Takenobu Michioka

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Name
Takenobu Michioka
Affiliation
Kindai University
Section
Faculty of Science and Engineering Department of Mechanical Engineering

Research Areas

 
 

Published Papers

 
Takenobu Michioka
International Journal of Heat and Mass Transfer   125 569-579   Oct 2018
© 2018 Elsevier Ltd Large-eddy simulation is implemented for turbulent flow and gas dispersion over wavy walls across a wide range of the wave amplitude to wavelength ratio (α = 1.0, 1.5, and 2.0). Two tracer gases are emitted from point sources l...
Takenobu Michioka, Hiroshi Takimoto, Hiroki Ono, Ayumu Sato
Boundary-Layer Meteorology   168 247-267   Aug 2018
© 2018, Springer Science+Business Media B.V., part of Springer Nature. The effects of fetch on turbulent flow and pollutant dispersion within a canopy formed by regularly-spaced cubical objects is investigated using large-eddy simulation. Six trac...
T. Michioka, T. Michioka, H. Takimoto, H. Ono, A. Sato
Asian Journal of Atmospheric Environment   11 270-282   Dec 2017
To evaluate the deposition amount on a ground surface, mesoscale numerical models coupled with atmospheric chemistry are widely used for larger horizontal domains ranging from a few to several hundreds of kilometers; however, these models are rare...
Michioka Takenobu, Takimoto Hiroshi, Ono Hiroki, Sato Ayumu
BOUNDARY-LAYER METEOROLOGY   164(3) 401-418   Sep 2017   [Refereed]
小野浩己, 瀧本浩史, 佐藤歩, 道岡武信, 道岡武信, 佐田幸一
大気環境学会誌   52(1) 19‐29   Jan 2017
鈴木直弥, 早稲田卓爾, 道岡武信, 辰巳公亮, 竹本剛志
海洋理工学会誌(Web)   23(1) 11‐19(J‐STAGE)   2017
小野浩己, 瀧本浩史, 道岡武信, 佐藤歩, 佐田幸一
大気環境学会誌   51(3) 161-173   May 2016
Takenobu Michioka, Hiroshi Takimoto, Hiroki Ono, Ayumu Sato
Boundary-Layer Meteorology   1-15   Feb 2016
© 2016 Springer Science+Business Media DordrechtLarge-eddy simulation is conducted to investigate the effect of fetch on the pollutant-removal mechanism from a two-dimensional street canyon with a building-height to street-width (aspect) ratio of ...
Kazutaka Takata, Takenobu Michioka, Ryoichi Kurose
Atmosphere   7    Jan 2016
© 2016 by the authors.Heated moist air from a cooling tower forms a visible plume and needs to be predicted, not only for the performance design of the cooling tower, but also for environmental impact assessments. In this study, a computational fl...
Takenobu Michioka, Koichi Sada, Kazuki Okabayashi
Atmosphere   7    Jan 2016
© 2016 by the authors.Wind-tunnel experiments were conducted to evaluate the effect of additional structure (building, sea wall and banking) on the effective stack height, which is usually used in safety analyses of nuclear power facilities in Jap...
小野浩己, 瀧本浩史, 道岡武信, 佐藤歩
日本建築学会環境系論文集   (718) 1143-1151   Dec 2015
瀧本浩史, 小野浩己, 佐藤歩, 道岡武信, 佐田幸一
大気環境学会誌   50(5) 226-232   Sep 2015
Takenobu Michioka, Hiroshi Takimoto, Ayumu Sato
Boundary-Layer Meteorology   150 259-275   Jan 2014
Large-eddy simulations were conducted to investigate the mechanism of pollutant removal from a three-dimensional street canyon. Five block configurations with aspect ratios (building height to length) of 1, 2, 4, 8 and ∞ were used to create an urb...
TANNO Kenji, NODA Naoki, YAMAMOTO Toru, KUROSE Ryoichi, MICHIOKA Takenobu, MAKINO Hisao
粉体工学会誌   50(10) 733-740   Oct 2013
Kenji Tanno, Ryoichi Kurose, Takenobu Michioka, Hisao Makino, Satoru Komori
Advanced Powder Technology   24 879-885   Sep 2013
Selective catalytic reaction is a very efficient method to reduce NO x emissions from thermal power plants and is widely used in Japan. To develop a higher performance de-NOx system and optimize its maintenance schedule, it is important to underst...
T. Michioka, A. Sato, K. Sada
Atmospheric Environment   75 153-162   Aug 2013
A microscale large-eddy simulation (LES) model coupled to a mesoscale LES model is implemented to estimate a ground concentration considering the meteorological influence in an actual urban district. The microscale LES model is based on a finite v...
Hiroshi Takimoto, Atsushi Inagaki, Manabu Kanda, Ayumu Sato, Takenobu Michioka
Boundary-Layer Meteorology   147 217-236   May 2013
We examine the similarity of turbulent organized structures over smooth and very rough wall flows. Turbulent flow fields in horizontal cross-sections were measured using particle image velocimetry, and the characteristics of turbulent organized st...
TANNO Kenji, KUROSE Ryoichi, MICHIOKA Takenobu, MAKINO Hisao, KOMORI Satoru
粉体工学会誌   50(3) 204-211   Mar 2013
