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淹鱼塘

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[求助] 求问fluent压力入口边界udf计算发散

想要以水位高度为入口边界条件,编写udf:网格高度相对于入口高度(9m)对应的水压力,设置压力入口边界,计算没多久就出现浮点数超出的发散情况。求各位大佬指导是哪里出了问题,udf代码如下:

#include"udf.h"
DEFINE_PROFILE(inlet_p, thread, position)
{
        real y, y0;
        real x[ND_ND];
        face_t f;
        y0 = 9.0;
        begin_f_loop(f, thread)
        {
                F_CENTROID(x, f, thread);
                y = y0-x[1];
                if (y <= 9.11) {
                        F_PROFILE(f, thread, position) = 9810.0 * y;
                }
        }
        end_f_loop(f, thread)
}
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