.. _config_ref namd membrane:

``membrane``
------------

  * ``langevinpiston``: True
  * ``langevinpistontarget``: $pressure
  * ``langevinpistonperiod``: 200
  * ``langevinpistondecay``: 100
  * ``langevinpistontemp``: $temperature
  * ``usegrouppressure``: True
  * ``useflexiblecell``: True
  * ``useconstantratio``: True


NAMD parameters for membrane simulations (NPAT ensemble)

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