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Re: [ESPResSo-users] Printing out velocity


From: Peter Kosovan
Subject: Re: [ESPResSo-users] Printing out velocity
Date: Thu, 11 Aug 2011 12:25:46 +0200 (CEST)
User-agent: Alpine 2.00 (LNX 1167 2008-08-23)

Hi Aparna

to print the particle velocities, use the part command. E.g. if you want to 
print velocity and angular velocity of particle 3, call

part 3 print v omega

Part command is abolutely essential and can do a lot of things, so I would 
recommend to read section 4 of the manual in detail.

You have to print v before you start the integration. Velocities are not 
initialized automatically but if you are using a thermostat, random forces and 
friction bring them to the correct distribution after a few integration steps.

peter

--
Peter KoŇ°ovan
Institute of Computational Physics
University of Stuttgart
Pfaffenwaldring 27
70569 Stuttgart
Germany

On Thu, 11 Aug 2011, Sreekumari  Aparna wrote:

Hello all,

To do the dipole simulation, I have initialised coordinates and dipolemoment 
orientation of dipoles and set the temperature and thermostat. I did not 
initialise velocities by hand. But from the simulation results i found that its 
taking the correct velocities, I would like to print the initial linear and 
angular velocities. I have searched in User's guide, i don't know whether its 
due to my mistake, i could not find it. Can anybody help?

Regards,
Aparna

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