
Regarding the convergence of the results
I have 2 doubts regarding the covergence of the results during each iteration :
1. Is the Converging nature (converging of results) of any numerical solution is if the change happening in its plot (profile) after each iteration is decreasing irrespective of whatever its profile would be ?
2.How we are knowing that the results of the iteration has converged after t=0.2s (In 1D unsteady state heat conduction),is it because of the fact that we know that for steady state(asssuming steady state has reached by t= 0.2 s) heat conduction the profile of temperature is linear .I mean should we know the exact solution of the PDEâ€™s or exact solution of the problem beforehand to reach at the conclusion of convergence ?
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