Simulation of Polymer Chain Driven by DPD Solvent Particles in Nanoscale Flows

2010 ◽  
Author(s):  
Masoud Darbandi ◽  
Ramin Zakeri ◽  
Gerry E. Schneider
Keyword(s):  
Fluid Flow ◽  
Polymer Chain ◽  
Poiseuille Flow ◽  
Electroosmotic Flow ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
Body Forces ◽  
Flow Motion ◽  
Nanoscale Fluid Flow ◽  
2D And 3D

In this study, we simulate the motion and reformation of polymer chain in the nanoscale fluid flow motion of the DPD (Dissipative Particle Dynamics) solvent. The behavior of polymer chain through DPD solvent is studied for 2D and 3D considerations. We implement two body forces of Poiseuille flow and electroosmotic flow to the DPD fluid particles. In case of the electroosmotic flow force, we show that the movement of polymer chain via the electroosmotic phenomenon provides less dispersion than that of the Poiseuille flow for the same polymer chain movement.

scholarly journals Investigation of Magneto Hydro-Dynamics Effects on a Polymer Chain Transfer in Micro-Channel Using Dissipative Particle Dynamics Method

Symmetry ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 397 ◽  
Author(s):  
Ramin Zakeri ◽  
Moslem Sabouri ◽  
Akbar Maleki ◽  
Zahra Abdelmalek
Keyword(s):  
Polymer Chain ◽  
Dissipative Particle Dynamics ◽  
Mhd Flow ◽  
Particle Dynamics ◽  
Dynamics Simulation ◽  
Radius Of Gyration ◽  
Micro Channel ◽  
Effective Parameters ◽  
The Difference ◽  
Bond Constant

In this paper, the effect of Magneto Hydro-Dynamics (MHD) on a polymer chain in the micro channel is studied by employing the Dissipative Particle Dynamics simulation (DPD) method. First, in a simple symmetric micro-channel, the results are evaluated and validated for different values of Hartmann (Ha) Number. The difference between the simulation and analytical solution is below 10%. Then, two types of polymer chain including short and long polymer chain are examined in the channel and the effective parameters such as Ha number, the harmony bond coefficient or spring constant (K), and the length of the polymer chain (N) are studied in the MHD flow. It is shown that by increasing harmony bond constant to 10 times with Ha = 20, the reduction of about 80% in radius of gyration squared, and half in polymer length compared to Ha = 1 would occur for both test cases. For short and long length of polymer, proper transfer of a polymer chain through MHD particles flow is observed with less perturbations (80%) and faster polymer transfer in the symmetric micro-channel.

Controlling electroosmotic flow by polymer coating: a dissipative particle dynamics study

2010 ◽  
Vol 10 (5) ◽  
pp. 977-990 ◽  
Author(s):  
Qianqian Cao ◽  
Chuncheng Zuo ◽  
Lujuan Li ◽  
Yang Yang ◽  
Nan Li
Keyword(s):  
Electroosmotic Flow ◽  
Polymer Coating ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics

Simulation of Fluid Flow in a Microchannel at Low Reynolds Number Using Dissipative Particle Dynamics

2018 ◽  
Author(s):  
Waqas Waheed ◽  
Anas Alazzam ◽  
Ashraf N. Al Khateeb ◽  
Eiyad Abu Nada
Keyword(s):  
Reynolds Number ◽  
Fluid Flow ◽  
Velocity Profile ◽  
Drag Coefficient ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
Published Data ◽  
Two Dimensional ◽  
Close Match ◽  
Good Agreement

In this paper, a two-dimensional Dissipative Particle Dynamics (DPD) technique to simulate the poiseuille flow in a microchannel is developed using an in-house code. The calculated Reynolds number is reduced via adjusting the DPD parameters. The obtained velocity profile is compared with the analytical results and a good agreement is found. The drag force and the drag coefficient on a stationary cylinder exerted by the fluid particles are obtained using the developed DPD code. The calculated drag coefficient exhibits a close match with already published data in the literature.

Inertio-capillary cross-streamline drift of droplets in Poiseuille flow using dissipative particle dynamics simulations

Soft Matter ◽  
2018 ◽  
Vol 14 (12) ◽  
pp. 2267-2280 ◽  
Author(s):  
Ryan L. Marson ◽  
Yuanding Huang ◽  
Ming Huang ◽  
Taotao Fu ◽  
Ronald G. Larson
Keyword(s):  
Poiseuille Flow ◽  
Dissipative Particle Dynamics ◽  
Particle Dynamics ◽  
Complex Interplay ◽  
Dimensionless Groups ◽  
Dynamics Simulations

Using simulations we find that deformable droplets under Poiseuille flow migrate to fixed positions within a microchannel that depend on a complex interplay between multiple controlling dimensionless groups.

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