ERROR #001100279,Floating point exception:Overflow
I am trying to simulate a centrifugal pump stage with transient conditions. In this case, Massflowrate and rotating speed of impeller are changing with time. I have set Total time = 1 hr and Time step= 1 min. Maximum coefficient loops are set to 3.
Unfortunately, I am getting Following error: ERROR #001100279 has occurred in subroutine ErrAction. | | Message: | | Floating point exception: Overflow Can anyone help me out plz. Thanks. |
Re: ERROR #001100279,Floating point exception:Over
Hi,
Your timesteps sound very large for a typical pump. Read the documentation section about Best practices for turbomachinery to give you some pointers. Glenn Horrocks |
Re: ERROR #001100279,Floating point exception:Over
Dear Glenn Horrocks,
Reducing time step to 1 second eliminate this error. But If I have to simulate transient behavior of my pump for 3 hours, this means total 60 x 60 x 3 = 10,800 time step iterations and with inside coefficient loop iterations, this problem becomes HUGE!. Any suggestion and idea to simulate pump transient behavior in reasonable time? |
Re: ERROR #001100279,Floating point exception:Over
Hi,
Why do you need to run for 3 hours? Surely the pump reaches steady state way before then. Also, in CFD sometimes you just have to run huge problems. That is why CFD is run on supercomputers. Glenn Horrocks |
ERROR #001100279,Floating point exception:Over
Hi friends,
I'm simulating a vver-1000 reactor pressure vessel. When I give pressure change to the interface boundaries, I encounter the same error of overflow. I'm using the k-e model, and because I'm analyzing the heat transfer in the reactor, I have to use k-e model. I change the turbulent model to SST and it answered, but can anybody helps me how to solve my problem when using k-e model. Waiting for your help! |
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