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Featured researches published by Kazuhiro Otsubo.


Eighth Asia-Pacific Conference on Wind Engineering | 2013

Numerical and Experimental Investigations on Unsteady Wind Pressure on a Gable Roof Body Under a Short-Rise-Time Gust

Takashi Takeuchi; Junji Maeda; Kazuhiro Otsubo

This paper reports on an investigation into the unsteady wind pressure measured on a gable roof body subjected to short-rise-time gusts in the wind tunnel compared with the results of a computational fluid dynamics (CFD) simulation using a large eddy simulation (LES) model, and the flow pattern around the body subjected to shortrise-time gusts. It was confirmed that the overshoot phenomena of wind pressure occurred on the gable roof body subjected to a short-rise-time gust by wind tunnel tests and CFD calculations. The peak value of wind pressure simulated by CFD matched well with that of the experimental result. It was found that a vortex was generated on the leeward roof face of the gable roof body under short-rise-time gusts, and the generation of this vortex caused the overshoot phenomenon of wind pressure on the leeward roof face.


日本建築学会研究報告. 九州支部. 1, 構造系 | 2015

206 Tornadic load affected by suddenly-dropped atmospheric pressure due to tornado : Part 1 an experimental system for generating suddenly-dropped pressure under calm condition

Kosei Minami; Shunsuke Takahashi; Kensuke Takase; Kazuhiro Otsubo; Norio Tsuru; Junji Maeda


Journal of Wind and Engineering | 2015

Relationship of Overshoot Wind Forces Acting on Gable Roof Structures to Pressure Distributions Caused by Sudden-Changes of Wind Velocity

Kazuhiro Otsubo; Junji Maeda


都市・建築学研究 | 2014

Wind Force Measurement System for Three-Dimensional Roof Body under a Gusty Wind

駿介 高橋; Shunsuke Takahashi; 和広 大坪; Kazuhiro Otsubo; 則生 鶴; Norio Tsuru; 潤滋 前田; Junji Maeda


日本建築学会研究報告. 九州支部. 1, 構造系 | 2014

225 Properties of Wind Pressure Distribution on a Gabled Roof Structure under Gust from Steady Wind

Sho Ishizaki; Masana Takahashi; Kazuhiro Otsubo; Norio Tsuru; Eriko Tomokiyo; Junji Maeda


日本建築学会研究報告. 九州支部. 1, 構造系 | 2014

218 Estimation of Damage Wind Velocity against a Structure in Consideration of Rapid Barometric Depression due to Tornado

Kensuke Takase; Kazuhiro Otsubo; Junji Maeda


Journal of Structural and Construction Engineering (transactions of Aij) | 2014

UNSTEADY WIND PRESSURE ON A BODY UNDER SHORT-RISE-TIME GUST

Takashi Takeuchi; Junji Maeda; Kazuhiro Otsubo; Eriko Tomokiyo


都市・建築学研究 | 2013

Wind Pressure of Gabled Roof Building under a Gusty Wind in its Gable Wall Direction Based on Wind Tunnel Test

正名 高橋; 和広 大坪; 則生 鶴; 衣利子 友清; 潤滋 前田; Masana Takahashi; Kazuhiro Otsubo; Norio Tsuru; Eriko Tomokiyo; Junji Maeda


都市・建築学研究 | 2013

The Effects of Roof Pitch on Wind Pressure of a Gabled Structure under a Short-rise-time Gust.

和広 大坪; 正名 高橋; 直哉 田村; 衣利子 友清; 潤滋 前田; Kazuhiro Otsubo; Masana Takahashi; Naoya Tamura; Eriko Tomokiyo; Junji Maeda


Eighth Asia-Pacific Conference on Wind Engineering | 2013

Acting Effects of Roof Pitch of a Gabled Structure on Wind Force on under a Short-rise-time Gust

和広 大坪; Kazuhiro Otsubo; 衣利子 友清; Eriko Tomokiyo; 則生 鶴; Norio Tsuru; 潤滋 前田; Junji Maeda

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