Zobrazeno 1 - 10
of 453
pro vyhledávání: '"Yuichi Murai"'
Publikováno v:
Wind Energy, Vol 27, Iss 5, Pp 483-499 (2024)
Abstract The use of a turbo‐sail airfoil to improve the power generation of a Darrieus wind turbine was examined. The turbo‐sail airfoil comprises a symmetric blade from which a high‐speed tangential jet is produced to suppress flow separation.
Externí odkaz:
https://doaj.org/article/e6c9ac6729f24c248ed4e18343ab7c62
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 90, Iss 933, Pp 24-00035-24-00035 (2024)
Air flow field around narrowly arrayed out-door units of air conditioners is investigated experimentally under real-world operation conditions. The air flow velocities at the intake panels and exhaust ports of individual units are measured using hot-
Externí odkaz:
https://doaj.org/article/255586bb7c16400c8fbf5b8e2c288e69
Publikováno v:
Journal of Fluid Science and Technology, Vol 19, Iss 2, Pp JFST0013-JFST0013 (2024)
For simulating the behavior of air bubbles injected into the turbulent boundary layer developed beneath the bottom of a ship, we propose a novel experimental system for a different driving force on flow from the bulk pressure gradient. In the propose
Externí odkaz:
https://doaj.org/article/1cc48fe99b234f9eb40a5e6c7dfddcc8
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 88, Iss 911, Pp 22-00115-22-00115 (2022)
We propose a method to evaluate time-dependent rheological properties, shear stress, effective viscosity and shear rate, of coagulating curd of the skimmed milk as an analog of cheese products. Ultrasonic spinning rheometry was adopted for the rheolo
Externí odkaz:
https://doaj.org/article/d00e1673702d4a759d9f3cfe290db290
Autor:
Yuichi MURAI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 88, Iss 907, Pp 22-pre01-22-pre01 (2022)
Externí odkaz:
https://doaj.org/article/17dea7fae348493496a5630c544e764e
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 88, Iss 907, Pp 21-00297-21-00297 (2022)
Drag reduction by bubble injection in turbulent boundary layers was investigated using a 36-m-long flat-bottom model ship. The model ship was towed at 8.0 m/s, resulting in a downstream-distance-based Reynolds number as high as 2.9 × 108. The total
Externí odkaz:
https://doaj.org/article/b916d85093d744558cd3c63742927082
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 86, Iss 890, Pp 20-00242-20-00242 (2020)
This paper evaluated measurement accuracy and precision of ultrasonic spinning rheometry (USR), which can evaluate rheological properties through equation of motion and velocity information captured by ultrasonic velocity profiler (UVP), in cases tha
Externí odkaz:
https://doaj.org/article/5db129a3b3124931bd03bdf262dc8925
Publikováno v:
Journal of Fluid Science and Technology, Vol 15, Iss 3, Pp JFST0020-JFST0020 (2020)
Air lubrication systems have gained considerable popularity as a promising drag reduction technology in recent years. However, numerical simulations of intermediate-sized bubbles are quite challenging because of the numerical diffusion of the convent
Externí odkaz:
https://doaj.org/article/9948641c6342487d85a8ca7d856d2d43
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 86, Iss 888, Pp 20-00184-20-00184 (2020)
Aerodynamic drag on several types of road cones was measured by wind tunnel experiments purposing improvement of anti-fall-down functions against lateral wind blowing. By opening holes on the side surface of cones, drag coefficient decreased so that
Externí odkaz:
https://doaj.org/article/0b602ac5e2a24789a211850828ac6b1a
Autor:
Shinnosuke OBI, Koji FUKAGATA, Masaharu KAMEDA, Chisachi KATO, Yohei MORINISHI, Yuichi MURAI, Satoshi WATANABE, Masao WATANABE
Publikováno v:
Journal of Fluid Science and Technology, Vol 15, Iss 2, Pp JFST0007-JFST0007 (2020)
Externí odkaz:
https://doaj.org/article/fe85c4fcde364617bd03c3ca341f4ae7