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北京石油化工学院2026年研究生招生接收调剂公告
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妃子笑16888

新虫 (初入文坛)

[求助] UDF

请教一下大家,就是想输入一个x轴上的加速度随时间变化的曲线,用书上的程序计算不了,用我的程序能计算但结果不对,请问一下是为啥
/*******************************************************************/
/* UDF for specifying an x-momentum source term in a spatially     */
/* dependent porous media                                          */
/*******************************************************************/

#include "udf.h"

#define C2 100.0

DEFINE_SOURCE(xmom_source, c, t, dS, eqn)
{
  real x[ND_ND];
  real con, source;

  C_CENTROID(x, c, t);
  con = C2*0.5*C_R(c, t)*x[1];

  source = -con*fabs(C_U(c, t))*C_U(c, t);
  dS[eqn] = -2.*con*fabs(C_U(c, t));

  return source;
}
计算时就会出现这种情况

==============================================================================

Node 0: Process 8516: Received signal SIGSEGV.

==============================================================================

==============================================================================

Node 1: Process 8972: Received signal SIGSEGV.

==============================================================================

==============================================================================

Node 2: Process 8036: Received signal SIGSEGV.

==============================================================================

==============================================================================

Node 4: Process 1380: Received signal SIGSEGV.

==============================================================================

==============================================================================

Node 5: Process 7764: Received signal SIGSEGV.

==============================================================================

==============================================================================

Node 6: Process 9360: Received signal SIGSEGV.

==============================================================================

==============================================================================

Node 3: Process 7944: Received signal SIGSEGV.

==============================================================================
MPI Application rank 0 exited before MPI_Finalize() with status 2
The fl process could not be started.

这是我自己的代码,能计算但感觉没起到什么效果
/******************************************************************
The acceleration in the x-axis direction changes with time
*******************************************************************/
#include "udf.h"
#define g 9.8
DEFINE_SOURCE(accelaration_source, c, t, dS, eqn)
{
  real x[ND_ND];
  real source;
  real a = RP_Get_Real ("CURRENT_TIME" );
  source = -0.125*CURRENT_TIME*g+0.5*g;
  source=x[0];
  dS[eqn] = 0.0;
  return source;
}
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MoonLee777

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2楼2018-04-04 20:53:48
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yx0918yogurt

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引用回帖:
2楼: Originally posted by MoonLee777 at 2018-04-04 20:53:48
试试单核

Node 0: Process 4632: Received signal SIGSEGV.

================================================== ============================

================================================== ============================

Node 1: Process 4996: Received signal SIGSEGV.

================================================== ============================

================================================== ============================

Node 2: Process 1220: Received signal SIGSEGV.

================================================== ============================

================================================== ============================

Node 3: Process 1340: Received signal SIGSEGV.
The f1 process could not be started.

试过单核计算也没有用,请问您还知道其他解决办法吗?
3楼2019-07-30 10:22:14
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