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Updated: May 14, 2026

Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
Published on: February 22, 2018
No-slip boundary conditions and forced flow in multiparticle collision dynamics
Dan S Bolintineanu1, Jeremy B Lechman, Steven J Plimpton
1Sandia National Laboratories, Albuquerque, New Mexico 87185, USA. dsbolin@sandia.gov
Multiparticle collision dynamics (MPCD) simulations require careful parameterization for accurate fluid-solid boundary conditions, especially in forced flow scenarios. This study clarifies virtual particle methods and boundary rules for reliable mesoscale fluid modeling.
Area of Science:
- Computational physics
- Mesoscale fluid dynamics
- Particle-based simulations
Background:
- Multiparticle collision dynamics (MPCD) is a mesoscale fluid simulation technique.
- Existing literature shows confusion regarding no-slip conditions and thermostatting in forced flow MPCD simulations.
- These issues are critical for accurate fluid-solid interactions.
Purpose of the Study:
- To clarify methodological details in MPCD simulations, focusing on stationary boundaries and forced flow.
- To analyze the parametrization of MPCD fluids and its impact on boundary conditions.
- To provide a rigorous framework for complex MPCD simulations.
Main Methods:
- Detailed analysis of MPCD fluid parametrization and its effect on fluid-solid boundaries.
- Testing various implementations of the virtual particle method.
- Evaluation of stochastic boundary reflection rules and thermostatting methods for forced flow.
Main Results:
- The virtual particle method is only necessary for specific parameter choices leading to collision-dominated viscosities.
- Complete elimination of slip at stationary boundaries is achievable.
- Stochastic boundary reflection rules are problematic for forced flow; a remedy is proposed.
Conclusions:
- Accurate enforcement of no-slip conditions and robust thermostatting are crucial for reliable MPCD simulations.
- The findings provide a rigorous foundation for applying MPCD to complex systems, including colloids.
- This work resolves key ambiguities in MPCD methodology for mesoscale fluid dynamics.
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