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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#include "udf.h"
DEFINE_PROFILE(unsteady_pressure, thread, position)
{
        real x[ND_ND];
        real y, h;
        face_t f;
        h = 14.5; /*inlet height in m*/
        begin_f_loop(f, thread)
        {
                F_CENTROID(x, f, thread);
                y = 1. - x[1] / h;
                F_PROFILE(f, thread, position) = 998.2*9.8*(h - y);
        }
        end_f_loop(f, thread)
}

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