Consider the case where fluid movement is by buoyancy effects caused by temperature differential Heat Transfer Su Yongkang

Heat Exchangers. NTU-8 Method Where we’ ve been∴ Analysis of heat exchangers using log mean temperature difference (LMTD)

Natural Convection Where we’ ve been Up to now, have considered basic concepts of natural convection, the governing equations and laminar free convection on vertical surface Where were going Consider empirical correlations for natural convection Heat Transfer