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Forum: CFX

February 29, 2016, 11:29

Replies: 21

Fatal overflow in linear solver

Views: 9,229

Posted By dengemunzur

Hi Glenn, I used cylindrical coordinates...

Hi Glenn,

I used cylindrical coordinates just to define the flow direction. And I experienced that CFX does the transformation itself. Also, I tried cartesian coordinates and it did not coverge. ...

Forum: CFX

February 28, 2016, 07:24

Replies: 21

Fatal overflow in linear solver

Views: 9,229

Posted By dengemunzur

Hi Glenn, The outpuy file I sent belongs to...

Hi Glenn,

The outpuy file I sent belongs to a linear cascade arrangement, not annular cascade. In order to define flow direction, I used cylindrical coordinates. I got the velocity components from...

Forum: CFX

February 26, 2016, 08:03

Replies: 21

Fatal overflow in linear solver

Views: 9,229

Posted By dengemunzur

Fatal over flow error

Hi,

I am sending one of the out files. Physical time scale was 0.001 in this case.

Thanks

Forum: CFX

February 26, 2016, 06:44

Replies: 21

Fatal overflow in linear solver

Views: 9,229

Posted By dengemunzur

Thanks Glenn. I will run a transient...

Thanks Glenn.

I will run a transient simulation considering your suggestions.

Maxim, I started from auto time scale then tried various time scales.

I just ended a simulation. The...

Forum: CFX

February 26, 2016, 05:16

Replies: 21

Fatal overflow in linear solver

Views: 9,229

Posted By dengemunzur

Hi Maxim, I think I did the all steps. I...

Hi Maxim,

I think I did the all steps. I tried to get a thinner boundary layer since very high velocity values near the suction side, at singular points.

I also tried transient simulations....

Forum: CFX

February 26, 2016, 04:49

Replies: 21

Fatal overflow in linear solver

Views: 9,229

Posted By dengemunzur

Fatal over flow error

Hi Maxim,

I tried different time scales and meshes for the calculations.

I thought it may be due to min value of "Orthog. Angle", therefore I tried to improve the mesh. Min "Orthog. Angle"...

Forum: CFX

February 19, 2016, 04:56

Replies: 21

Fatal overflow in linear solver

Views: 9,229

Posted By dengemunzur

Fatal

Hi Maxim,

I have checked and tried most of them but transient simution. I will run a transient simulation in order to determine an appropriate time scale. Then I will let you know.

In my...

Forum: CFX

February 19, 2016, 04:05

Replies: 21

Fatal overflow in linear solver

Views: 9,229

Posted By dengemunzur

Fatal over flow error

Hi,

I am trying to simulate an axial flow turbine rotor in CFX. I used Meshing tool to generate mesh. A fully hexagonal mesh has been generated. In CFX Solver, after 20-25 iterations simulation...

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