Calculation of the Equivalent Diameter in the Pipeline

Journal of Liaoning Petrochemical University ›› 2005, Vol. 25 ›› Issue (3): 69-70.

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Calculation of the Equivalent Diameter in the Pipeline

Vocational and Technical College , Liaoning University of Petroleum & Chemical Technology ,
Fushun Liaoning 113008, P .R .China

Received:2005-03-21 Published:2005-03-25 Online:2005-03-25

管道当量直径的计算

王静波

辽宁石油化工大学职业技术学院, 辽宁抚顺113008

作者简介:王静波(1965 -), 男, 辽宁本溪市, 副教授, 硕士。

Abstract

Abstract:

　 The paper studied the conversion of flux and flowing speed equivalent diameter' s friction resistance of unit length in rectangular pipeline , which had been adopted in design calculation of hydromechanics .Friction resistance of unit length of rectangular pipeline under the two definitions was analyzed and demonstrated theoretically .It' s concluded for rectangular pipeline in the same design condition, while searching for friction resistance of unit length of rectangular pipeline in linear diagraph by adopting flux and flowing speed equivalent diameter , obtained results are different .Thus, it' s difficult to ensure result optimization of other design scheme .

Key words: Flux equivalent diameter , 　Flowing speed equivalent diameter , 　Frictional resistance of unit length

摘要： 就我国现行的、在流体力学设计计算中通常采用的流速当量直径及流量当量直径, 在矩形管道单位长度摩擦阻力的换算进行研究。从理论上对两个定义下的矩形管道单位长度摩擦阻力进行了分析和论证。结果表明, 对于同一设计条件下的矩形管道, 当分别采用流速当量直径和流量当量直径在管道单位长度摩擦阻力线算图中查找矩形管道单位长度摩擦阻力时, 所得结论并不相等。这样, 其他设计方案结论的最优化也难以保证。

关键词: 　流量当量直径, 　流速当量直径, 　单位长度摩擦阻力

WANG Jing -bo. Calculation of the Equivalent Diameter in the Pipeline[J]. Journal of Liaoning Petrochemical University, 2005, 25(3): 69-70.

王静波. 管道当量直径的计算[J]. 辽宁石油化工大学学报, 2005, 25(3): 69-70.

Calculation of the Equivalent Diameter in the Pipeline

管道当量直径的计算

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