• Since if the frictional resistance coefficient is a function of relative roughness, then the form resistance coefficient is independent of the Reynolds number.

    流线型物体表面摩擦阻力系数仅为相对粗糙度函数形状阻力系数与雷诺数无关

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  • The variation of fouling resistance and frictional resistance coefficient of heat exchanger using connate Yangtze River water as cooling water is tested experimentally.

    通过实验方法测试了原生长江水冷却水换热器污垢热系数变化

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  • The model of laminar flow in tubes in rolling motion is established. The dimensionless correlation of velocity is derived, and the correlation of frictional resistance coefficient is also obtained.

    建立了摇摆条件下圆管内层流流动模型推导出无量纲化的速度表达式,得到摩擦阻力系数关系式。

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  • The standard value of ventilation resistance and coefficient of frictional resistance is very significant to the ventilation management of the mine as the basic data.

    标准阻值标准摩擦阻力系数作为矿井通风技术管理基本资料对矿井通风管理具有重要意义。

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  • The standard value of ventilation resistance and coefficient of frictional resistance is very significant to the ventilation management of the mine as the basic data.

    标准阻值标准摩擦阻力系数作为矿井通风技术管理基本资料对矿井通风管理具有重要意义。

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