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jyt1988

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[求助] 关于fluent计算非稳态流动传热的问题

各位虫友,有个问题想请教大家。我用fluent计算非稳态流动传热,具体的说就是速度入口采用了一个正弦函数,典型的脉动流。速度初始化后监测速度随时间的变化,但是初始值不是我最初设置的值,而且幅值与我设置的正弦函数也不相符,刚接触模拟计算,对于原理不是很明白,是我哪儿里设置错了么,还是编程有问题?还请各位虫友帮忙解答一下,感激涕淋!(附udf编程)
#include "udf.h"
DEFINE_PROFILE(unsteady_velocity,thread,position)
{
face_t f;
begin_f_loop(f,thread)
{
real t=RP_Get_Real("flow-time";
F_PROFILE(f,thread,position)=2*(1+sin(2*3.14*0.5*t));
}
end_f_loop(f,thread)
}
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