研究者業績

渡邉 摩理子

ワタナベ マリコ  (Mariko Watanabe)

基本情報

所属
上智大学 理工学部機能創造理工学科 准教授
学位
博士(工学)(2005年3月 大阪大学)

J-GLOBAL ID
201301010084643722
researchmap会員ID
7000004360

研究テーマ

  • 火災旋風の振動現象に関する研究
  • ガソリンエンジン後処理フィルターの開発​
  • 空気流による非接触把持機器の開発​

研究キーワード

 3

論文

 32
  • Mariko Watanabe, Koki Okamoto
    Journal of Flow Control, Measurement & Visualization 11(02) 15-29 2023年3月  査読有り筆頭著者責任著者
  • Jobu Watanabe, Mariko Watanabe
    Biocybernetics and Biomedical Engineering 39(2) 526-535 2019年4月  査読有り
  • Mariko Watanabe, Joji Yahagi
    Journal of Flow Control, Measurement & Visualization 5 99-110 2017年10月  査読有り筆頭著者責任著者
  • Koki Okamoto, Mariko Watanabe, Tetsuhiro Tsukiji
    The 9th JSME-KSME Thermal and Fluids Engineering Conference 1183 2017年10月  査読有り
  • Junichi Suematsu, Tetsuhiro Tsukiji, Mariko Watanabe, Shinji Yakabe, Hirohito Watanabe, Yoshinori Nakamura, Kazunari Suzuki
    Proceedings of 2015 Autumn Conference on Drive & Control 3-7 2015年10月  
  • Kensyo Takahashi, Mariko Watanabe, Jobu Watanabe
    The 9th JFPS International Symposium on Fluid Power 2D3-1 2014年10月  
  • Kei Watanabe, Rina Nakagawa, Tetsuhiro Tsukiji, Mariko Watanabe, Keiji Saito, Shinji Yakabe
    Proceedings of the 12th International Symposium on Fluid Control, Measurement and Visualization OS1-01-1-42 2013年11月  
  • Mariko Watanabe, Daisuke Tanaka
    Computers & Chemical Engineering 54 151-158 2013年5月  査読有り筆頭著者責任著者
  • Mariko Watanabe
    Proceedings of the 23rd International Symposium on Transport Phenomena (ISTP-23) 177 2012年11月  筆頭著者責任著者
  • Motoki Sato, Mariko Watanabe, Fumiteru Akamatsu
    Proceedings of the 23rd International Symposium on Transport Phenomena (ISTP-23) 193 2012年11月  
  • Yuhei Murakami, Mariko Nakamura
    Proceedings of the 8th KSME-JSME Thermal and Fluids Engineering Conference GST-5-003 2012年3月  
  • Mariko Nakamura, Daichi Nishioka, Jun Hayashi, Fumiteru Akamatsu
    COMBUSTION AND FLAME 158(8) 1615-1623 2011年8月  査読有り筆頭著者責任著者
    Coaxial jet spray flames of kerosene and oxygen are experimentally studied over a pressure range of 0.1-1.0 MPa to determine the relationship between flame structure, droplet behavior, and soot formation region, which varies with changes in pressure. The direct images and chemiluminescence spectra show that the spray flames have three regions: the blue flame region, which has a peak of CH* and C-2* radical chemiluminescence, luminous flame region caused by soot emission, and blue emission region caused by CO2 emission. With increase in ambient pressure, the flame length shortens drastically, the luminous flame region envelopes the blue flame region, and the blue emission becomes more intense. The result of phase-Doppler anemometry shows that a large number of small droplets evaporate and disappear near the burner, and the evaporation of large droplets also occurs rapidly under high pressure. The result of temperature measurements shows that high-temperature regions appear near the burner. The flame temperature drastically decreases along the central axis, and a minimum temperature point appears. This point moves upstream with increase in ambient pressure because evaporation of the droplets occurs further upstream. A laser-induced incandescence measurement shows that the soot volume fraction does not monotonously increase or decrease with increase in ambient pressure. The soot volume fraction at the central axis becomes low upstream and high downstream. As pressure increases, the vertical position at which the peak of soot volume fraction appears at the central axis moves upstream. (C) 2011 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
  • 上山篤史, 守家智士, 中村摩理子, 梶島岳夫
    日本機械学会論文集B編 77(775) 803-814 2011年3月  査読有り
  • Mariko Nakamura
    Proceedings of the 21st International Symposium on Transport Phenomena (ISTP-21) 210 2010年11月  筆頭著者責任著者
  • 西岡大智, 中村摩理子, 林潤, 赤松史光
    日本機械学会論文集B編 76(768) 1297-1304 2010年  査読有り
  • Masahiko Shibahara, Takao Toshima, Mariko Nakamura
    Proceedings of the Fifth Taiwan-Japan Workshop on Mechanical and AeroEngineering 383-389 2009年10月  
  • Mariko Nakamura
    AIP conference proceedings of International Conference on Numerical Analysis and Applied Mathematics 2009(2) 681-684 2009年9月  査読有り筆頭著者責任著者
    This study conducts two-dimensional direct numerical simulations of a planar spray jet to investigate the effects of pressure on droplet behavior, especially evaporation. For the gaseous phase, Eulerian mass, momentum, energy, and species conservation equations are solved. For the disperse phase, the fuel droplets are tracked individually in a Lagrangian manner. Gaseous properties and liquid/vapor equilibrium are estimated based on ideal gas assumption because of the pressure being less than 0.5 MPa. The results show that the lifetime of a droplet changes with changes in pressure. This is because the evaporation rate of each droplet is affected by the ambient pressure and the dispersion of droplets changes as the ambient pressure increases. Moreover, the trend of the change on droplet lifetime changes with change in the ambient temperature.
