CAJ | 학술논문

为了解决成品油管道经常会因积水而产生内腐蚀的问题，通过FL U EN T 建立模型，模拟了成品油输送管道内低洼爬坡段积水的相关流态，分析了油品流速、管径对积水运动状态的影响以及积水的成因。结果表明：成品油输送管道内积水的运动状态与传统的油水两相流不同，在不同管段呈现不同的流型。在上倾管段中，受成品油剪切作用与水相自身重力作用及管壁摩擦力的影响，积水在管道底部达到动态平衡，因此难以排出管道。此外，流体流速增大，管道内的积水减少，而管径增大，积水增多；流体密度增大，管道内积水减少，管道弯曲角度增大，积水减少。
위료해결성품유관도경상회인적수이산생내부식적문제，통과FL U EN T 건립모형，모의료성품유수송관도내저와파파단적수적상관류태，분석료유품류속、관경대적수운동상태적영향이급적수적성인。결과표명：성품유수송관도내적수적운동상태여전통적유수량상류불동，재불동관단정현불동적류형。재상경관단중，수성품유전절작용여수상자신중력작용급관벽마찰력적영향，적수재관도저부체도동태평형，인차난이배출관도。차외，류체류속증대，관도내적적수감소，이관경증대，적수증다；류체밀도증대，관도내적수감소，관도만곡각도증대，적수감소。
Severe internal corrosion often happens in domestic oil pipeline as a result of residual water .To solve this problem ,fluent models were built to simulate flowing states of residual wa‐ter in low‐lying and upward pipeline section .Built on these models ,the motional state of residual water was studied ,along with its cause of formation and how diameters of the pipe exert an influ‐ence on it .The results show that different flow patterns of residual water appear in different pipeline sections ,which is different from that of the traditional two‐phase flow .In the upward section of the pipe ,the residual water can attain to a dynamic equilibrium under the influence of the oil ,gravity of itself and friction exerted by the pipe wall ,so it is very hard to be drained a‐w ay .Besides ,w hen increasing flow velocity and decreasing pipe diameter ,the amount of residual w ater increase .T he fluid density and pipe bending angle increases ,the amount of residual w ater reduce .Based on these results ,further study will be focused on the way to drain off the water to reduce the corrosion of the inner wall of pipeline .