| 壁面滑移条件下水煤浆的流动阻力和减阻特性 |
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| 引用本文： | 陈良勇,段钰锋,刘猛,赵长遂.壁面滑移条件下水煤浆的流动阻力和减阻特性[J].中国电机工程学报,2010(5). |
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| 作者姓名： | 陈良勇 段钰锋 刘猛 赵长遂 |
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| 作者单位： | 东南大学热能工程研究所; |
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| 基金项目： | 国家重点基础研究发展计划基金项目(2004CB217701,2010CB227001)~~ |
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| 摘 要： | 在中试规模的浆体输送装置上进行水煤浆直管流动阻力试验,在壁面滑移特性和流变特性分析的基础上,将水煤浆管内流动划分为3种形态,并重点研究了浓度、温度、煤粉粒径、管径和流动形态对流动阻力特性和减阻特性的影响。结果表明:当各因素变化时,流动阻力的变化通过改变流变特性和壁面流动条件实现;各因素对摩擦阻力系数和减阻率的影响规律取决于浆体所处的流动形态;在同一流动形态范围内,不同的浓度、温度、煤粉粒径或管径下,滑移减阻率随流速的变化规律具有相似性。
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| 关 键 词： | 水煤浆 流变特性 壁面滑移 阻力特性 减阻 |
Flow Resistance and Drag-reduction Properties of Coal Water Slurries in Pipe Flow With the Presence of Wall Slip |
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| CHEN Liang-yong,DUAN Yu-feng,LIU Meng,ZHAO Chang-sui.Flow Resistance and Drag-reduction Properties of Coal Water Slurries in Pipe Flow With the Presence of Wall Slip[J].Proceedings of the CSEE,2010(5). |
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| Authors: | CHEN Liang-yong DUAN Yu-feng LIU Meng ZHAO Chang-sui |
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| Affiliation: | CHEN Liang-yong,DUAN Yu-feng,LIU Meng,ZHAO Chang-sui (Institute of Thermal Engineering,Southeast University,Nanjing 210096,Jiangsu Province,China) |
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| Abstract: | Experimental study was carried out on a pilot-scale slurry transportation apparatus to determine flow resistances of coal water slurries (CWS) in pipes.Based on the analysis of wall-slip behaviors and rheological properties,three flow regimes were put forward to describe the pipe flow of the test slurries.The effects of these factors (solid concentration,slurry temperature,coal particle size,pipe diameter and the flow regime) on flow resistance properties and drag reduction were investigated.The results sug... |
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| Keywords: | coal water slurry rheological property wall slip flow resistance properties drag reduction |
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