研究者詳細 - 鈴木　博貴

論文 - 鈴木　博貴

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自動車用送風機の電力回生に関する研究（高ソリディティ翼による実車での風車出力向上）査読

織田信一, 長谷川豊, 鈴木博貴, 牛島達夫, 大矢英樹

日本機械学会論文集 81 ( 829 ) 15-00042 - (12 pages) 2015年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：The Japan Society of Mechanical Engineers

This work aims at developing a new cooling fan for vehicle engine. This fan can operate as a cooling fan at low vehicle speed. At high vehicle speed, however, the fan is rarely used as a cooling fan. Therefore the fan can be used as a wind turbine, which generates electric power. In the previous report we had confirmed the effect of S-Shaped blade profile on the wind turbine efficiency by CFD analysis and the experiments. The present paper reports the enhancement of wind turbine power by installing high solidity rotor on a vehicle. High solidity rotor can increase the wind turbine efficiency and receive more input power due to the increased rate of the rotor resistance to the total resistance through the cooling system, although the air flow rate through the system decreases. We confirmed by the estimation and the actual vehicle test that the high solidity rotor can regenerate more electric power than the original low solidity rotor.

DOI： 10.1299/transjsme.15-00042

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自動車用送風機の電力回生に関する研究（高ソリディティ翼による風車性能の向上）査読

織田信一, 長谷川豊, 鈴木博貴, 牛島達夫

日本機械学会論文集 81 ( 827 ) 15-00069 2015年7月

PIV計測システムの開発と格子乱流の計測

鈴木博貴, 長田孝二, 酒井康彦

可視化情報学会誌 35 ( 139 ) 29 - 34 2015年

記述言語：英語出版者・発行元：社団法人可視化情報学会

本研究は，PIV計測システムの開発と，開発したPIV計測システムを格子乱流計測に適用して検証した．本稿ではまず，研究背景およびPIV処理系の独自開発に至った動機を述べる．次に，開発した本PIV計測について，まず概要を述べたのち，解析法に重点をおいて述べる．ここでは，本PIV計測の特徴の一つである補間処理についても述べる．つづいて，本PIV計測システムを格子乱流の計測に適用した結果を，対象の流れ場と計測条件が述べられたのちに，示す．計測結果において，まず瞬時量や基本特性が示されたのち，速度変動強度の減衰が従うベキ則が示される．本計測では，このベキ則の係数を任意性なく決めるために，速度変動強度に加えて粘性散逸を用いており，これに及ぼすノイズの影響についても本稿で示される．粘性散逸を用いて算出された係数値は，先行研究の結果と良く一致し，これが一致する点において，本PIV計測システムが検証される．

DOI： 10.3154/jvs.35.139_29

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小型風車における空気密度変化に起因する運転周速比変化の定量化に関する基礎検討査読

鈴木博貴, 長谷川豊, 牛島達夫

(全文審査付) 第23回風工学シンポジウム論文集 23 103 - 108 2014年12月

自動車用送風機の電力回生に関する研究 (翼型改良による風車性能の向上）査読

織田信一, 長谷川豊, 鈴木博貴, 牛島達夫

日本機械学会論文集 80 ( 819 ) FE0315 - (11 pages) 2014年12月

Improvement of Rotor Configuration for Achievement of Automotive Fan-Turbine System 査読

Shinichi Oda, Yutaka Hasegawa, Hiroki Suzuki, Tatsuo Ushijima

(全文査読付) Proceedings of the Grand Renewable Energy 2014 International Conference and Exhibition Paper No. O-Wd-15-2 - (4 pages) 2014年7月

A 3D Navier-Stokes Simulation under Staggered/Collocated Grids with High-Kinetic-Energy-Conservation 査読

Hiroki Suzuki, Shinnosuke Matsuo, Masaya Watanabe, Yutaka Hasegawa, Tatsuo Ushijima

(全文査読付) Proceedings of the Grand Renewable Energy 2014 International Conference and Exhibition Paper No. P-Wd-2-22 - (3 pages) 2014年7月

Effects of Blade Aspect Ratio on Aerodynamic Performance of Turbine Blade in Wing-Stroke Motion 査読

Hironori Nakano, Noriyuki Tanimura, Yutaka Hasegawa, Hiroki Suzuki, Tatsuo Ushijima

(全文査読付) Proceedings of the Grand Renewable Energy 2014 International Conference and Exhibition Paper No. P-Wd-1-33 - (4 pages) 2014年7月

Study of Tower Effects on Rotor Characteristics of Horizontal Axis Wind Turbine 査読

Noriyuki Tanimura, Yutaka Hasegawa, Hiroki Suzuki, Fumiya Hara, Tatsuo Ushijima

(全文査読付) Proceedings of the Grand Renewable Energy 2014 International Conference and Exhibition Paper No. P-Wd-1-22 - (4 pages) 2014年7月

Development and Application of a Navier-Stokes Simulation Code with High- Kinetic-Energy-Conservation 査読

Hiroki Suzuki, Shinnosuke Matsuo, Yutaka Hasegawa, Tatsuo Ushijima

(全文査読付) Proceedings of the Grand Renewable Energy 2014 International Conference and Exhibition Paper No. O-Wd-1-2 - (3 pages) 2014年7月