  • 中村摩理子, 中尾祥典, 西岡大智, 黄承敏, 林潤, 赤松史光
    日本機械学会論文集B編 75(750) 354-362 2009年2月  査読有り筆頭著者責任著者
  • Daichi Nishioka, Mariko Nakamura, Seung-Min Hwang, Yoshinori Nakao, Fumiteru Akamatsu
    Proceedings of the 7th JSME-KSME Thermal and Fluids Engineering Conference D135 2008年10月  
  • Mariko Nakamura
    AIP conference proceedings of International Conference on Numerical Analysis and Applied Mathematics 2008 791-793 2008年9月  査読有り筆頭著者責任著者
    Two-dimensional direct numerical simulations are applied to a planar jet spray flow in order to investigate the effects of pressure on droplet behavior. For the gaseous phase, Eulerian mass, momentum, energy, and species conservation equations are solved. For the disperse phase, the fuel droplets are tracked individually in a Lagrangian manner. Concerning the vaporization of droplets, a nonequilibrium Langmuir-Knudsen evaporation model is adopted. The results show that the droplet mean diameter increases as the distance from the nozzle increases; however, because evaporation does not progress rapidly at normal temperature, the change in the droplet mean diameter with the increase in the distance from the nozzle is small for each pressure condition. The droplet mean velocity decreases as the droplets move downstream for each pressure condition, and the gradient of the droplet mean velocity toward the axial direction differs with each pressure condition.
  • Mariko Nakamura, Seung-Min Hwang, Yoshinori Nakao, Daichi Nishioka, Jun Hayashi, Fumiteru Akamatsu
    Proceedings of the 3rd IASME/WSEAS International Conference on ENERGY & ENVIRONMENT 51-54 2008年2月  筆頭著者責任著者
    Coaxial jet spray flames of kerosene/oxygen are studied experimentally in the pressure range of 0.1-1.0 MPa. The flame shapes are observed directly, and phase Doppler anemometry (PDA) is used to measure the size distributions and axial velocity components of droplets. Direct observation of flames indicates that the flame length decreases and the luminous flame region moves upstream with increase in ambient pressure. The droplet mean diameter increases and the droplet mean velocity decreases as the droplets move downstream under each pressure condition. In addition, the droplets mean diameter increases with increase in ambient pressure. The gradient of the mean velocity increases with increase in ambient pressure. These results show that spray flame shapes and droplet behavior are strongly affected by ambient pressure.
  • 藤田昌史, 辻幸志, 竹田尚弘, 皆川美絵, 中村摩理子, 味埜俊, 赤司昭
    水環境学会誌 30(12) 723-729 2007年12月  査読有り
    The numbers of ammonia-oxidizing bacteria (AOB), Nitrospira and Nitrobacter in a municipal wastewater treatment plant were examined for five months using a real-time PCR quantification technique. The numbers of AOB and Nitrospira were in the ranges of 3.8×1010-2.0×1011 and 4.7×1010-1.6×1011 cell · l-1, respectively. Additionally, the fractional percentages against the number of eubacteria were in the ranges of 2.1-7.6 and 2.6-7.0 %, respectively. Nitrobacter was less than 1 % as common as Nitrospira. On the other hand, the maximum ammonia- and nitrite-oxidizing rates obtained from aerobic batch tests ranged from 0.08 to 0.41 and from 0.10 to 0.27 mmol-N · l-1 · hr-1, respectively. No correlation between cell number and maximum rate was observed. The maximum cell-specific ammonia- and nitrite-oxidizing rates were then estimated to be in the range of 0.53-5.6 and 1.2-5.4 fmol-N·cell-1 · hr-1, respectively. In other words, even in the same wastewater treatment plant, these maximum cell-specific rates were not unique. To explore the factors controlling the maximum cell-specific ammonia-oxidizing rate, the relationship with in situ ammonia-oxidizing activity per cell was investigated. A fairly good correlation was obtained. The result indicates that the amount of ammonia oxidized per cell controls the maximum cell-specific ammonia-oxidizing rate and is the primary contributor to the variation. Meanwhile, the maximum cell-specific nitrite-oxidizing rate responded to the increase in the maximum cell-specific ammonia-oxidizing rate when the number of Nitrospira was less than that of AOB.
  • 中村摩理子, 赤松史光, 黒瀬良一, 香月正司
    日本機械学会論文集B編 72(723) 2792-2797 2006年11月  査読有り筆頭著者責任著者
  • 渡邊裕章, 黒瀬良一, 黄承敏, 中村摩理子, 赤松史光
    日本機械学会論文集B編 72(720) 2064-2071 2006年8月  査読有り
  • Mariko Nakamura, Fumiteru Akamatsu, Ryoichi Kurose
    Proceedings of 10th International Congress on Liquid Atomization and Spray Systems CD-ROM 2006年8月  筆頭著者
  • M Nakamura, F Akamatsu, R Kurose, M Katsuki
    JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING 49(2) 498-505 2006年5月  査読有り筆頭著者
