Effects of Geometric Parameters on the Inner Surface Pressure of Elbow Pipe and the Establishment of Pressure Model

摘要

Elbows of oil pipeline were adopted to study the effect of the variation of the geometric parameters of the inner diameter d, bending degree k =R/d and bending angle A on the distribution regularity of the inner surface pressure, with the simulation by the FLUENT software. Based on the analysis, the pressure computational formula on the dangerous cross section α=45° was built by using 1stOpt software. The values computed by the formula agree well with the ones simulated by FLUENT, which lays the groundwork for strength check and structural design of the elbow pipe.