引用本文: 刘丽丽, 陶聪颖, 王庆等. 关于矩形截面管道比摩阻的数值分析. 力学与实践, xxxx, x(x): 1-4.
Liu Lili, Tao Congying, Wang Qing, et al. Numerical analysis of specific friction for rectangular pipes. Mechanics in Engineering, xxxx, x(x): 1-4.
 Citation: Liu Lili, Tao Congying, Wang Qing, et al. Numerical analysis of specific friction for rectangular pipes. Mechanics in Engineering, xxxx, x(x): 1-4.

## NUMERICAL ANALYSIS OF SPECIFIC FRICTION FOR RECTANGULAR PIPES

• 摘要: 《工程流体力学》本科生教材的基本理论和工程应用都是针对圆形管道适用的，而对于非圆形管道的计算，教科书中提到采用当量直径的方法，认为非圆形管道的阻力和当量直径相同的圆形管道近似，从而将非圆形管道按照圆形管道进行计算。但当量直径相同的圆管和非圆形管的阻力受不同条件影响差别较大。所以采用数值计算方法分析影响矩形截面管道比摩阻的要素，为异型管阻力计算提供依据。

Abstract: The basic theory and engineering application of the undergraduate textbook of Engineering Fluid Mechanics are applicable to circular pipelines, while for the calculation of non-circular pipelines, the equivalent diameter method is mentioned in the textbook, which considers that the resistance of non-circular pipelines is similar to that of circular pipelines with the same equivalent diameter, so that non-circular pipelines are calculated according to circular pipelines. But the resistance of circular pipelines with the same equivalent diameter and non-circular pipelines is still very different affected by different conditions. Therefore, using numerical calculation method to analyze the factors affecting the specific friction of rectangular section pipelines, providing a basis for the resistance calculation of special-shaped pipelines.

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