Re: [Libmesh-users] Adjoint refinement estimator and patch recovery

2017-02-02 Thread Vikram Garg
Hello Salazar, You can check out adjoints example 3 (examples/adjoints/adjoints_ex3) to see an example of a Weighted Patch Recovery estimator. In this example, we compute patch recovery error estimates for each primal and dual variable in the appropriate norms, and then weight

Re: [Libmesh-users] Adjoint refinement estimator and patch recovery

2017-02-02 Thread Paul T. Bauman
Check out AdjointResidualErrorEstimator which computes the adjoint on the same space but then uses PatchRecovery (or whatever you want) on the primal and duals to get an error indicator to drive AMR. Not a great estimate of the actual error, but produces decent meshes for controlling QoI error.

Re: [Libmesh-users] Adjoint refinement estimator and patch recovery

2017-02-02 Thread Roy Stogner
On Thu, 2 Feb 2017, Salazar De Troya, Miguel wrote: > The current implementation of AdjointRefinementEstimator does a > uniform refinement to obtain an adjoint solution in a richer space. > This is a necessary condition to obtain an error estimate in a > quantity of interest. My question is: Is i