Publications by authors named "Kenta Shirode"
A unique setup for a granular vibration pumping system was developed to ease the installation into a wide variety of granular handling processes and provide flexible options for granular physics research. Although the granular vibration pumping system can notably lift granular materials with an oscillating pipe, the climbing mechanism and related granular physics are yet to be clarified thoroughly. The new setup employs an eccentric cam mechanism as the excitation source, a linear system with dust tolerance, and a recording system, making it simple, compact, and adaptable for extending experiments.
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- - The study explored how poly(methyl acrylate) (PMA) additives behave when adsorbing to surfaces and their effects during fluid lubrication in narrow gaps, using techniques like neutron reflectometry and viscometry.
- - Findings indicated that while the initial adsorption layer of the polymer was about 3 nm thick at rest, it significantly grew to over 100 nm when the oil flowed through larger microchannels over time.
- - The effective viscosity of the fluid increased at low shear rates, and the results suggested that the formation of inhomogeneous structures from PMA aggregates contributed to this resistance, particularly affecting flow behavior at low speeds.