[Manuel_Aero]

Hello everybody,

My investigation involve steady state simulations on a turbocharger turbine stage. Basically, i have obtained the solution data at the outlet of the Volute in Fluent. Now i need to use this outlet values from the volute (Just Total Pressure, Static Pressure, Mass Flow, Total Temperature and Axial Velocity) as inlet boundary conditions in CFX to simulate the flow around the turbine stage (Stator and Rotor) which is phisically after the volute outlet.

The obvious thing is just read the volute outlet values from the CFD Post in Fluent and digit them in the inlet boundary condition in CFX but i just would like to know if there is a proper and more accurate way to do so .

Many thanks to everyone, all the best.

[Opaque]

The standard procedure for that would be :

1 - Import your Fluent solution into CFD-Post
2 - Select File/Export/Export Surface
3 - Select BC Profile option
4 - Fill out the panel for the type of BC you would like to use in CFX
5 - export the profile

6 - In CFX-Pre, goto Tools/Initialize Profile Data
7 - Select your .csv file, import
8- Go to your boundary, select the profile from the list, and press Generate Values
9 - Verify all the data from the profile got connected as you expected,
10 - Apply, and you are done with this BC

[Manuel_Aero]

Many thanks for your reply Opaque. I will try asap to do so.

[Manuel_Aero]

Originally Posted by Opaque

The standard procedure for that would be :

1 - Import your Fluent solution into CFD-Post
2 - Select File/Export/Export Surface
3 - Select BC Profile option
4 - Fill out the panel for the type of BC you would like to use in CFX
5 - export the profile

6 - In CFX-Pre, goto Tools/Initialize Profile Data
7 - Select your .csv file, import
8- Go to your boundary, select the profile from the list, and press Generate Values
9 - Verify all the data from the profile got connected as you expected,
10 - Apply, and you are done with this BC

The whole process works perfectly, i was able to correctly import the Boundary Profile and verify the correct positioning and direction vectors but when i try to run the case an error appear:

Parallel run: Received message from slave
-----------------------------------------
Slave partition : 2
Slave routine : ErrAction
Master location : Message Handler
Message label : 001100279
Message follows below - :

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| The flow direction could not be determined at boundary patch |
| "S1 Inlet". This error is triggered when at any point on the bou- |
| ndary patch all components of the specified direction vector are |
| "0". Please change the direction specification and re-run the cas- |
| e. |
| |
+--------------------------------------------------------------------+
Slave: 2 ----------------------------------
Slave: 2 Error in subroutine CAL_VELDIR_BCS :
Slave: 2 Error calculating boundary condition for Velocity Direction
Slave: 2 GETVAR originally called by subroutine CAL_BCP_Aver_IP

Parallel run: Received message from slave
-----------------------------------------
Slave partition : 2
Slave routine : ErrAction
Master location : Message Handler
Message label : 001100279
Message follows below - :

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| Stopped in routine GV_ERROR |
| |
| |
| |
| |
| |
+--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine MESG_RETRIEVE. |
| Message: |
| Stopping the run due to error(s) reported above |
| |
| |
| |
| |
| |
+--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| An error has occurred in cfx5solve: |
| |
| The ANSYS CFX solver exited with return code 1. No results file |
| has been created. |
+--------------------------------------------------------------------+

End of solution stage.

i guess that, as the message report, the problem it's the direction specification.From what i've understood, it say that in at least one point of the patched boundary all components of the specified direction vector are 0. I don't know if it refers to the walls since in the Boundary Profile there is a No Slip Wall Condition. Could someone provide some tips?

Find attached some pictures of the problem.

Many thanks.

[Manuel_Aero]

Originally Posted by Manuel_Aero

The whole process works perfectly, i was able to correctly import the Boundary Profile and verify the correct positioning and direction vectors but when i try to run the case an error appear:

Parallel run: Received message from slave
-----------------------------------------
Slave partition : 2
Slave routine : ErrAction
Master location : Message Handler
Message label : 001100279
Message follows below - :

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| The flow direction could not be determined at boundary patch |
| "S1 Inlet". This error is triggered when at any point on the bou- |
| ndary patch all components of the specified direction vector are |
| "0". Please change the direction specification and re-run the cas- |
| e. |
| |
+--------------------------------------------------------------------+
Slave: 2 ----------------------------------
Slave: 2 Error in subroutine CAL_VELDIR_BCS :
Slave: 2 Error calculating boundary condition for Velocity Direction
Slave: 2 GETVAR originally called by subroutine CAL_BCP_Aver_IP

Parallel run: Received message from slave
-----------------------------------------
Slave partition : 2
Slave routine : ErrAction
Master location : Message Handler
Message label : 001100279
Message follows below - :

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| Stopped in routine GV_ERROR |
| |
| |
| |
| |
| |
+--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine MESG_RETRIEVE. |
| Message: |
| Stopping the run due to error(s) reported above |
| |
| |
| |
| |
| |
+--------------------------------------------------------------------+

+--------------------------------------------------------------------+
| An error has occurred in cfx5solve: |
| |
| The ANSYS CFX solver exited with return code 1. No results file |
| has been created. |
+--------------------------------------------------------------------+

End of solution stage.

i guess that, as the message report, the problem it's the direction specification.From what i've understood, it say that in at least one point of the patched boundary all components of the specified direction vector are 0. I don't know if it refers to the walls since in the Boundary Profile there is a No Slip Wall Condition. Could someone provide some tips?

Find attached some pictures of the problem.

Many thanks.

My workflow it's quite simple, i go through the setup thanks to the Turbo Mode, whene i finish to set eveything i import the Boundary Profile as Opaque said and generate it in the inlet substituting the previous inlet boundary condition with my profile. I guess the problem lies in the Imported Boundary Profile itself because i can see from the pictures that in some points there are no vectors which means that the value it's 0 in those points. i'm trying to continue the simulation of the volute increasing the residual target hoping that i can reach higher accuracy in the Boundary Profile that i import from it.