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本文将三维势流理论应用于压水堆上腔室稳态流扬分析。计算中,采用逐次分半加速法(Romberg积分法)求解三角函数单层定积分,用级数展开近似计算第一类修正具塞尔函数。根据三维势流理论,编制了PFT-1流场分析程序,并以秦山核电厂压水堆作实例,给出了二环和四环的上腔室的速度和压力分布。
In this paper, the three-dimensional potential flow theory is applied to steady flow analysis of the upper chamber of PWR. In the calculation, the successive integral semi-accelerating method (Romberg integral method) is used to solve the trigonometric monolayer definite integral, and the first type corrective Serie function is calculated by series expansion approximation. According to the theory of three-dimensional potential flow, the PFT-1 flow field analysis program is compiled and the velocity and pressure distributions of the upper and lower rings of the second ring and the fourth ring are given by taking the PWR of Qinshan NPP as an example.