Pressure drop in mini-scale coiled tubing

被引：9

作者：

Ghobadi, M. ^{[1
]}

Muzychka, Y. S. ^{[1
]}

机构：

[1] Mem Univ Newfoundland, Fac Engn & Appl Sci, Microfluid & Multiphase Flow Res Lab, St John, NF A1B 3X5, Canada

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2014年 / 57卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Pressure drop; Fanning friction factor; Dean number; Curved tubing; STREAM-LINE MOTION; HEAT-TRANSFER; FLOW; FLUID; TUBE; AIR;

D O I：

10.1016/j.expthermflusci.2014.04.011

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In the present study, laminar, steady state flow in mini-scale coiled tubes was studied experimentally. Three different tube diameters: 1.59 mm, 1.27 mm and 1.016 mm with different lengths of I m and 0.5 m were coiled with different radius of curvature to provide data over a wide range of Reynolds numbers from 5 to 2300. An asymptotic model is developed based on the experimental results to predict the pressure drop increase based on Dean number. The results and simple model are also compared to a well-known existing model for circular tubing. The coiled tube lengths used in this study were long enough to consider the flow to be fully developed. The effects of varying curvature and tube length are also studied. The pitch of the coils is restricted to the diameter of the tube to minimize the effect of coiling. Dean number is used instead of Coiled number (modified Dean number) which allows the results to be expanded to spiral and curved tubing. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：57 / 64

页数：8

共 27 条

[1] Experimental and numerical investigation of nanofluid heat transfer in helically coiled tubes at constant wall temperature using dispersion model [J].