Reply To: using a solution as a starting point

[Rob]

If you use the interpolation approach it's usually a good idea to initialise first, then read the interpolation file. That's more for changes in the domain or models as you may not have all the data you need in the interpolation file. 

If you just change the vector do NOT initialise and just hit iterate as normal: the cell data is already present. 

In both cases the residuals will spike and you may not see "good" convergence as the solution is very close to the starting value. Hence monitors & flux checks may be needed.