| 通用机械能衡算方程与摩擦损失的理论计算 |
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| 引用本文： | 窦梅,南碎飞.通用机械能衡算方程与摩擦损失的理论计算[J].高校化学工程学报,1999,13(3):194-198. |
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| 作者姓名： | 窦梅 南碎飞 |
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| 作者单位： | 浙江大学化工学院传递与分离教研室!杭州３１００２７ |
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| 摘 要： | 本文导出了适用于可压缩、不可压缩流体，单相，多相流，一维，多维流动以及稳态，非稳态流动情况下的通用机械能衡算式。同时，得到了流体流动过程中摩擦损失的理论计算式，应用于圆管及几种非圆形管内的层流流动摩擦损失计算，获得了正确结果。
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| 关 键 词： | 机械能衡算 摩擦损失 层流流动 流体力学 |
Overall Mechanical-Energy-Balance Equation and Frictional Loss |
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| Dou Mei, Nan Suifei.Overall Mechanical-Energy-Balance Equation and Frictional Loss[J].Journal of Chemical Engineering of Chinese Universities,1999,13(3):194-198. |
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| Authors: | Dou Mei Nan Suifei |
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| Abstract: | The overall mechanic al -en erg y-b alan ce e qu ation is derived in this antic ie, which c an beused in a steady-state or unsteady-state system with one or multi-dimensional, monophase or multiphaseflow for compressible or incompressible fluid. In the meantime, the theoretic expression of the auctionalloss of fluid flow is obtained. The friction factors of landnar flow of an incompressible fluid in severalnon-circular pipes are calculated by means of the theoretical expression of wf. The results are identicalwith the literature. |
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| Keywords: | Mechanical energy balance Frictional loss Laminar flow Non-circular ducts |
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