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油气管输工程中力图描述影响冲蚀因素参数的API方程为: V_0=C/ρ~(1/2)式中:ρ——流体密度 kg/m~3 C——常数,122～152 V_0——最大允许速度 m/s 此方程专用以计算冲蚀的极限速度,但常被扩展去计算冲蚀的临界速度。此时,临界速度是指从管子表面移去防腐剂膜或阻止膜生成的一种流体速度。也可以说,临界速度是从管壁上剥去有保护作用的腐
In the oil and gas pipeline project, the API equation that tries to describe the parameters that affect the erosion factor is: V_0 = C / ρ ~ (1/2) where: ρ - fluid density kg / m ~ 3 C-- constant, 122-152 V_0 - Maximum allowable speed m / s This equation is specific to calculate the ultimate speed of erosion but is often extended to calculate the critical rate of erosion. In this case, the critical speed refers to a fluid velocity that removes the preservative film from the surface of the tube or prevents the film from forming. It can also be said that the critical speed is to strip away the protective effect from the pipe wall