MATSUDA, yu

写真a

Affiliation

Faculty of Science and Engineering, School of Creative Science and Engineering

Job title

Associate Professor

Concurrent Post 【 display / non-display

  • Faculty of Science and Engineering   Graduate School of Creative Science and Engineering

Research Institute 【 display / non-display

  • 2020
    -
    2022

    理工学術院総合研究所   兼任研究員

Degree 【 display / non-display

  • Nagoya University   Doctor of Engineering

Research Experience 【 display / non-display

  • 2018.10
    -
    Now

    Japan Science and Technology Agency

  • 2018.04
    -
    Now

    Waseda University   Faculty of Science and Engineering

  • 2015.10
    -
    2018.03

    Nagoya University   Institute of Materials and Systems for Sustainability Division of Systems Research   Associate professor

  • 2014.12
    -
    2015.09

    Nagoya University   EcoTopia Science Institute Division of Green Systems   Associate professor

  • 2008.04
    -
    2014.11

    Nagoya University   Graduate School of Engineering Department of Micro-Nano Systems Engineering   Assistant Professor

 

Research Areas 【 display / non-display

  • Fluid engineering

Papers 【 display / non-display

  • Mechanism of supersonic mixing enhancement by a wall-mounted three-dimensional cavity

    Masayuki Anyoji, Fujio Akagi, Yu Matsuda, Yasuhiro Egami, Taro Handa

    Acta Astronautica   188   491 - 504  2021.11

     View Summary

    The detailed mechanism of supersonic mixing enhancement by a novel device is investigated computationally based on the Navier-Stokes equations. The device is a wall-mounted three-dimensional cavity, several parts of the rear face of which are cut out, and the lower wall of the cut-out part has a slope directed toward the injector from which the injectant is discharged. The flow structures and behaviors observed in the computational results are confirmed in the experimental results. Experimental information about the high-frequency (several tens of kHz) pressure oscillation in the cut-out part is acquired in this study using a pressure-sensitive paint (PSP) responding to rapid change in pressure. The computational results reveal that a hairpin-like vortex is formed inside the cavity. The vortex works on the shear layer across the cavity to deflect it upward. The deflected shear layer shields the injectant from the primary flow, which causes the injectant to penetrate deep into the primary flow. The computational results also clarify that the expansion and compression waves produced in the rectangular part of the cavity are delivered effectively to the injector along the slope of the cut-out part, which is confirmed in the PSP measurement results. The delivered waves actuate the jet issuing from the injector to fluctuate up and down periodically with a large amplitude.

    DOI

  • Noise Reduction in PSP Images Using Mathematical Optimization Method

    Tomoki INOUE, Yu MATSUDA, Tsubasa IKAMI, Taku NONOMURA, Yasuhiro EGAMI, Hiroki NAGAI

    Journal of the Japan Society for Precision Engineering   87 ( 7 ) 7_610 - 7_613  2021.07

    DOI

  • Data-driven approach for noise reduction in pressure-sensitive paint data based on modal expansion and time-series data at optimally placed points

    Tomoki Inoue, Yu Matsuda, Tsubasa Ikami, Taku Nonomura, Yasuhiro Egami, Hiroki Nagai

    Physics of Fluids   33 ( 7 )  2021.07  [Refereed]

    Authorship:Lead author, Corresponding author

     View Summary

    We propose a noise reduction method for unsteady pressure-sensitive paint (PSP) data based on modal expansion, the coefficients of which are determined from time-series data at optimally placed points. In this study, the proper orthogonal decomposition (POD) mode calculated from the time-series PSP data is used as a modal basis. Based on the POD modes, the points that effectively represent the features of the pressure distribution are optimally placed by the sensor optimization technique. Then, the time-dependent coefficient vector of the POD modes is determined by minimizing the difference between the time-series pressure data and the reconstructed pressure at the optimal points. Here, the coefficient vector is assumed to be a sparse vector. The advantage of the proposed method is a self-contained method, while existing methods use other data, such as pressure tap data for the reduction of the noise. As a demonstration, we applied the proposed method to the PSP data measuring the Kármán vortex street behind a square cylinder. The reconstructed pressure data agreed very well with the pressures independently measured by pressure transducers. This modal-based approach will be applicable not only to PSP data but other types of experimental data.

