用fluent模拟化学反应 Gauss_Elimination :singular matrix

青色草原11

1.Warning: Mass_Diffusivity: invalid (zero) diffusivity.
  Please check material properties.
   
Primitive Error at Node 4: Gauss_Elimination: singular matrix.


Primitive Error at Node 3: Gauss_Elimination: singular matrix.
望高手指教，我查看了Mass_Diffusivity，和以前设置的一样kinetic theory，并不存在问题，请高人指点。
2.接着我尝试关闭Mass Deposition Source.又出现以下问题，
divergence detected in AMG solver: species-0
divergence detected in AMG solver: species-3
divergence detected in AMG solver: species-5
divergence detected in AMG solver: species-6
Warning: Mass_Diffusivity: invalid (zero) diffusivity.
  Please check material properties.

Primitive Error at Node 9: floating point exception。求高手指点一二
3. temperature limited to 1.000000e+000 in 6078821 cells on zone 2 in domain 1
  temperature limited to 5.000000e+003 in 266877 cells on zone 2 in domain 1

Warning: Mass_Diffusivity: invalid (zero) diffusivity.
  Please check material properties.又是怎么回事？

[ 本帖最后由 青色草原11 于 2012-11-7 21:27 编辑 ]