Hydraulic calculation for complicated apron pipeline network based on Newton iteration method

Due to such characteristics as complicated structure, frequent operation switching and fierce flow fluctuation ofthe apron pipeline network, it is difficult to conduct hydraulic simulation research. In order to better integrate the structuralparticularity of apron pipeline network with the hydraulic calculation theory of pipeline network, programming calculationwas conducted with the pipeline network simplified and divided into 3 parts, and for the circular section at the core, pressurebased Newton iteration method was adopted for calculation. In order to verify the accuracy of the model, the specificworking conditions were selected, the calculation results were compared with the PipePhase simulation results and checked, and the comparison results were within the reasonable error range. The solutions were elaborated in detail for the problemsof adapting the fluid flow direction in the pipe, establishing a reasonable relationship between the information of fuelingorder and the bleed-off discharge, and the pressure distribution of the fuel hydrant. The results show that the pressure-basedNewton iteration method with consideration to the particularity of apron pipeline network has good iterative convergenceand accuracy, and is suitable for the hydraulic calculation of apron oil pipeline network.