    DOI

  • Single-molecule tracking measurement of PDMS layer during curing process

    Ryo Iwao, Hiroki Yamaguchi, Tomohide Niimi, Yu Matsuda

    Physica A: Statistical Mechanics and its Applications   565  2021.03  [Refereed]

    Authorship:Last author, Corresponding author

     View Summary

    The curing process of poly(dimethylsiloxane) (PDMS) was microscopically investigated by the single-molecule tracking method based on the diffusion motion of fluorescent dye molecules adding to the PDMS layer stored at a temperature of 308K. The PDMS layer was completely cured at 900 min after adding a curing agent. We compared the time- and ensemble-averaged mean square displacements (MSDs) of the tracked molecules at 90, 510, and 900 min after adding the curing agent into the PDMS layer. The discrepancies were observed between the time- and ensemble-averaged MSDs, indicating weak ergodicity breaking. The spatially averaged diffusion coefficient exhibited a two-step decrease: first step was rapid decrease suggesting the extent of crosslinking, and second step was slow one suggesting the increase of crosslink density. The single-molecule trajectory scale analysis revealed the heterogeneous distribution of the diffusion coefficient. By calculating the heat map from the slope of moment scaling spectrum (MSS) of each single-molecule trajectory, cluster structures were recognized. The spatial correlation of the slope of MSS decreased with the time elapsed. These results suggested the existence of the heterogeneous structure in the PDMS layer during the curing process.

    DOI

  • Ruthenium-based fast-responding pressure-sensitive paint for measuring small pressure fluctuation in low-speed flow field

    Y. Egami, Y. Hasegawa, Y. Matsuda, T. Ikami, H. Nagai

    Measurement Science and Technology   32 ( 2 )  2020.11  [Refereed]

     View Summary

    A sprayable fast-responding pressure-sensitive paint (fast-PSP) has been developed to measure time-resolved small pressure fluctuation on model surfaces. To realize PSP with fast response, high robustness, and high luminescence intensity, we have developed a novel ruthenium complex-based fast-PSP. The binder layers of the proposed fast-PSP were prepared by mixing room-temperature-vulcanizing silicone (silicone) and titanium dioxide (TiO2) particles with different sizes and their effects on the properties including the time response, pressure sensitivity, and luminescence intensity were investigated. The effects of the hydrophilic and hydrophobic surface treatments of TiO2 particle on the structure and mechanical robustness of the binder layer were also studied. The developed fast-PSP was applied to the flow field measurements behind a square cylinder and was evaluated. We have succeeded in obtaining time-series data of pressure fluctuation with high accuracy even at a mean velocity of 20 m s-1.

    DOI

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Books and Other Publications 【 display / non-display

  • マイクロ・ナノ熱工学の進展

    マイクロ・ナノ熱工学の進展編集委員会, 丸山, 茂夫, 稲田, 孝明, 塩見, 淳一郎, 染矢, 聡, 大宮司, 啓文, 高木, 周, 竹村, 文男, 千足, 昇平, 松田, 弘文, 宗像, 鉄雄, 山本, 淳, 内田, 健一, 小原, 拓, 嘉副, 裕, 丹下, 学, 花村, 克悟, 丸田, 薫, 山口, 康隆

    エヌ・ティー・エス  2021.05 ISBN: 9784860437220

  • Pressure-sensitive molecular film, Encyclopedia of Microfluidics and Nanofluidics, 2nd edition, Editor: Dongqing Li

    Y. Matsuda, H. Yamaguchi, T. Niimi( Part: Joint author)

    2015 ISBN: 9781461454885

Misc 【 display / non-display

  • Application of Low-Temperature Sensitive Fast Response PSP on Low-Speed Unsteady Flow and Its Validation

    江上泰広, 山崎遊野, 松田佑, 藤田昂志, 永井大樹

    東北大学流体科学研究所共同利用・共同研究拠点流体科学国際研究教育拠点活動報告書   2019 (CD-ROM)  2021

    J-GLOBAL

  • Microscale analysis of molecule behavior using single-molecule tracking

    安倍悠朔, 松田佑

    可視化情報シンポジウム(CD-ROM)   48th  2020

    J-GLOBAL

  • Noise Reduction Effect of Proper Orthogonal Decomposition and Dynamic Mode Decomposition for Unsteady PSP Measurements

    森重聡一郎, 山崎遊野, 松田佑, 松田佑, 伊神翼, 永井大樹, 江上泰広

    可視化情報シンポジウム(CD-ROM)   48th  2020

    J-GLOBAL

  • Investigation of Data Acquisition Conditions for Dynamic Mode Decomposition in Unsteady PSP Measurement

    伊神翼, 藤田昂志, 永井大樹, 松田佑, 松田佑, 山崎遊野, 江上泰広

    可視化情報シンポジウム(CD-ROM)   48th  2020

    J-GLOBAL

  • Development of High Luminescence PSP using Light-Emitting Electrochemical Cell Principle

    田中睦輝, 森竜雄, 松田佑, 松田佑, 米川文広, 坂上知, 多根静香, 江上泰広

    可視化情報シンポジウム(CD-ROM)   48th  2020

    J-GLOBAL

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Awards 【 display / non-display

  • 日本機械学会東海支部研究賞

    2018.03  

    Winner: 松田 佑

  • 可視化情報学会賞(奨励賞)

    2017.07  

    Winner: 松田 佑

  • 文部科学大臣表彰 若手科学者賞

    2017.04  

    Winner: 松田 佑

  • コニカミノルタ画像科学奨励賞

    2016.02  

    Winner: 松田佑

  • 日本機械学会賞(論文)

