Re: Problems with Franke's inverse distance weighting interpolation

deltaquat...@xxxxxxxxx ha scritto:

Hello,

I must use Franke's inverse distance weighting interpolation, as
described in [1], to interpolate the data of a known analytical field.
The field is 2D potential flow around a cylinder, with values taken at
the centers of a Cartesian grid. The interpolation is to the boundary
of the cylinder, that is, to a circle which cuts the Cartesian cells.
The error reduction with grid refinement is only first order, although
in [2] similar methods are reported to be nearly second order accurate.
[..]

Whoops! I forgot the references!

[1] Tseng, Y.-H., Ferziger, J. H., " A ghost-cell immersed boundary
method for flow in complex geometries", Journal of Computational
Physics 192 (2003) 593-623.
[2] Frink, N. T., "Tetrahedral Unstructured Navier-Stokes Method for
Turbulent Flows", AIAA JOURNAL, Vol. 36, No. 11, November 1998,
1975-1982.

Sorry for the omission,

Greetings,

deltaquattro

.