On 09/18/2016 03:43 PM, JAEKWANG KIM wrote:

To, Daniel Arndt.
Also, I didn't understand what you meant by
_"Are you using a Mapping of the same order as your velocity ansatz space is?"_

You will want to look at the step-10 and step-11 tutorial programs to see what mappings are.

You can't expect a high accuracy for a boundary integral if the boundary is not accurately represented.


Wolfgang Bangerth          email:                 bange...@colostate.edu
                           www: http://www.math.colostate.edu/~bangerth/

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