Статья

Molecular dynamics with coupling to an external bath

Herman J. C. BerendsenLaboratory of Physical Chemistry, The University of Groningen, Nijenborgh 16, 9747 Ag Groningen, The NetherlandsJohan P. M. PostmaLaboratory of Physical Chemistry, The University of Groningen, Nijenborgh 16, 9747 Ag Groningen, The NetherlandsWilfred F. van GunsterenLaboratory of Physical Chemistry, The University of Groningen, Nijenborgh 16, 9747 Ag Groningen, The NetherlandsA. DiNolaLaboratory of Physical Chemistry, The University of Groningen, Nijenborgh 16, 9747 Ag Groningen, The NetherlandsJ.R. HaakLaboratory of Physical Chemistry, The University of Groningen, Nijenborgh 16, 9747 Ag Groningen, The Netherlands

1984en

ABI

Аннотация

In molecular dynamics (MD) simulations the need often arises to maintain such parameters as temperature or pressure rather than energy and volume, or to impose gradients for studying transport properties in nonequilibrium MD. A method is described to realize coupling to an external bath with constant temperature or pressure with adjustable time constants for the coupling. The method is easily extendable to other variables and to gradients, and can be applied also to polyatomic molecules involving internal constraints. The influence of coupling time constants on dynamical variables is evaluated. A leap-frog algorithm is presented for the general case involving constraints with coupling to both a constant temperature and a constant pressure bath.

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Идентификаторы

DOI: 10.1063/1.448118

Цитирования и источники

Цитирований: 34Использованных источников: 0

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