Transport dissipative particle dynamics model for mesoscopic advection- diffusion-reaction problems
Journal Article
·
· Journal of Chemical Physics, 143(1):014101
We present a transport dissipative particle dynamics (tDPD) model for simulating mesoscopic problems involving advection-diffusion-reaction (ADR) processes, along with a methodology for implementation of the correct Dirichlet and Neumann boundary conditions in tDPD simulations. tDPD is an extension of the classic DPD framework with extra variables for describing the evolution of concentration fields. The transport of concentration is modeled by a Fickian flux and a random flux between particles, and an analytical formula is proposed to relate the mesoscopic concentration friction to the effective diffusion coefficient. To validate the present tDPD model and the boundary conditions, we perform three tDPD simulations of one-dimensional diffusion with different boundary conditions, and the results show excellent agreement with the theoretical solutions. We also performed two-dimensional simulations of ADR systems and the tDPD simulations agree well with the results obtained by the spectral element method. Finally, we present an application of the tDPD model to the dynamic process of blood coagulation involving 25 reacting species in order to demonstrate the potential of tDPD in simulating biological dynamics at the mesoscale. We find that the tDPD solution of this comprehensive 25-species coagulation model is only twice as computationally expensive as the DPD simulation of the hydrodynamics only, which is a significant advantage over available continuum solvers.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- DOE Office of Science; USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1221497
- Report Number(s):
- PNNL-SA-108851; KJ0401000; KJ0401000
- Journal Information:
- Journal of Chemical Physics, 143(1):014101, Journal Name: Journal of Chemical Physics, 143(1):014101
- Country of Publication:
- United States
- Language:
- English
Similar Records
cDPD: A new dissipative particle dynamics method for modeling electrokinetic phenomena at the mesoscale
A modified many-body dissipative particle dynamics model for mesoscopic fluid simulation: methodology, calibration, and application for hydrocarbon and water
Dissipative particle dynamics of diffusion-NMR requires high Schmidt-numbers
Journal Article
·
Thu Oct 13 20:00:00 EDT 2016
· Journal of Chemical Physics
·
OSTI ID:1565589
A modified many-body dissipative particle dynamics model for mesoscopic fluid simulation: methodology, calibration, and application for hydrocarbon and water
Journal Article
·
Wed Feb 03 19:00:00 EST 2021
· Molecular Simulation
·
OSTI ID:1768247
Dissipative particle dynamics of diffusion-NMR requires high Schmidt-numbers
Journal Article
·
Tue Jun 28 00:00:00 EDT 2016
· Journal of Chemical Physics
·
OSTI ID:22676026