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[ESPResSo-users] problem with polymer module

From: 张爽
Subject: [ESPResSo-users] problem with polymer module
Date: Wed, 3 Jul 2019 14:45:09 -0500

Hi there,
I am trying to generate a polymer by using espresso polymer module(version 4.0.2). 
Here is my script:
 import sys
 import numpy as np
 import espressomd
 from espressomd.interactions import FeneBond
 from espressomd import polymer
 num_poly = 1
 num_mono = 5
 fene = FeneBond(k=30, d_r_max=2)
 polymer.create_polymer(start_pos=[1, 1, 1], N_P=num_poly,bond_length=0.9, bond=fene,MPC=num_mono)

But it always raises a excetion that the bonded interaction passed as 'bond' keyword argument has not yet been added to the list of active bonds in Espresso.

Does anyone know how to fix this? Thank you very much.


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