Tamano S.,Nagoya Institute of Technology |
Itoh M.,Aichi University of Technology |
Yang W.,Aisan Industry Co. |
Yokota K.,Nagoya Institute of Technology
Nihon Reoroji Gakkaishi | Year: 2010
In order to investigate the secondary flow patterns of viscoelastic swirling flows in a cylindrical casing with a partially rotating disc, the numerical simulation of the confined swirling flow was performed at low Reynolds numbers, in which the Giesekus model was used as a constitutive equation. The Giesekus model parameters were obtained for polyacrylamide solutions whose concentrations were from 0.025 wt% to 0.2 wt%. The aspect ratio of the distance H between the casing end wall and the rotating disk to the container radius Rc was fixed to H/Rc = 2.0. The ratio of rotating disc radius Rd to Rc, σ = Rd/Rc, was 0.4, 0.6 and 1.0. Five kinds of secondary flow patterns, which were classified using the Reynolds and elastic numbers, were observed, which was almost independent of the σ. © 2010 The Society of Rheology, Japan. Source
Aoki Science Institute Co., Aisan Industry Co., Kotobuki Kinzoku Kogyo Co. and Ryobi Ltd. | Date: 2012-02-12
An oil type release agent is provided, containing 70 to 98 parts by weight of solvents having dynamic viscosity of 2 to 10 mm
Toyota Jidosha Kabushiki Kaisha, Aisan Industry Co. and Nippon Soken Inc. | Date: 2010-09-13
A fuel feed system which causes liquid fuel to evaporate so as to feed gaseous fuel, provided with an evaporator which includes a heater which heats the liquid fuel to vaporize it and an electric heater which adjusts the temperature of the heater. The heater has a heat conduction surface which supplies heat to the liquid fuel. A difference between the temperature of the heat conduction surface of the heater and the boiling point of the fuel at the evaporator is used as the basis to change the temperature of the heater and adjust the heat flux at the heat conduction surface.
Aisan Industry Co. and Toyota Jidosha Kabushiki Kaisha | Date: 2010-01-13
Inside an engine compartment of a vehicle, an ammonia concentration sensor is arranged above a liquid ammonia injector which is attached to an internal combustion engine body and to the rear in a direction of progression of the vehicle. An ammonia concentration which is detected by the ammonia concentration sensor is used as the basis to judge if ammonia is leaked.
Murakami Y.,Japan National Institute of Advanced Industrial Science and Technology |
Miwa K.,Aichi Science and Technology Foundation |
Kito M.,Aisan Industry Co. |
Honda T.,Aisan Industry Co. |
And 2 more authors.
Materials Transactions | Year: 2016
In semi-solid forming processes for metals, it is important to make slurries with fine, round solid particles. In this study, we investigated the effects of mechanical vibration on the size and shape of solid particles. The slurry was prepared by pouring molten AC4CH aluminum alloy into a vibrating stainress container, and the vibration of the container was controlled. The solid particles in the slurry became finer and rounder with increasing acceleration amplitude at the same frequency, or with decreasing frequency at the same acceleration amplitude. However, at the same velocity amplitude and different frequency and acceleration amplitude, the solid particles formed a dendritic structure at high or low frequencies. The solid particles were the finest and roundest at a frequency of 50 Hz. The calculation results for the particle diameter and the particle roundness also showed that the solid particles became finer and rounder with increasing velocity amplitude. Additionally, the shapes of solid particles were affected by the frequency and displacement amplitude. Mechanical vibration with a frequency and displacement amplitude above certain threshold values produced fine, round solid particles. Slurry containing sufficiently fine, round particles was obtained by applying mechanical vibration at 50Hz with an acceleration amplitude higher than 49.0m/s2. © 2016 The Japan Institute of Metals and Materials. Source