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Concurrent coupling of atomistic simulation and mesoscopic hydrodynamics for flows over soft multi-functional surfaces

Journal Article · · Soft Matter
DOI:https://doi.org/10.1039/c8sm02170h· OSTI ID:1710202
 [1];  [2];  [2];  [3];  [4]
  1. Beijing Normal University
  2. Brown University
  3. Chinese Academy of Sciences
  4. BROWN UNIVERSITY

We develop an e?cient parallel multiscale method that bridges the atomistic and mesoscale regimes, from nanometers to microns and beyond, via concurrent coupling of atomistic simulation and mesoscopic dynamics. In particular, we combine an all-atom molecular dynamics (MD) description for specific atomistic details in the vicinity of the functional surface with a dissipative particle dynamics (DPD) approach that captures mesoscopic hydrodynamics in the domain away from the functional surface. In order to achieve a seamless transition in dynamic properties we endow the MD simulation with a DPD thermostat, which is validated against experimental results by modeling water at di?erent temperatures. We then validate the MD-DPD coupling method for transient Couette and Poiseuille flows, demonstrating that the concurrent MD-DPD coupling can resolve accurately the continuumbased analytical solutions. Subsequently, we simulate shear flows over grafted polydimethylsiloxane (PDMS) surfaces (polymer brushes) for various grafting densities, and investigate the slip flow as a function of the shear stress. We verify that a ‘‘universal’’ power law exists for the slip length, in agreement with published results. Having validated the MD-DPD coupling method, we simulate timedependent flows past an endothelial glycocalyx layer (EGL) in a microchannel. Coupled simulation results elucidate the dynamics of the EGL changing from an equilibrium state to a compressed state under shear by aligning the molecular structures along the shear direction. MD-DPD simulation results agree well with results of a single MD simulation, but with the former more than two orders of magnitude faster than the latter for system sizes above one micron.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
1710202
Report Number(s):
PNNL-SA-151287
Journal Information:
Soft Matter, Journal Name: Soft Matter Journal Issue: 8 Vol. 15
Country of Publication:
United States
Language:
English

References (59)

Counterion Condensation and Fluctuation-Induced Attraction text January 2002
A calculation of the viscous force exerted by a flowing fluid on a dense swarm of particles journal December 1949
Fluctuating hydrodynamics in periodic domains and heterogeneous adjacent multidomains: Thermal equilibrium journal November 2015
Large-scale molecular dynamics simulation of flow under complex structure of endothelial glycocalyx journal September 2018
PDMS grafting of mesoporous γ-alumina membranes for nanofiltration of organic solvents journal November 2014
A Role for the Endothelial Glycocalyx in Regulating Microvascular Permeability in Diabetes Mellitus journal August 2007
Stretching of Grafted Polymer Layers journal September 1990
Construction of dissipative particle dynamics models for complex fluids via the Mori–Zwanzig formulation journal January 2014
Mechanotransduction and flow across the endothelial glycocalyx journal June 2003
Nanoparticle Delivery of Cancer Drugs journal February 2012
Effect of grafting on microstructure, composition and surface and transport properties of ceramic membranes for osmotic evaporation journal August 2011
A dissipative particle dynamics method for arbitrarily complex geometries journal February 2018
All-Atom Empirical Potential for Molecular Modeling and Dynamics Studies of Proteins journal April 1998
Energy-conserving dissipative particle dynamics with temperature-dependent properties journal May 2014
A continuum and molecular dynamics hybrid method for micro- and nano-fluid flow journal January 1999
Formation of more stable hydrophilic surfaces of PDMS by plasma and chemical treatments journal April 2006
Tethered chains in poor solvent conditions: An experimental study involving Langmuir diblock copolymer monolayers journal February 1999
Surface graft polymerization of SU-8 for bio-MEMS applications journal June 2007
The endothelial glycocalyx: a review of the vascular barrier journal April 2014
Perspective: Dissipative particle dynamics journal April 2017
Resistance to blood flow in microvessels in vivo. journal November 1994
The endothelial surface layer journal April 2000
Multi-resolution flow simulations by smoothed particle hydrodynamics via domain decomposition journal September 2015
Shear-induced permeability changes in a polymer grafted silica membrane journal November 2000
Atomistic Simulation of Poly(dimethylsiloxane):  Force Field Development, Structure, and Thermodynamic Properties of Polymer Melt and Solubility of n -Alkanes, n -Perfluoroalkanes, and Noble and Light Gases journal March 2007
Adaptive resolution simulations coupling atomistic water to dissipative particle dynamics journal September 2017
Solvent permeation behavior of PDMS grafted γ-alumina membranes journal December 2015
Blood Flow and Cell-Free Layer in Microvessels: Blood Flow and Cell-Free Layer in Microvessels journal November 2010
The shear viscosities of common water models by non-equilibrium molecular dynamics simulations journal June 2010
Fast Parallel Algorithms for Short-Range Molecular Dynamics journal March 1995
Active learning of constitutive relation from mesoscopic dynamics for macroscopic modeling of non-Newtonian flows journal June 2018
Structure and Response to Flow of the Glycocalyx Layer journal January 2014
Liposomal drug delivery systems: From concept to clinical applications journal January 2013
Simulation and modelling of slip flow over surfaces grafted with polymer brushes and glycocalyx fibres journal September 2012
VMD: Visual molecular dynamics journal February 1996
Coupling lattice Boltzmann and molecular dynamics models for dense fluids journal April 2007
Drug delivery and nanoparticles: Applications and hazards journal June 2008
50th Anniversary Perspective : Polymer Brushes: Novel Surfaces for Future Materials journal May 2017
Hybrid atomistic–continuum method for the simulation of dense fluid flows journal May 2005
Perspective: Dissipative Particle Dynamics text January 2016
Nonlinear Response of Grafted Semiflexible Polymers in Shear Flow journal May 2009
Transport properties controlled by a thermostat: An extended dissipative particle dynamics thermostat journal January 2008
The Structure and Function of the Endothelial Glycocalyx Layer journal August 2007
Predicting the morphology of sickle red blood cells using coarse-grained models of intracellular aligned hemoglobin polymers journal January 2012
Counterion condensation and fluctuation-induced attraction journal October 2002
The endothelial glycocalyx: composition, functions, and visualization journal January 2007
Brushes of semiflexible polymers in equilibrium and under flow in a super-hydrophobic regime journal January 2015
An Optimization-based Atomistic-to-Continuum Coupling Method journal January 2014
Dissipative particle dynamics: Bridging the gap between atomistic and mesoscopic simulation journal September 1997
Oligosaccharide model of the vascular endothelial glycocalyx in physiological flow journal January 2018
Triple-decker: Interfacing atomistic–mesoscopic–continuum flow regimes journal March 2009
Thermal conductivity, shear viscosity and specific heat of rigid water models journal July 2012
Static and dynamic properties of dissipative particle dynamics journal August 1997
Development of a PDMS-grafted alumina membrane and its evaluation as solvent resistant nanofiltration membrane journal August 2014
Transport dissipative particle dynamics model for mesoscopic advection-diffusion-reaction problems journal July 2015
Theory of the grafted polymer brush journal August 1988
A dissipative particle dynamics method for arbitrarily complex geometries text January 2016
Multiscale Universal Interface: A concurrent framework for coupling heterogeneous solvers journal September 2015
The shear viscosity of rigid water models journal March 2010

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