在使用ICEM產生網格,輸出至CFX-Solver進行計算時發生以下問題:

+--------------------------------------------------------------------+ | ERROR #002100012 has occurred in subroutine cVolSec.
|
| Message: | | A negative element volume has been detected. This is a fatal |

| error and execution will be terminated. The location of the first |

| negative volume is reported below. | | Volume : -0.6014E-19 |

| Location : ( -0.50752E-01, -0.11741E+01, -0.45800E+02) | +--------------------------------------------------------------------+


遇到這種negative element volume問題通常書現在動態網格會是流固耦合以及使用block方法產生結構網格的情形上,在自適性非結構網格上比較少出現 


這很有可能是在ICEM裡smooth網格quality的時候所產生的negative volume,關於這個問題,我在CFX Online的論壇上有找到人家提供的方法,也就是在smooth網格的時候,把"penta"這項點選為Freeze,就可以解決這樣的問題。


Smooth elements trick  



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