67 citations · 236 across the 13 of their papers we have counts for
13 papers
Diffusion with a broad class of stochastic diffusion coefficients
Go Uchida, Hitoshi Washizu, Hiromi Miyoshi
In many physical or biological systems, diffusion can be described by Brownian motions with stochastic diffusion coefficients (DCs). In the present study, we investigate properties…
Simulating the nematic-isotropic phase transition of liquid crystal model via generalized replica-exchange method
Kengo Takemoto, Yoshiki Ishii, Hitoshi Washizu +2
The nematic-isotropic (NI) phase transition of 4-cyano-4'-pentylbiphenyl (5CB) was simulated using the generalized replica-exchange method (gREM) based on molecular dynamics simula…
Numerical simulation method for Brownian particles dispersed in incompressible fluids
Hiroaki Yoshida, Tomoyuki Kinjo, Hitoshi Washizu
We present a numerical scheme for simulating the dynamics of Brownian particles suspended in a fluid. The motion of the particles is tracked by the Langevin equation, whereas the h…
Molecular dynamics analysis of adsorption process of anti-copper-corrosion additives to the copper surface
Kohei Nishikawa, Hirotoshi Akiyama, Kazuhiro Yagishita +1
As a model system of the adsorption process of anti-corrosion additives on a metal surface, molecular dynamics simulations of benzotriazole (BTA) molecules with copper slabs were c…
Friction of the micron-scale silica under various behaviors of the shape and the orientation of the coarse-grained particle in adaptive smoothed particle hydrodynamics
Le Van Sang, Natsuko Sugimura, Hitoshi Washizu
The paper investigates dry sliding friction of the coarse-grained micronscale α-SiO2 oxide. Adaptive smoothed particle approach is used to consider various shapes and orientations…
Smoothed particle hydrodynamics study of friction of the coarse-grained -Al2O3/-Al2O3 and -Fe2O3/-Fe2O3 contacts in behavior of the spring interfacial potential
Le Van Sang, Akihiko Yano, Ai Isohashi +2
The paper uses the spring potential to present interaction between the coarse-grained interfacial particles of the -Al2O3/-Al2O3 and -Fe2O3/-Fe2O3 contacts in the slidi…
Understanding the effect of the base oil on the physical adsorption process of organic additives using molecular dynamics
Masakazu Konishi, Hitoshi Washizu
Organic friction modifiers (OFMs) are widely added to oil to reduce the boundary friction in many kinds of lubricants such as vehicle engine oils. At the contact area in machine el…
Friction and friction heat of micronscale iron
Le Van Sang, Akihiko Yano, Shuji Fujii +2
The paper investigates friction and friction heat of the micronscale iron under influences of velocity of the slider and temperature of the substrate by using smoothed particle hyd…
Coarse-grained model for spring friction study of micron-scale iron by smoothed particle hydrodynamics
Le Van Sang, Akihiko Yano, Shuji Fujii +2
The paper constructs a coarse-grained model to investigate dry sliding friction of the body-centered-cubic Fe micron-scale system by smoothed particle hydrodynamics simulations and…
Molecular Origin of Limiting Shear Stress of Elastohydrodynamic Lubrication Oil Film Studied by Molecular Dynamics
Hitoshi Washizu, Toshihide Ohmori, Atsushi Suzuki
All-atom molecular dynamics simulations of an elastohydrodynamic lubrication oil film are performed to study the effect of pressure. Fluid molecules of n-hexane are confined betwee…
Analysis of electro-osmotic flow in a microchannel with undulated surfaces
Hiroaki Yoshida, Tomoyuki Kinjo, Hitoshi Washizu
The electro-osmotic flow through a channel between two undulated surfaces induced by an external electric field is investigated. The gap of the channel is very small and comparable…
Generic transport coefficients of a confined electrolyte solution
Hiroaki Yoshida, Hideyuki Mizuno, Tomoyuki Kinjo +2
Physical parameters characterising electrokinetic transport in a confined electrolyte solution are reconstructed from the generic transport coefficients obtained within the classic…
Molecular dynamics simulation of electrokinetic flow of an aqueous electrolyte solution in nanochannels
Hiroaki Yoshida, Hideyuki Mizuno, Tomoyuki Kinjo +2
Electrokinetic flows of an aqueous NaCl solution in nanochannels with negatively charged surfaces are studied using molecular dynamics (MD) simulations. The four transport coeffici…