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自己还在琢磨,看看有没有人也有类似的问题,讨论一下。
物理模型: (模拟套管环腔)------ 2维矩形流道,一侧加热,一侧绝热,定压定流量,超临界水。
边界条件: 进口定温,速度为developed velocity profile(由粗网格计算获得),Domain reference pressure: 23.5 MPa, 出口边界条件,relative pressure: 0 MPa. 考虑浮力。
网格划分: 2维 conformal grid (旋转一层产生volumn),沿半径方向在加热侧refine (y+<1),考虑到Aspect ratio 不能太大(通道宽1mm,长600mm),最后划分了3,000,000个nodes.
并行计算: 16个cpu, 入口速度和其他初始参数采用粗网格计算结果。
计算十几步之后,出现出行计算超范围问题,主要是温度超范围,目前还没有想到好的解决方法,
Parallel run: Received message from slave
-----------------------------------------
Slave partition : 16
Slave routine : EX_TABLE
Master location : End of Continuity Loop
Message label : 009100008
Message follows below - :
+--------------------------------------------------------------------+
| ****** Notice ****** |
| While evaluating Density, |
| Static Temperature |
| went outside of its lower limit. Its minimum value was |
| 4.6359E+01. The bounds error was handled by extrapolation. |
| If this situation persists, consider increasing the table range. |
+--------------------------------------------------------------------+
Parallel run: Received message from slave
-----------------------------------------
Slave partition : 3
Slave routine : EX_TABLE
Master location : RCVBUF,MSGTAG=1020
Message label : 009100008
Message follows below - :
+--------------------------------------------------------------------+
| ****** Notice ****** |
| While evaluating Thermal Conductivity, |
| Static Temperature |
| went outside of its lower limit. Its minimum value was |
| 4.7875E+01. The bounds error was handled by extrapolation. |
| If this situation persists, consider increasing the table range. |
+--------------------------------------------------------------------+
模型比较简单,特别的地方在于窄通道几何体,以及超临界水。 已经将.out文件上传, 有兴趣的兄弟讨论一下,呵呵
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