Tanno Kenji, Noda Naoki, Yamamoto Toru, Kurose Ryoichi, Michioka Takenobu, Makino Hisao
Journal of the Research Association of Powder Technology, Japan   50(10) 733-740   2013
In coal-fired power plants, selective catalytic de-NOx systems are widely used and offer a very efficient method to reduce NOx emissions from such plants. However, de-NOx catalyst degrades in long-term operation and catalysts must be periodically ...
Tanno Kenji, Kurose Ryoichi, Michioka Takenobu, Makino Hisao, Komori Satoru
Journal of the Research Association of Powder Technology, Japan   50(3) 204-211   2013
In coal-fired thermal power plants, selective catalytic de-NOx system is widely used and very efficient method to reduce NOx emission from the plant. However, ash particles laden in flue gas adhere on a de-NOx catalyst surface, and ash coverage ca...
Takenobu Michioka, Ayumu Sato
Boundary-Layer Meteorology   145 469-484   Dec 2012
Large-eddy simulations are conducted to investigate the effects of the incoming turbulent structure of the flow on pollutant removal from an ideal canyon. The target canyon is a two-dimensional street canyon with an aspect ratio of 1. 0 (building ...
SADA Koichi, SATO Ayumu, MICHIOKA Takenobu, ICHIKAWA Yoichi
大気環境学会誌 = Journal of Japan Society for Atmospheric Environment   47(6) 261-269   Nov 2012
TANNO Kenji, KUROSE Ryoichi, MICHIOKA Takenobu, MAKINO Hisao, KOMORI Satoru
Journal of the Research Association of Powder Technology, Japan   49(10) 738-744   Oct 2012
In a coal-fired thermal power plant, ash particles laden in flue gas adhere on de-NOx catalyst surface, and ash coverage causes the degradation of de-NOx catalyst. Therefore, in this study, effect of the flow in a honeycomb rectangular channel, wh...
MICHIOKA Takenobu, SATO Ayumu
大気環境学会誌 = Journal of Japan Society for Atmospheric Environment   47(3) 119-126   May 2012
Ryoichi Kurose, Naohisa Takagaki, Takenobu Michioka, Naoki Kohno, Satoru Komori
AIChE Journal   58 377-384   Feb 2012
The subgrid scale (SGS) variance for a high-Schmidt-number passive scalar of Sc >> 1 is measured using a high-resolution planar laser-induced fluorescence technique in a grid-generated turbulent liquid flow, and the values of the model coefficient...
MICHIOKA Takenobu, SATO Ayumu
PROCEEDINGS OF THE JAPANESE CONFERENCE ON HYDRAULICS   68(4) I_1795-I_1800   2012
Large-eddy simulation was implemented for airflow and thermal diffusion in an urban canyon. To evaluate the performance of the LES, the mean velocities, standard deviations of turbulent fluctuations and mean temperature estimated by the LES are co...
A. Sato, T. Michioka, H. Takimoto
International Journal of Environment and Pollution   47 184-192   Dec 2011
Field experiments of air flow and pollution dispersion within a street canyon in the Comprehensive Outdoor Scale Model (COSMO) facility were conducted to investigate the effect of the mean and turbulent flow above the canyon on pollutant dispersio...
Takenobu Michioka, Ayumu Sato, Koichi Sada
Boundary-Layer Meteorology   141 35-51   Oct 2011
Large-scale turbulent motions enhancing horizontal gas spread in an atmospheric boundary layer are simulated in a wind-tunnel experiment. The large-scale turbulent motions can be generated using an active grid installed at the front of the test se...
Ryoichi Kurose, Takenobu Michioka, Naoki Kohno, Satoru Komori, Yuya Baba
AIChE Journal   57 911-917   Apr 2011
Large-eddy simulations using the flamelet models are applied to turbulent reacting liquid flows and validated by comparing with the experiments. The computations are performed for two reaction conditions, namely a rapid reaction and a moderately f...
Takenobu Michioka, Ayumu Sato, Hiroshi Takimoto, Manabu Kanda
Boundary-Layer Meteorology   138 195-213   Jan 2011
Large-eddy simulation (LES) is conducted to investigate the mechanism of pollutant removal from a two-dimensional street canyon with a building-height to street-width (aspect) ratio of 1. A pollutant is released as a ground-level line source at th...
MICHIOKA Takenobu, SATO Ayumu, HATTORI Yasuo
Transactions of the Japan Society of Mechanical Engineers. B   76(765) 823-829   May 2010
A wind tunnel experiment was conducted to simulate large-scale turbulent motions in an atmospheric boundary layer (ABL). The large-scale turbulent motions originating from outer-layer disturbance were generated using an active grid installed at th...
MICHIOKA Takenobu, SATO Ayumu, SADA Koichi
Transactions of the Japan Society of Mechanical Engineers. B   75(752) 604-611   Apr 2009
