>
>
>
> One other thought:  do you have some O(h) stabilization terms present?
>  Then if you aren't refining the grid they don't get smaller...
>
>

There is a GLS stabilization term with the typical tau matrix. I have
experimented with different tau definitions, but get the same behavior.

Essentially, almost all definitions in 1-D have the form

(sum_{i=1,n_shape_funcs}    | a dNi/dx | ) ^-1

where N is the shape function and 'a' is the velocity. The numeric value of
this expression reduces as the polynomial order is increased. So, I think
that the influence of the polynomial order is included in the stabilization
matrix.

Manav
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