A radial distribution function-based open boundary force model for multi-centered molecules

Philipp Neumann, Wolfgang Eckhardt, Hans-Joachim Bungartz

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We derive an expression for radial distribution function (RDF)-based open boundary forcing for molecules with multiple interaction sites. Due to the high-dimensionality of the molecule configuration space and missing rotational invariance, a computationally cheap, 1D approximation of the arising integral expressions as in the single-centered case is not possible anymore. We propose a simple, yet accurate model invoking standard molecule- and site-based RDFs to approximate the respective integral equation. The new open boundary force model is validated for ethane in different scenarios and shows very good agreement with data from periodic simulations. © World Scientific Publishing Company.
Original languageEnglish (US)
Pages (from-to)1450008
JournalInternational Journal of Modern Physics C
Volume25
Issue number06
DOIs
StatePublished - Apr 23 2014
Externally publishedYes

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