A Large-eddy simulation (LES) was developed to predict a visible plume region from a mechanical-draft cooling tower. This numerical model solves the equations for conservation of mass, momentum, energy, vapor and liquid water. It is assumed that t...
MICHIOKA Takenobu, SATO Ayumu, SADA Koichi
Transactions of the Japan Society of Mechanical Engineers. B   75(749) 93-100   Jan 2009
We developed a method for a wind tunnel experiment to predict a visible plume region from a mechanical-draft cooling tower. The diffusions of water vapor and temperature emitted from the cooling tower in the wind tunnel experiment are tracked usin...
Shimota Akiro, Michioka Takenobu, Sada Koichi, Sato Ayumu, Kanzaki Takao, Wada Koji, Ichikawa Yoichi
Journal of Japan Society of Air Pollution   44(5) 255-261   2009
Recently, power plant's cooling towers equipped with instruments for preventing plume to visualize, which is a mechanical-draft cooling tower, tend to be planned and be constructed in Japan. Traditional ways of environmental assessment for a cooli...
Michioka Takenobu, Sato Ayumu, Shimota Akiro, Sada Koichi, Ichikawa Yoichi, Okura Arata
Journal of Japan Society of Air Pollution   44(5) 227-235   2009
A new visible plume model is developed to predict visible plume, temperature, moisture and droplet from a mechanical-draft cooling tower. The developed model is a normal Gaussian plume model for moisture and temperature, considering fan configurat...
Michioka Takenobu, Sato Ayumu, Sada Koichi, Shimota Akiro, Ichikawa Yoichi
Journal of Japan Society of Air Pollution   44(3) 147-154   2009
We developed new plume rise and diffusion models for gas dispersion from a mechanical-draft cooling tower. Wind tunnel experiments were conducted to investigate effects of fan location and cooling tower configuration on gas dispersion from the coo...
Koichi Sada, Takenobu Michioka, Yoichi Ichikawa
Asian Journal of Atmospheric Environment   2 1-13   Jun 2008
A numerical simulation method has been developed to predict atmospheric flow and stack gas diffusion using a calculation domain of several km around a stack under complex terrain conditions containing buildings. The turbulence closure technique us...
SATO AYUMU, TAKIMOTO HIROSHI, MICHIOKA TAKENOBU
PROCEEDINGS OF NATIONAL SYMPOSIUM ON WIND ENGINEERING   20(0) 21-21   2008
A wind tunnel experiment was conducted to investigate the effects of unstable stratification on cavity flow behind a cubical building. Mean and fluctuation velocities were measured by both laser Doppler anemometry and particle image velocimetry in...
Takenobu Michioka, Ayumu Sato, Takao Kanzaki, Kouichi Sada
Journal of Wind Engineering and Industrial Aerodynamics   95 741-754   Aug 2007
We developed a new method for a wind tunnel experiment to predict a visible plume region from a wet cooling tower. The diffusion of water vapor and heat emitted from a cooling tower in a wind tunnel is estimated using a tracer gas. The instantaneo...
MICHIOKA Takenobu, KUROSE Ryoichi
Transactions of the Japan Society of Mechanical Engineers Series C   73(725) 30-37   2007
Three-dimensional large-eddy simulation (LES) is applied to a particle-laden swirling jet, and the effect of swirl on particle diffusion is investigated. The trajectories of all particles are individually pursued with a Lagrangian method. The part...
Kurose Ryoichi, Michioka Takenobu, Makino Hisao, Komori Satoru
Journal of the Research Association of Powder Technology, Japan   44(2) 107-112   2007
Effect of flow behavior in a honeycomb rectangular channel of a de-NOX catalyst on the adhesion of particles onto the wall is studied using a direct numerical simulation (DNS). The results show that the adhesion of particles is markedly affected b...
Takenobu Michioka, Ryoichi Kurose, Ryoichi Kurose, Kouichi Sada, Hisao Makino
International Journal of Multiphase Flow   31 843-866   Jul 2005
A direct numerical simulation (DNS) is applied to a particle-laden turbulent mixing layer with a chemical reaction, and the effects of particles on turbulence and chemical species' diffusion and reaction in both zero and finite gravity cases are i...
Takenobu Michioka, Takenobu Michioka, Satoru Komori
AIChE Journal   50 2705-2720   Nov 2004
A subgrid-scale (SGS) model for the filtered reaction source term is presented to develop the large-eddy simulation (LES) of a nonpremixed, turbulent liquid flow with a moderately fast reaction. The SGS model is based on the SGS probability densit...

