Parametric study of fluid–solid interaction for single-particle dissipative particle dynamics model

Wang, Yi; Ouyang, Jie; Li, Yanggui

doi:10.1007/s10404-018-2099-4

Cited by 8 publications

(3 citation statements)

References 46 publications

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“…The association between the cut-off radius and the particle radius was also investigated. Similarly, Wang et al [31] numerically studied the fluid-structure interaction parameters of a single particle to determine the relationship between the cut-off radius and the conservative force coefficients. The simulation effectively addressed the hydrodynamic behavior of particles in low-R e flow regimes.…”

Section: Introductionmentioning

confidence: 99%

“…They compared the resistance coefficient of the frozen sphere to classical theory, and achieved consistent results in the simulation of sedimentation. In the above-mentioned study on the particle migration in microchannel, the fluid-particle interaction highly depended on the conservative force coefficient a ij (Wang et al [31]). If the same conservative force coefficient was used for different sized particles, the fluid would penetrate into the particle during the simulation (Wang et al [31]), which violates the physical principle.…”

Section: Introductionmentioning

confidence: 99%

“…In the above-mentioned study on the particle migration in microchannel, the fluid-particle interaction highly depended on the conservative force coefficient a ij (Wang et al [31]). If the same conservative force coefficient was used for different sized particles, the fluid would penetrate into the particle during the simulation (Wang et al [31]), which violates the physical principle. Therefore, it is necessary to find the appropriate conservative force coefficient a ij for different sized particles.…”

Section: Introductionmentioning

confidence: 99%

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An improved dissipative particle dynamics method for the liquid-particle two-phase flow in microchannels

Dong,

Wu,

Fan

et al. 2023

J. Micromech. Microeng.

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Liquid-particle two-phase flow in microchannel widely exists in the fields of biomedical and environmental monitoring, such as the lab-chip device for disease diagnosis. The standard dissipative particle dynamics (DPD) method has been previously employed to study the liquid-particle two-phase flow in microchannel, but it can not accurately simulate the real process because of the unsuitable DPD parameters. In the present study, an improved DPD method was developed by changing the system energy and fitting the characteristic curve between the random force coefficient and the Schmidt number. In addition, a new logarithmic relationship between the conservative force coefficient and the particle size was found. The result demonstrated that the improved DPD method enabled more accurate simulation on the liquid-particle two-phase flow in microchannels than the standard DPD method. For instance, in the simulation of particle sedimentation, the relative deviation between the value obtained by the improved DPD method and the theorical value was less than 6% while the relative deviation was more than 20% for the standard DPD method. The simulated result of the particle migration in microchannel was in good agreement with the result obtained by Matas et al., and the relative deviation was less than 1.5%. Therefore, the improved DPD method would have great potentials in the study on the liquid-particle two-phase flow in microchannels.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%