267 citations · 621 across the 15 of their papers we have counts for
15 papers
Nonlinear Dielectric Decrement of Electrolyte Solutions: an Effective Medium Approach
Yasuya Nakayama
Hypothesis. The dielectric constant of an electrolyte solution, which determines electrostatic interactions between colloids and interfaces, depends nonlinearly on the salinity and…
Prediction of shear-thickening of particle suspensions in viscoelastic fluids by direct numerical simulation
Yuki Matsuoka, Yasuya Nakayama, Toshihisa Kajiwara
To elucidate the key factor for the quantitative prediction of the shear-thickening in suspensions in viscoelastic fluids, direct numerical simulations of many-particle suspensions…
Effects of viscoelasticity on shear-thickening in dilute suspensions in a viscoelastic fluid
Yuki Matsuoka, Yasuya Nakayama, Toshihisa Kajiwara
We investigate previously unclarified effects of fluid elasticity on shear-thickening in dilute suspensions in an Oldroyd-B viscoelastic fluid using a novel direct numerical simula…
Improving mixing characteristics with a pitched tip in kneading elements in twin-screw extrusion
Yasuya Nakayama, Hiroki Takemitsu, Toshihisa Kajiwara +3
In twin-screw extrusion, the geometry of a mixing element mainly determines the basic flow pattern, which eventually affects the mixing ability as well as the dispersive ability of…
Strain Mode of General Flow: Characterization and Implications for Flow Pattern Structures
Yasuya Nakayama, Tatsunori Masaki, Toshihisa Kajiwara
Understanding the mixing capability of mixing devices based on their geometric shape is an important issue both for predicting mixing processes and for designing new mixers. The fl…
Effects of pitched tips of novel kneading disks on melt mixing in twin-screw extrusion
Yasuya Nakayama, Nariyoshi Nishihira, Toshihisa Kajiwara +3
In mixing highly viscous materials, like polymers, foods, and rubbers, the geometric structure of the mixing device is a determining factor for the quality of the mixing process. I…