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Mesoscopic simulation of a thinning liquid bridge using the dissipative particle dynamics method
Chao-jie Mo1, Li-jun Yang1, Fei Zhao1
1School of Astronautics, Beihang University, Beijing 100191, P.R. China.
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|September 19, 2015
Summary
Dissipative particle dynamics simulations reveal how liquid bridges thin and break. This method accurately models inertial and thermal fluctuation effects, offering insights into fluid dynamics.
Area of Science:
- Fluid Dynamics
- Computational Physics
- Soft Matter Science
Background:
- Liquid bridges are crucial in various industrial processes.
- Understanding their thinning and breakup dynamics is essential for process optimization.
- Existing models face challenges in capturing the transition between different thinning regimes.
Purpose of the Study:
- To investigate liquid bridge thinning and breakup using the dissipative particle dynamics (DPD) method.
- To assess the capability of DPD in simulating different thinning regimes.
- To explore the crossover between hydrodynamics-dominated and thermal fluctuation-dominated thinning.
Main Methods:
- Utilized the dissipative particle dynamics (DPD) simulation technique.
- Varied simulation parameters to reproduce distinct thinning behaviors.
- Analyzed the dynamics of liquid bridge thinning and breakup.
Main Results:
- DPD successfully reproduced inertial-force-dominated thinning.
- DPD accurately simulated thermal-fluctuation-dominated thinning.
- A potential viscous thinning regime was observed, though further investigation is needed due to DPD fluid shear viscosity complexities.
Conclusions:
- The dissipative particle dynamics method is a suitable candidate for studying liquid bridge thinning.
- DPD can elucidate the crossover phenomena in liquid bridge dynamics.
- This research provides a computational framework for understanding complex fluid behaviors.
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