51 citations · 143 across the 8 of their papers we have counts for
8 papers
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…
Quantifying hierarchical mixture quality in polymer composite materials: structure and inhomogeneity in multiple scales
Yasuya Nakayama, Toshihisa Kajiwara
Mixture quality plays a crucial role in the physical properties of multi-component immiscible polymer mixtures including nanocomposites and polymer blends. Such complex mixtures ar…
Dynamic shear responses of polymer-polymer interfaces
Yasuya Nakayama, Kiyoyasu Kataoka, Toshihisa Kajiwara
In multi-component soft matter, interface properties often play a key role in determining the properties of the overall system. The identification of the internal dynamic structure…
Melt-Mixing by Novel Pitched-Tip Kneading Disks in a Co-Rotating Twin-Screw Extruder
Yasuya Nakayama, Eiji Takeda, Takashi Shigeishi +2
Melt-mixing in twin-screw extruders is a key process in the development of polymer composites. Quantifying the mixing performance of kneading elements based on their internal physi…