Open AccessThe study of fluid with free surface by many-body dissipative particle dynamics
Author(s) -
Nan Zhou,
Shuo Chen
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.084701
Subject(s) - dissipative particle dynamics , mesoscopic physics , surface tension , mechanics , dissipative system , contact angle , materials science , drop (telecommunication) , free surface , pressure drop , laplace pressure , classical mechanics , physics , thermodynamics , condensed matter physics , computer science , polymer , telecommunications , composite material
The dynamics of a drop on a mesoscopic scale is investigated by using the many-body dissipative particle dynamic (MDPD) method. The formation of liquid-vapor coexistence interface in the MDPD system is explored. The simulations of the pressure inside/outside the drop and the surface tension are carried out, and it is verified that Laplace’s law is satisfied in our simulation. Different contact angles are obtained by changing conservative interaction parameters between particles. The relationship between MDPD paremeters and contact angles is discussed. Based on the results, the flow behaviors of a drop moving in grooved microcannels are simulated. The results in this paper are useful in studying the fluid with free surfaces flow behavior on rough surface.