| 非牛顿流体在正弦波壁管内的减阻特性 |
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| 引用本文： | 马宗豪,卞永宁.非牛顿流体在正弦波壁管内的减阻特性[J].实验流体力学,2010,24(5):31-35. |
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| 作者姓名： | 马宗豪 卞永宁 |
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| 作者单位： | 大连理工大学工业装备与结构分析国家重点实验室,辽宁,大连,116024 |
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| 基金项目： | 工业装备结构分析国家重点实验室开放基金项目(S09203); 辽宁省自然科学基金项目(20072180) |
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| 摘 要： | 通过添加高分子表面活性剂来有效降低流动阻力在水处理和石油开采等行业中具有重要的现实意义.实验研究了聚丙烯酰胺聚合物(PAM)溶液在正弦波壁管内的减阻特性.研究发现,PAM溶液在层流区域具有明显的减阻作用,在湍流区域却不是很明显;同时在波壁管内存在一个PAM的最佳减阻浓度.另外,通过 f-Re曲线发现PAM溶液的过渡域转捩点比牛顿流体明显提前,流动可视化结果验证了上述结论;应用Fluent进行数值模拟得到的数值结果与实验基本吻合.
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| 关 键 词： | 非牛顿流体 正弦波壁管 最佳减阻 聚丙烯酰胺 剪切变稀 |
Drag reduction of non-Newtonian fluid in a sinusoidal wavy-walled tube |
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| MA Zong-hao,BIAN Yong-ning.Drag reduction of non-Newtonian fluid in a sinusoidal wavy-walled tube[J].Experiments and Measur in Fluid Mechanics,2010,24(5):31-35. |
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| Authors: | MA Zong-hao BIAN Yong-ning |
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| Institution: | MA Zong-hao,BIAN Yong-ning(State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | It is very significant to effectively reduce the flow resistance by adding polymeric surfactants in water disposing and petroleum industry.In this study,the characteristics of the drag reduction of polyacrylamide(PAM) polymer solution in a sinusoidal wavy-walled tube were conducted.It is found that in the laminar flow region,the PAM polymer solution displays more distinct drag reduction than that in the turbulent flow region.There exists an optimum drag reduction concentration in the wavy-walled tube.It is ... |
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| Keywords: | non-Newtonian fluid sinusoidal wavy-walled tube optimal drag reduction polyacrylamide shear thinning |
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