[cfdhelp]

Hello,

I would like to ask you about error in CFX for Cong. Heat Transfer.
After some iterations I got ASS_GLOBCS_IAP message and solution crashed.
Task type:
CHT, Turbine Stage, solid and fluid parts
inlet: Total Pressure, Total Temperature, k-omega SST, rpm (revolution per minute)
Total Pressure and RPM are function of time and there are a few operation points - 16 operation points.
outlet:
static pressure
there is cong. heat transfer between some parts and on outer wall there is heat transfer coefficient and bulk temperature.
Periodic turbine stage is connected via Mixing Plane and top part part turbine stage is connected with solid part via Frozen rotor.
ERROR will happen in the same iterations for repetitions of the same BC or for different conditions in different iterations but it will crash.
Please does somebody know what can be cause of the error.

Thank you and regards,
Ivan
================================================== ====================
OUTER LOOP ITERATION = 776 CPU SECONDS = 3.116E+05
----------------------------------------------------------------------
| Equation | Rate | RMS Res | Max Res | Linear Solution |
+----------------------+------+---------+---------+------------------+

Parallel run: Received message from slave
-----------------------------------------
Slave partition : 6
Slave routine : ASS_GLOBCS_IAP
Master location : Message Handler
Message label : 002100088
Message follows below - :

+--------------------------------------------------------------------+
| ERROR #002100088 has occurred in subroutine ASS_GLOBCS_IAP. |
| Message: |
| Could not invert control surface Ap at the following location: |
| Domain Interface : periodic_tw_fluid |
| Location (X,Y,Z) : ( 0.68127E-03,-0.11068E-01, 0.18306E-01) |
+--------------------------------------------------------------------+

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

[weij2018]

Hello，sir, have you solved this problem? I meet the same problem when I am doing a conjugateheattransfer project. After 600 itrations, it breaks out and shows this message. Could you help me to give some advice? Thank you so much!

| ERROR #002100088 has occurred in subroutine ASS_GLOBCS_IAP. |Message:Could not invert control surface Ap at the following location: Domain Interface: A21_Comp_R1 to A21_Comp_R1 Internal 2 |Location (XY,Z) : ( 0.46967E-02,-0.38904E-01, 0.61605E-01)