Hello,

I am using CFX 11.0 and have the folowing problem with the solver. It will crash during the second iteration step and give the following error messages:

ERROR #001100279 has occurred in subroutine ErrAction. Message: Could not invert control surface Ap

ERROR #001100279 has occurred in subroutine ErrAction. Message: Stopped in routine ASS_GLOBCS_IAP

I am investigating a channel flow on the segment of a rotating disc. Hence I have set the Fluid domain on rotating about one global axis. Correspondingly I have set all boundaries as rotating, as well. I should add that I am investigating a heat tranfser problem, so I also have interfaces to my solid domain.

The error messages will not occur when the fluid domain is set on stationary. However for my problem that makes no sense physically.

I appreciate every hint on this type of problem.

Regards, Andy

I have the same problem but nobody answered to me

[Arevik]

I guess my answer is too late for both of you, but maybe it'll help somebody else one day
I've had the same problem. In my case it helped to restart the simulation with a much smaller (factor 50) timestep. Then I increased it step by step to the value I wanted. My case was a transient simulation of air between 2 concentric cylinders, where one of them was rotating (Taylor-Couette-Flow).

[Josh]

Thanks, Arevik. I'm always upset when people figure out their problem but don't update the threads.