[petsc-users] TS_SSP implementation for co-dependent variables

[Smith, Barry F.]

  How are you integrating the two sets of variables now? 

 Would it be possible to just integrate all five variables together and not have any of these difficulties? 
  
  Barry



> On Oct 9, 2019, at 6:03 PM, Manuel Valera via petsc-users <petsc-users at mcs.anl.gov> wrote:
> 
> Hello,
> 
> I have a set of equations which are co-dependent when integrating in time, this means the velocities u,v,w need a component from the Temperature and Salinity integration at the same intermediate step. Same for Temperature and Salinity, which need the current velocities (at the intermediate time stages) to be computed accurately.
> 
> My question is, how to feed the information of the updated temperature inside the velocity, and vice-versa? this would be equivalent, I think, to obtaining the intermediate stages of the time integration so they can be the input for the next intermediate stage. 
> 
> Thanks,