PLIF法計測による統計分布に及ぼす時間変化/変動ノイズの影響予測（量子収率の時間変化・励起光強度・カメラゲイン変動の影響予測式と実験的検証）査読

鈴木博貴, 長田孝二, 酒井康彦, 長谷川豊, 牛島達夫

日本機械学会論文集 80 ( 813 ) FE0114 2014年5月

Development of turbulence behind the single square grid 査読

Physics of Fluids 26 ( 4 ) 045102 - (17 pages) 2014年4月

DNS Study on the Development of Boundary Layer with Heat Transfer under the Effects of External and Internal Disturbances 査読

Shuang XIA, Yasumasa Ito, Koji Nagata, Yasuhiko Sakai, Hiroki Suzuki, Osamu Terashima, Toshiyuki Hayase

Journal of Fluid Science and Technology 9 ( 1 ) JFST0005 - (13 pages) 2014年3月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：The Japan Society of Mechanical Engineers

The effects of external and internal disturbances on the development of boundary layer with heat transfer are investigated by means of direct numerical simulation (DNS) based on the finite difference scheme. The fractional step method is used to solve the governing equations. The external disturbance is generated by a regular turbulence-generating grid, while the internal disturbance is generated by a tripping object mounted on the wall. In order to clarify the momentum and heat transfer mechanism in a boundary layer under these effects, the instantaneous and statistical characteristics of velocity and temperature fields are presented and discussed along with their interactions. The results show that the boundary layer in the case with grid turbulence becomes turbulent even though the Reynolds number based on the momentum thickness is low. On the other hand, in the case with the tripping object, only low-amplitude fluctuations are generated in the vicinity of the tripping object and the boundary layer does not fully developed. The grid increases the skin friction and enhances heat transfer more significantly than the tripping object. It is also found that strong strain in the viscous sublayer, which is induced by the vortical motion in the buffer layer, contributes to the enhancement of heat transfer.

DOI： 10.1299/jfst.2014jfst0005

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Relevance of turbulence behind the single square grid to turbulence generated by regular- and multiscale-grids 査読

Physics of Fluids 26 ( 7 ) 075105 - (22 pages) 2014年

Study on Blade Elasticity Influence on Blade Load Characteristics of NREL Turbine 査読

Fumiya Hara, Yutaka Hasegawa, Noriyuki Tanimura, Hiroki Suzuki, Tatsuo Ushijima

(全文査読付) Proceedings of the International Symposium on EcoTopia Science 2013 Paper No. 1063 - (1 page) 2013年12月

Numerical Study of Dynamic Inflow Effects on Aerodynamic Response of HAWT Rotor 査読

Yuta Taniguchi, Yutaka Hasegawa, Noriyuki Tanimura, Hiroki Suzuki, Tatsuo Ushijima

(全文査読付) Proceedings of the International Symposium on EcoTopia Science 2013 Paper No. 1034 - (1 page) 2013年12月

直接数値計算による格子乱流の解析（不変量およびRottaモデルについて）査読

鈴木博貴, 長田孝二, 酒井康彦, 早瀬敏幸, 長谷川豊, 牛島達夫

日本機械学会論文集（B編） 79 ( 807 ) 2363 - 2374 2013年11月

担当区分：筆頭著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：The Japan Society of Mechanical Engineers

The aim of this study is to address the essential features of experimental decaying grid-generated turbulence. Specifically, this study has focused on invariants of grid turbulence in the downstream region and Rotta model by means of direct numerical simulation based on the finite difference method. The mesh Reynolds number defined by the mesh size of the grid M, streamwise mean velocity and kinematic viscosity is 2; 500. Streamwise computational domain size is 112 M. The result shows that u²_oL⁴ is nearly constant such that u²_oL⁴ ∝ X^0:08 in the far downstream region, where X = x/M - x_o/M, x is the streamwise distance from the grid and x_o is the virtual origin. Rotta model is applicable in the region holding u²_oL⁴ = constant, and value of the Rotta constant is almost 1. The value can be well estimated by an estimation method introduced by previous experiments.

DOI： 10.1299/kikaib.79.2363

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DNS of Channel Flow with Two-Scale Surface Roughness on One Wall 査読

Hiroki Suzuki, Richard J. Perkins

(全文査読付) Proceedings of the 14th European Turbulence Conference Paper No. 115 - (2 pages) 2013年9月

Study on the Effects of Grid-Generated Turbulence on the Initial Growth of Turbulent Boundary Layer by Direct Numerical Simulation 査読

S. Xia, Y. Ito, K. Nagata, Y. Sakai, H. Suzuki, O. Terashima, T. Hayase

(全文査読付) Proceedings of the 4th International Conference on Jets, Wakes and Separated Flows paper No. 1169 - (4 pages) 2013年9月

Direct Numerical Simulation of Single-Square Grid-Generated Turbulence 査読

Y. Zhou, K. Nagata, Y. Sakai, H. Suzuki, Y. Ito, O. Terashima, T. Hayase

(全文査読付) Proceedings of the 4th International Conference on Jets, Wakes and Separated Flows paper No. 1102 - (5 pages) 2013年9月

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