非圆形管道中压力损失的估算方法

IF 1.1 4区工程技术 Q4 MECHANICS

Journal of Applied Fluid Mechanics Pub Date : 2024-07-01 DOI:10.47176/jafm.17.7.2518

W. Sobieski

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引用次数: 0

摘要

文章介绍了一种确定水力阻力乘数的方法，用于快速估算非圆形截面管道的线性损失。数值方法采用有限体积法和 ANSYS Fluent 软件。研究是在湍流条件下进行的，涵盖两个雷诺数范围：10,000至100,000（10例）和100,000至1,000,000（5例）。文章的第一部分介绍了圆管的损耗计算，以及网格测试和误差估算。第二部分包括对一系列具有不同选定截面形状的管道进行的计算：半圆、四分之一圆、正方形、长宽比为 2:1 和 3:1 的矩形、等腰三角形和等边三角形。文章的最后一部分讨论了线性损耗和每种测试形状的水力阻力乘数的计算。结果发现，根据形状的不同，该系数在 1.33 到 2.2 之间，雷诺数的影响相对较小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Estimation Methodology of Pressure Losses in Non-circular Pipes

The article presents a methodology for determining the hydraulic resistance multiplier, used for a rapid estimation of linear losses in pipes with non-circular cross-sections. The numerical approach was applied using the Finite Volume Method and the ANSYS Fluent software. The research was conducted under turbulent flow conditions, covering two Reynolds number ranges: 10,000 to 100,000 (10 cases) and 100,000 to 1,000,000 (5 cases). The first section of the article presents calculations of losses for a circular pipe, accompanied by a mesh test and error estimation. The second section includes calculations conducted for a series of pipes with various selected cross-sectional shapes: half-circle, quarter-circle, square, rectangles with aspect ratios of 2:1 and 3:1, isosceles triangle, and equilateral triangle. The last section of the article discusses the calculation of linear losses and the hydraulic resistance multiplier for each tested shape. It was found that this coefficient ranged from 1.33 to 2.2, depending on the shape, with the influence of the Reynolds number being relatively insignificant.

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来源期刊

Journal of Applied Fluid Mechanics THERMODYNAMICS-MECHANICS

CiteScore

2.00

自引率

20.00%

发文量

138

审稿时长

>12 weeks

期刊介绍： The Journal of Applied Fluid Mechanics (JAFM) is an international, peer-reviewed journal which covers a wide range of theoretical, numerical and experimental aspects in fluid mechanics. The emphasis is on the applications in different engineering fields rather than on pure mathematical or physical aspects in fluid mechanics. Although many high quality journals pertaining to different aspects of fluid mechanics presently exist, research in the field is rapidly escalating. The motivation for this new fluid mechanics journal is driven by the following points: (1) there is a need to have an e-journal accessible to all fluid mechanics researchers, (2) scientists from third- world countries need a venue that does not incur publication costs, (3) quality papers deserve rapid and fast publication through an efficient peer review process, and (4) an outlet is needed for rapid dissemination of fluid mechanics conferences held in Asian countries. Pertaining to this latter point, there presently exist some excellent conferences devoted to the promotion of fluid mechanics in the region such as the Asian Congress of Fluid Mechanics which began in 1980 and nominally takes place in one of the Asian countries every two years. We hope that the proposed journal provides and additional impetus for promoting applied fluids research and associated activities in this continent. The journal is under the umbrella of the Physics Society of Iran with the collaboration of Isfahan University of Technology (IUT) .