非园断面通道层流摩擦阻力与换热理论研究的新进展

ADVANCES IN THE THEORY OF FRICTIONAL RESISTANCE AND HEAT TRANSFER OF LAMINAR FLOW IN DUCTS WITH NONCIRCULAR CROSS SECTIONS

本文介绍作者近些年来对椭圆、矩形、扇形、任意三角形、正多边形、环形等各种非圆断面通道层流摩擦阻力与换热理论的研究成果，给出大量新的速度与温度场表达式，以及摩擦阻力与换热的新的计算公式。本文对传统的层流阻力与换热理论进行了一次系统的补充与完善，同时考虑到工程需要，对所有繁杂的理论公式都进行了化简，给出形式简单而且精度相当高的近似公式。

This article introduces the writer's achievements in the recent research in the theory of frictional resistance and heat transfer of laminar flow in Ducts with noncircular cross sections,such as ellipse, rectangle, sector, arbitrary triangle, regular polygon, annulara, etc., shows a great amount of new formulas about velocity and temperature field, frictional resistance and heat transfer, supplements systematically the traditional theory of laminar resistance and heat transfer, simplifies all the complicated theoretical formulas and reduces to approximate formulas in easy form and high precision, concerning requirements in the engineering.