|Subject:||Re: [ESPResSo-users] (no subject)|
|Date:||Fri, 30 Nov 2012 20:12:06 +0330|
Thanks! I hope you are also fine.
I hope your success in your project!
NargesOn Fri, Nov 30, 2012 at 2:15 PM, Farnoosh Farahpoor <address@hidden> wrote:
Dear NargesHow are you?Thanks for your kind reply. In fact in my new project I have an electric field which is impossible to write it in a closed form. I obtain it from a FEM solution.In our last study I had a field with a closed form and exactly as you said I changed the file "constraint.h".I think Stefan's solution is the best for me.Thank you again.Best regards,FarnoushOn Fri, Nov 30, 2012 at 1:56 PM, Narges Nikoofard <address@hidden> wrote:Dear Farnoosh,
I am not an expert in ESPResSo. But I have some time added an electric field varying in space to the ESPResSo. It you can write the force field in a closed form, it might be helpful. The changes should be made to the file "constraint.h". It would be very similar to the external magnetic field constraint, except that the particle position should also be in the inputs to the constraint function. Also, because a new constraint is defined, some minor changes are needed in the files "constraint.c" or "interaction_data.h".
If you think that this is useful, I can send you the changed files.
As some problems occured in my email, I hope that this email has not reached everyone twice!
NargesOn Thu, Nov 29, 2012 at 5:28 PM, Farnoosh Farahpoor <address@hidden> wrote:Dear allI want to apply a force field with a complicate functionality in position. The force field depends on the position of the particle and is obtained from a finite element calculation.Is there a way to apply such a force in integration process of ESPResSo? If not is there any idea about what is the best way to add it to the source files (in which file)?Best regards,Farnoush--
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Dear Stefan.I am interested in study the dynamical properties of colloids on corrugated substrates.In the simulation I need to apply a potential to mimic the corrugated surface.The potential is very simple (in my case) but then the force is position dependent:V(x) = Vo * Sin(2 Pi x/lambda)Vo => strengthlambda => Periodicity
Do you think that your implementation could do the trick to apply such potential and forces with ESPResSo?Thanks a lot,Salvador H-V
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