[Nek5000-users] logfile

[nek5000-users at lists.mcs.anl.gov]

Thanks for the information.

In my calculation, I am using a variable viscosity formulation. The
viscosity depends on the temperature. As the run proceeds the initial
residual for the TEMP gradually rises from 1E+03 until at around at
the value 6E+07, the logfile shows an error for non-positive
diffusivity. I have checked the temperature distribution which has no
such value so as to make the diffusivity negative (or zero). Please
indicate what I may be doing wrong.

Thank you
Swarandeep

On Fri, Mar 30, 2018 at 3:30 PM,  <nek5000-users at lists.mcs.anl.gov> wrote:
>
>>Step   1520, t= 7.6000000E-02, DT= 5.0000000E-05, C=  0.072 5.3831E+03 3.5403E+00
> timestep, time, dt, Courant Number, elapsed solver time, solver time of last time iteration
>
>>1520  Hmholtz TEMP      12   3.8789E-11   4.5120E+07   1.0000E-10
> timestep, solve type, iteration counter, final residual, initial residual, solver tolerance
>
> ...
>
>
> -----Original message-----
>> From:nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
>> Sent: Friday 30th March 2018 11:52
>> To: nek5000-users at lists.mcs.anl.gov
>> Subject: Re: [Nek5000-users] logfile
>>
>> The following is my logfile entry (sample lines). The first line is
>> understandable. What do the values in the third and following lines
>> denote?
>>
>>
>> ------------------------------------------------------
>> Step   1520, t= 7.6000000E-02, DT= 5.0000000E-05, C=  0.072 5.3831E+03
>> 3.5403E+00
>>              Solving for Hmholtz scalars
>>        1520  Hmholtz TEMP      12   3.8789E-11   4.5120E+07   1.0000E-10
>>        1520  Scalars done  7.6000E-02  8.3823E-02
>>              Solving for fluid
>>        1520  Helmh3 fluid      17   3.6594E-11   4.7524E-01   1.0000E-10
>>        1520  U-PRES gmres     120   1.3494E-08   4.5675E-06
>> 1.0000E-10   7.8799E-01   3.0171E+00
>>        1520  Fluid done  7.6000E-02  3.3650E+00
>> --------------------------------------------------------
>>
>> On Fri, Mar 30, 2018 at 3:05 PM,  <nek5000-users at lists.mcs.anl.gov> wrote:
>> > I am not sure what you are talking about?
>> >
>> > -----Original message-----
>> >> From:nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
>> >> Sent: Friday 30th March 2018 10:30
>> >> To: nek5000-users at lists.mcs.anl.gov
>> >> Subject: [Nek5000-users] logfile
>> >>
>> >> Hi Neks,
>> >>
>> >>      What are the entries in the logfile that is output from running
>> >> the code.  Please let me know where the entries are determined in the
>> >> code.
>> >>
>> >> Thanks
>> >> Swarandeep
>> >> _______________________________________________
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