流体传热场中的守恒定律及其解法

流体传热场1,2]中的传热是自然过程或过程工业中常见的单元操作3,4]之一,而套管式换热器5]是一类典型的换热设备;在套管式换热器中的流体传热场涉及了流体运动6],这些流体质点可能匀速直线运动(层流)、也可能波动运动(过渡流或湍流),所以确定流体质点运动的速度侧形(=■+■)成为了确定流体传热场的基础,本文中基于守恒定律探讨了流体质点运动速度侧形的求解方法。

Conservation Laws in Heat Transfer Field and Theirs Solutions

Heat Transfer is one of common unit operations in fluid heat transfer field of natural processes or process industries, and casing heat exchanger is a class of classic devices. Fluid heat transfer field in casing heat exchanger deals with fluid movement, in which fluid particles may move at uniform linear motion（laminar flow）, or at waving motion（transition flow or turbulent fluid flow）. Therefore, it is a basis to fix the issues in fluid heat transfer field that we solve the velocity profile of fluid particle movement （u^p=ux^-p＋u^p） in it, and some solving methods of the velocity profile in fluid particles movement had been discussed based on conservation laws in this paper.