Misc

 
白石涼, 道岡武信, 鈴木直弥
日本機械学会計算力学講演会論文集(CD-ROM)   30th ROMBUNNO.043   Sep 2017
林将史, 道岡武信
日本機械学会計算力学講演会論文集(CD-ROM)   30th ROMBUNNO.042   Sep 2017
瀧本浩史, 小野浩己, 佐藤歩, 岸田岳士, 道岡武信, 道岡武信
大気環境学会年会講演要旨集   58th 557   Aug 2017
道岡武信, 林将史
大気環境学会年会講演要旨集   58th 512   Aug 2017
道岡武信, 瀧本浩史, 小野浩己, 佐藤歩
数値流体力学シンポジウム講演論文集(CD-ROM)   31st ROMBUNNO.B05‐1   2017
小野浩己, 瀧本浩史, 佐藤歩, 道岡武信, 道岡武信
大気環境学会年会講演要旨集   57th 184   Aug 2016
後藤文之, 道岡武信, 庄子和博
農業施設学会大会講演要旨   2016 113‐114   Aug 2016
道岡武信, 瀧本浩史, 小野浩己, 佐藤歩
大気環境学会年会講演要旨集   57th 183   Aug 2016
瀧本浩史, 小野浩己, 佐藤歩, 道岡武信, 道岡武信
大気環境学会年会講演要旨集   57th 185   Aug 2016
村上貴裕, 石川智巳, 服部康男, 中尾圭佑, 道岡武信, 渡辺雅人, 篠崎孝一, 河口泰士
電気学会全国大会講演論文集(CD-ROM)   2016 ROMBUNNO.7-114   Mar 2016
道岡武信, 瀧本浩史, 小野浩己, 佐藤歩
数値流体力学シンポジウム講演論文集(CD-ROM)   30th ROMBUNNO.C06‐1   2016
松本勇太, 香月壮亮, 道岡武信, 佐藤歩
大気環境学会年会講演要旨集   56th 250   Sep 2015
瀧本浩史, 小野浩己, 佐藤歩, 道岡武信, 道岡武信
大気環境学会年会講演要旨集   56th 186   Sep 2015
小野浩己, 瀧本浩史, 佐藤歩, 道岡武信, 道岡武信
大気環境学会年会講演要旨集   56th 185   Sep 2015
瀧本浩史, 道岡武信, 佐藤歩, 佐田幸一
電力中央研究所原子力リスク研究センター研究報告   (O14004) 25P   May 2015
道岡武信
可視化情報学会誌   35(137) 64-69,45(3)   Apr 2015
道岡武信, 瀧本浩史, 小野浩己, 佐藤歩
数値流体力学シンポジウム講演論文集(CD-ROM)   29th ROMBUNNO.A08-5   2015
ONO Hiroki, TAKIMOTO Hiroshi, MICHIOKA Takenobu, SATO Ayumu
Summaries of technical papers of annual meeting   2014(0) 665-666   Sep 2014
小野浩己, 瀧本浩史, 佐藤歩, 道岡武信
大気環境学会年会講演要旨集   55th 230   Aug 2014
瀧本浩史, 佐藤歩, 小野浩己, 道岡武信
大気環境学会年会講演要旨集   55th 229   Aug 2014

Research Grants & Projects

 
Ministry of Education, Culture, Sports, Science and Technology: Grants-in-Aid for Scientific Research(若手研究(B))
Project Year: 2011 - 2012    Investigator(s): Takenobu MICHIOKA
Large-eddy simulations were conducted to investigate mechanismof pollutant gas removal form urban canyons under neutral, stable and unstable thermalstratification. The result shows that the gas removal from the canyon is strongly relatedto the siz...