Dear Nektar development team,
I am writing to you in order to communicate some issues which I have
experimented,while performing a mesh interpolation with FieldConvert
module.
I am originally working with a specific mesh, Mesh1, with which I have
obtained some results, chk1. Now, I want to redefine this mesh and
make it more detailed,
so I generated a new mesh, Mesh2, which has the same dimensions and
geometry as mesh1, but it is better meshed (more elements).
Then, the problem appears when I want to interpolate the solution chk1
to the new mesh, Mesh2. In order to perform this interpolation, I have
used the "interpfield"
module from FieldConvert. The output file from this operation,
file2.fld, is not correct at all, as some incoherent velocities have
appeared. Specifically,
it appeared extremely high velocities which have no reason to be. In
more detail, those velocities are located at some nodes along the
boundary of the domain of
the solution file2.fld. These high speeds have propagated and blurred
a few elements into the domain. The geometry of this boundary is a
circumference arc, and its
boundary conditions are HOutflow.
I also have tried to smooth the file2.fld by using the C0Projection
module, file2_C0.fld, but has blurred the velocities only a few.
I have attatched some photos from file2_C0.fld showing some of those
high velocities on the boundary. Must be noted that file2.fld is quite
similar to file2_C0.fld,
but less blurred.
I remain at your disposal for any doubt or clarification,
Ismael El Houas