| 引用本文: | 朱文辉,刘慈群.非牛顿流体不定常环管流研究.[J].国防科技大学学报,1993,15(1):105-110.[点击复制] |
| Zhu Wenhui,Liu Ciqun.Study of Unsteady Flow of Non-Newtonian Fluids in Annular Pipes[J].Journal of National University of Defense Technology,1993,15(1):105-110[点击复制] |
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| 非牛顿流体不定常环管流研究 |
| 朱文辉1, 刘慈群2 |
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(1.国防科技大学应用物理系，长沙;2.中科院渗流流体力学所，河北省廊坊市)
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| 摘要: |
| 本文采用积分变换的方法，找到了一类非牛顿流体在环形管道中不定常流动的解析解，并进行了数值计算，分析了非牛顿性系数和其他各参数对二阶流体不定常流动的影响，指出当二阶流体非牛顿系数相同时，环管流与一般管流比达到稳定的特征时间较短，并且相应的速度分布、平均速度分布数值均较小。在外半径相同时，环管流内壁的剪应力较之一般管流，其大小随内径而改变。环管流外壁剪应力总相应地小于内壁剪应力。 |
| 关键词: 环管，不定常，非牛顿流体，积分变换 |
| DOI： |
| 投稿日期：1991-12-12 |
| 基金项目: |
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| Study of Unsteady Flow of Non-Newtonian Fluids in Annular Pipes |
| Zhu Wenhui1, Liu Ciqun2 |
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(1.National University of Defense Technology;2.Institute of Porous flow and fluid Mechanics)
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| Abstract: |
| In this paper an analytical solution of the unsteady flow of non-Newtanian fluids in annular pipes was found by using the integral transform method. Numerical simulation was carried out. On the basis of these，a detailed analysis was made to the effects of non-Newtonian coefficient Hc and the shape factor η on the flow. The obtained conclusions may provide the engineering projection with higher reliability. |
| Keywords: unsteady flow,annular pipes,Non-Newtonian fluids,integral transform method |
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