Výsledky vyhledávání - "Hisato Minagawa"

Akademický článek

Nanobubbles in vase water inhibit transpiration and prolong the vase life of cut chrysanthemum flowers

Autor: Rie Nakazawa, Akito Tanaka, Naoki Hata, Hisato Minagawa, Emiko Harada

Publikováno v: Plant-Environment Interactions, Vol 4, Iss 6, Pp 309-316 (2023)

Abstract Nanobubble (NB) water has been shown to promote the growth of several types of plants and animals, but the mechanism underlying this promoting effect remains unclear. The present study evaluated the mechanism by which NBs maintain the freshn

Externí odkaz: https://doaj.org/article/f485a6312f28401880de8f543291442a

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Akademický článek

A study on unsteady fluid-dynamic force characteristics of a pitching wing with leading edge protuberance

Autor: Kazuki DOI, Takahiro YASUDA, Aki NAKATA, Hisato MINAGAWA

Publikováno v: Nihon Kikai Gakkai ronbunshu, Vol 89, Iss 924, Pp 23-00095-23-00095 (2023)

We conducted a study on unsteady characteristics of fluid-dynamic force acting on a pitching NACA0012 wing with linear leading edge (Baseline) and with leading edge protuberance (Wave) in low Reynolds number region (Re =4.32×104) for the development

Externí odkaz: https://doaj.org/article/e3bafa6d7bf0481a92140abf97fe8ea2

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Akademický článek

A study on separation control mechanisms of tandemly arranged wing with linear leading edge and leading edge protuberance

Autor: Ayami UEKI, Takahiro YASUDA, Haruki YASUI, Kazuki DOI, Hisato MINAGAWA

Publikováno v: Nihon Kikai Gakkai ronbunshu, Vol 89, Iss 917, Pp 22-00061-22-00061 (2022)

A study on separation control mechanisms of tandemly arranged wing with linear leading edge (LLE) and leading edge protuberance (LEP) in low Reynolds number was conducted. In this study, to investigate the separation control mechanism, we carried out

Externí odkaz: https://doaj.org/article/b3402d2fc89c4d3198fa54de013ae8a9

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Akademický článek

Application of a Two-Phase Flow Model Based on Local Relative Velocity to Solid-Liquid Two-Phase Flows with Coarse Particles

Autor: Hisato MINAGAWA, Hideaki SHAKUTSUI, Akio TOMIYAMA

Publikováno v: Journal of Fluid Science and Technology, Vol 2, Iss 1, Pp 205-214 (2007)

The local relative velocity model proposed by Tomiyama, et al. was applied to the estimation of solid volume fraction in solid-liquid two-phase pipe flows for a wide range of diameter ratio of particle diameter to pipe diameter. The diameter ratio wa

Externí odkaz: https://doaj.org/article/f2ba6d4edcb84cbdaabacf54616e885f

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Akademický článek

Drag reduction of turbulent flow with micro bubbles in vertical pipes

Autor: Hisato MINAGAWA, Kazumasa SAKAI, Ryo KURIMOTO, Takahiro YASUDA

Publikováno v: Nihon Kikai Gakkai ronbunshu, Vol 80, Iss 817, Pp FE0259-FE0259 (2014)

Frictional pressure drop of turbulent upward flow with micro bubbles in a vertical pipe was investigated. To investigate relation between pipe diameter and the frictional pressure drop, three different pipes whose diameters are 5.9, 13 and 16 mm were

Externí odkaz: https://doaj.org/article/f1470df01e2e46c7922e104f0292d020

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