| 环形截面柱形管中粘性流体的研究 |
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| 引用本文： | 阿列斯塔科A·萨卢哈尼扬.环形截面柱形管中粘性流体的研究[J].北京建筑工程学院学报,2010,26(2):20-25. |
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| 作者姓名： | 阿列斯塔科A·萨卢哈尼扬 |
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| 作者单位： | 埃里温建筑工程大学,亚美尼亚,埃里温,375009 |
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| 摘 要： | 对环形截面柱形管中粘性流体的稳流和非平稳流进行了研究,得到了速度和粘性应力分布的规律,并且提出了能量损失的计算方法.通过Nave-Stocks方程式和用Weber函数对它们积分,对非平稳流进行了研究.通过建立数学模型,得到在一般边界条件下的封闭解.当流体处于静止状态并且在t=0时,压力系数变化率在流体上产生作用,在通解的基础上得到对非平稳流的解.同时获得瞬时和平均速度、动能和能量损失的变化规律.通过数值计算,对瞬时和平均速度,动能和动能损失系数变化量,以及由于粘性应力而造成的一般能量损失实验结果图进行了绘制.
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| 关 键 词： | 有效截面 粘性应力 粘性流体 稳流 动量 能量损失 |
Study of Viscous Fluid Flow in Ring Cross-Sectional Cylindrical Pipes |
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| Arestak A.SARUKHANYAN.Study of Viscous Fluid Flow in Ring Cross-Sectional Cylindrical Pipes[J].Journal of Beijing Institute of Civil Engineering and Architecture,2010,26(2):20-25. |
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| Authors: | Arestak ASARUKHANYAN |
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| Affiliation: | Arestak A.SARUKHANYAN(Yerevan State University of Architecture , Construction,Yerevan 375009,Armenia) |
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| Abstract: | The paper presents steady and unsteady flow of viscous fluid in a pipe of ring cross-section.Regularities of velocity and friction stress distribution have been obtained and an calculation method for energy losses has been suggested.The study of unsteady flow was carried out by Nave-Stocks equations and for their integration the Weber function was employed.To develop a mathematical model closed solutions for the general boundary conditions have been obtained.Based on general solutions of the problem solutio... |
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| Keywords: | effective cross-section friction stress viscous fluid steady flow momentum energy loss |
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