Can anyone tell how to create two boxes connecting with a cylinder and make the whole system confined in Lammps ?
Deepra Bhattacharya
You can use the "region" command. E.g. for a geometry of unit dimensions arranged along the x-axis, you can write something like this:
region 1 block 0 1 0 1 0 1
region 2 cylinder x 0 0 1 1 2
region 3 block 2 3 0 1 0 1
To know where the numbers came from, you can refer to the LAMMPS user manual (link below).
Remember that before you can use the region command, you might need to specify a number of other parameters, such as units, atom types, and the boundary style of your global simulation box.
Hope that helps.
http://lammps.sandia.gov/doc/region.html
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