| 环形流道流体阻力特性实验研究 |
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| 引用本文： | 范佳,冯殿义.环形流道流体阻力特性实验研究[J].实验流体力学,2011,25(1):13-16. |
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| 作者姓名： | 范佳 冯殿义 |
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| 作者单位： | 辽宁工业大学机械工程及自动化学院,辽宁,锦州,121001 |
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| 基金项目： | 辽宁省重大科技攻关项目(2006219008) |
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| 摘 要： | 针对环形流道下流体阻力特性较圆管阻力特性存在差异,对不同尺寸间隙的环形流道流体阻力特性进行了实验研究.依据圆管流体流动特性原理,推导出摩擦阻力计算公式,采集实验数据、计算实验结果,并对实验结果进行比较、分析.结果表明,环形通道流动特性与流道间隙大小有关,认为间隙为2.5mm是环形通道流动特性的临界点.研究发现,间隙尺寸大于2.5mm时摩擦阻力系数与理论计算相符,流态转捩雷诺数与常规尺寸基本吻合;间隙小于2.5mm为窄环形通道,窄环形流道流体阻力系数随间隙的减小而减小,流道流体流态转捩点明显提前,并且间隙值越小流态转捩雷诺数越小.
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| 关 键 词： | 窄环形流道 摩擦阻力特性 单相流动 |
Experimental investigation of flow friction characteristic in annuli |
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| FAN Jia,FENG Dian-yi.Experimental investigation of flow friction characteristic in annuli[J].Experiments and Measur in Fluid Mechanics,2011,25(1):13-16. |
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| Authors: | FAN Jia FENG Dian-yi |
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| Institution: | FAN Jia1,2,FENG Dian-yi1(1.Mechanical engineering and automated institute of Liaoning University of Technology,Jinzhou Liaoning 121001,China,2.Dalian Wanyang Industry Co.,Ltd,Dalian Liaoning 116100,China) |
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| Abstract: | Considering the difference between annuli and circular pipe in fluid friction characteristics,Fluid friction experiment of different size of Annuli was carried out.Fluid friction is derived according to the principle of circular pipe fluid flow characteristic,and the calculation and analysis has been made on the basis of dates gained from the experiment.It was found that the gap size of the narrow annuli has great influence to the flow characteristic,and friction factor goes down with decrease of the gap si... |
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| Keywords: | narrow annuli fluid friction characteristic single-phase flow |
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