CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   OpenFOAM Running, Solving & CFD (https://www.cfd-online.com/Forums/openfoam-solving/)
-   -   Mesh movement accumulation error??? (https://www.cfd-online.com/Forums/openfoam-solving/94268-mesh-movement-accumulation-error.html)

lakeat November 10, 2011 13:12

Mesh movement accumulation error???
 
Dear all,

Help please! Is anyone working on the mesh movement?
Is the updateCoeff() the only portal to move the mesh points?
Pls correct me if I am wrong:
To use this updateCoeff() portal, one has to provide the delta_displacement to the operator::=.

But sometimes, the delta_displacement is calculated from B-A,
where,
B is the target position, and A is the old position we have now.

But I am wondering if both A and B are small numbers, isn't there going to be an accumulation of the errors?

Any ideas?


All times are GMT -4. The time now is 15:41.