Re: [ESPResSo-users] map_position_to_lattice error

[Ivan Cimrak]

Hi Saeed,

Your problem could have several reasons, basically, particles in you object just blow up, which means that the forces are too large. This could be for example because you have too high elastic coefficients. The ones in the sample file are calibrated for smaller meshes.

Could you please provide the tcl script that you are using?

Ivan

On 5/18/16 9:05 PM, Saeed Momeni Bashusqeh wrote:

Dear Espresso Users

I'm trying to simulate a deformable object (RBC) in fluid. For that, I myself created a triangulated mesh for the object using GMSH (it has 1026 nodes). When I attempt to simulate its movement in fluid (without any obstacle) I get this error: map_position_to_lattice: position not inside local plaquette.

The simulation runs for a very few steps and then stops due to the mentioned error. When I visualize the object in paraview, everything seems to be right from triangulation point of view. I know there is a problem with my new mesh (maybe parameters such as Ks,Kb must be modified, I'm not sure) because when I use the mesh provided with Espresso package (it has 400 nodes), everything goes fine. I'm using the .tcl file provided with Espresso for simulation of object in fluid.

I've attached mesh files. I'd appreciate your kind help to resolve this error.

Cheers,