    Experimental observations and numerical simulations are conducted on combustion processes of n-decane polydisperse spray entering a gaseous flat flame stabilized in a laminar 2D counterflow configuration. For the gaseous phase, Eulerian mass, momentum, energy, and species conservation equations are solved. For the disperse phase, all individual droplets are tracked without using a droplet parcel model. The experimental results show that blue flames and luminous flames are observed and there are unsteady changes in the behavior. The numerical results show that the spray flame structures vary depending on the supplied quantities of liquid fuel spray. Furthermore, the instantaneous flame structures are consistent with the typical flame structures observed with the experiment.
  • M Nakamura, F Akamatsu, R Kurose, M Katsuki
    PHYSICS OF FLUIDS 17(12) 123301-1-14 2005年12月  査読有り筆頭著者
    Two-dimensional direct numerical simulation is applied to spray flames stabilized in a laminar counterflow, and the detailed behavior is studied in terms of the droplet group combustion. The stretch ratio of the laminar counterflow is 40 1/s. n-decane (C10H22) is used as a liquid spray fuel, and a one-step global reaction is employed for the combustion reaction model. The results show that with increasing the issued liquid fuel mass fraction, two types of spray combustion appear in front of and inside the high gaseous temperature region, i.e., "premixed-like combustion" and "diffusion-like combustion," respectively. A droplet group combustion behavior is observed in the diffusion-like combustion region. This diffusion-like combustion, however, disappears when the issued droplet size becomes small, because the droplets complete their evaporation before entering into the high gaseous temperature region. The droplet group combustion tends to reduce the gaseous temperature. This is caused mainly by the suppression of combustion reaction due to the lack of oxygen and partially by the energy exchange through the convective heat transfer between droplets and gaseous phase. The gaseous temperature reduction is promoted by the latent heat of vaporization of the droplets. The use of the parcel approach has a risk of causing a delay of combustion reaction, since the partial fuel vapor pressure increases at limited locations, which suppresses the global droplet evaporation rate.
  • 中村摩理子, 赤松史光, 黒瀬良一, 香月正司
    日本機械学会論文集B編 71(711) 2761-1768 2005年11月  査読有り筆頭著者
  • Mariko Nakamura, Fumiteru Akamatsu, Ryoichi Kurose, Masashi Katsuki
    Proceedings of the 20th ICDERS 83 2005年8月  筆頭著者
  • 中村摩理子, 赤松史光, 黒瀬良一, 香月正司
    日本機械学会論文集B編 71(707) 1921-1928 2005年7月  査読有り筆頭著者
    Experimental observations and numerical simulations were conducted on combustion processes of n-decane polydisperse spray entering gaseous flat-flame stabilized in laminar 2D counterflow configuration. The experimental burner restrained the flow from fluctuating to investigate the effects of spray characteristics. Concerning the calculations, for the gaseous phase, we used Eulerian mass, momentum, energy, and species conservation equations. For the disperse phase, all the individual droplets were tracked without using a droplet parcel model. Firstly, we observed blue and luminous flames experimentally and the intensity of these flames changed unsteadily. Secondly, we examined the spray flame structure numerically should the supplied quantity of liquid fuel changed. Both timeaveraged and instantaneous spray flame structures varied depending on the quantities of spray. Furthermore, the instantaneous structures were consistent with the typical flame structures observed by the experiment. Consequently, these results show that the difference of the supplied liquid fuel spray can cause the variation of spray flame structures.
  • Ryoichi Kurose, Olivier Desjardins, Mariko Nakamura, Fumiteru Akamatsu, Heinz Pitsch
    Annual Research Briefs-2004, Center for Turbulence Research, NASA Ames/Stanford University 269-280 2004年8月  
  • R Kurose, H Makino, S Komori, M Nakamura, F Akamatsu, M Katsuki
    PHYSICS OF FLUIDS 15(8) 2338-2351 2003年8月  査読有り
    A three-dimensional numerical simulation of an isothermal flow past a solid sphere with outflow in a linear shear flow is performed to investigate the effects of the outflow on drag and shear lift. In addition, the effects of the outflow and the fluid shear on diffusion and reaction of reactant from the surface of the sphere are also discussed. The results show that the outflow reduces the drag, and, in the linear shear flow, acts to push the sphere to the lower fluid velocity side and promote the negative lift for the high particle Reynolds numbers. The diffusion and reaction of the reactant from the surface of the sphere are strongly affected by the outflow and the fluid shear because these factors cause the deformation of vortices appearing behind the sphere. (C) 2003 American Institute of Physics.

共同研究・競争的資金等の研究課題

 10

産業財産権

 2