    2015.04  

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Research Projects 【 display / non-display

  • Development of PSP measurement system for detecting fien differential pressure on the surface of rotating blade

    Grant-in-Aid for Scientific Research (C)

    Project Year :

    2020.04
    -
    2023.03
     

  • データ同化を用いた単一分子計測法の高度化と階層性微細孔内での吸着・拡散挙動の解明

    基盤研究(B)

    Project Year :

    2019.04
    -
    2022.03
     

    松田 佑, 中垣 隆雄, 江上 泰広

  • マイクロ熱流動場における実在表面に対応した境界条件の研究

    基盤研究(C)

    Project Year :

    2018.04
    -
    2021.03
     

    山口 浩樹, 松田 佑

     View Summary

    マイクロ熱流動場ではクヌッセン数が大きくなるため,固体表面における境界条件が大きく影響する.しかし,実在の表面に対する境界条件を高精度に表現することは容易ではない.この境界条件とは分子の固体表面における散乱過程のことであり,代表的なパラメータとして分子の固体表面への平均的な適応割合を示す適応係数が知られており,熱輸送に関するエネルギー適応係数(EAC)や流動抵抗に関する接線方向運動量適応係数(TMAC)が実験的に計測されている.そこで,散乱過程に対する異なる統計平均量であるこれら二つの適応係数を同じ固体表面試料に対して比較解析することで,高クヌッセン数となるマイクロ熱流動場における実在表面に対する境界条件を提案することを目指す.
    本年度は,TMACに対する2つの計測システムとEACに対する計測システムの構築と検証を実施した.まずは,金属細線周りの外部流れを用いてTMACを計測する同心二重円管の計測システムでは,微細金属線を用いても流量変化が十分計測できることを確認した.一方で一部の実験結果が理論値と一致しないことから,実験装置の改良の必要性が明らかとなった.もう一方は,粘性真空計を参考にした平行円盤の回転を用いたTMACの計測システムであり,定量的にも既存の結果と矛盾しないことを確認した.更なる検証が今後求められる.EACの計測システムとしては大気圧に近い領域で計測可能な金属細線からの熱流束を計測するシステムの構築を行った.温度を一定にした状態での熱流束の計測からEACを導出できることを確認できたので,今後は高真空状態での計測が既存の知見と一致することを検証していく.
    また,実験結果と境界条件モデルに用いるパラメータセットとの関係を詳しく調査し,その関係性を明らかにした.

  • Development of high precision PSP method using structured illumination

    Grant-in-Aid for Challenging Research (Exploratory)

    Project Year :

    2018.06
    -
    2020.03
     

    Matsuda Yu

     View Summary

    The pressure-sensitive paint technique has been received much attention because PSP enable us to measure pressure distribution with high spatial resolution. In this study, we have developed a high precision PSP method using a structured illumination. We also develop an image alignment method using an AR marker. The applicability of this method was investigated. The skin-friction extraction method based on the PSP data was also investigated using the skin-friction field induced by a gaseous jet impingement.

  • Remarkable improvement of accuracy of unsteady global pressure measurement by high-luminescence LEC-PSP

    Grant-in-Aid for Scientific Research (C)

    Project Year :

    2017.04
    -
    2020.03
     

    EGAMI Yasuhiro

     View Summary

    Pressure-Sensitive Paint is a new technique to optically measure pressure distribution on a model surface with a CCD/CMOS camera. In this study, we have developed an electrically excited high-luminescence PSP based on the principle of luminescent electrochemical cells (LECs) to measure fast fluid phenomena with high accuracy in a very short exposure time of 1-100 µs. First, the preparation method of LECs using the pressure-sensitive dye PtTFPP was studied, and the preparation conditions including the preparation materials, their proportions and film thicknesses were found.
    The pressure sensitivity of the LEC-PSP was confirmed to be comparable to that of the conventional spray-coated PSP. The LEC-PSP showed 36 times higher intensity than the conventional one, which can significantly improve the signal-to-noise ratio of the acquired images and the associated measurement accuracy.

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Presentations 【 display / non-display

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Specific Research 【 display / non-display

  • 感圧塗料計測法の高精度化に関する研究

    2020  

     View Summary

    本研究では,感圧・感温塗料の高精度化を目指し,寿命法による計測システムの開発を実施した.寿命法を用いた感圧塗料計測手法では,励起光の照射を受けた際に感圧塗料の発するりん光の寿命が,雰囲気の圧力に応じて変化することを利用して,感圧塗料塗布面での圧力分布を計測する.感温塗料では発光寿命の温度依存性を利用する.寿命法では,感圧・感温塗料の光劣化などの影響を受けずに計測が実施できるために高精度な計測の実現が期待されている.本研究では,この寿命法計測システムの開発を行い,感圧・感温塗料の発光寿命の圧力・温度依存性などの基礎特性の調査を実施した.

  • 感温塗料による強制対流沸騰場の気泡・温度同時計測手法の開発

    2019  

     View Summary

    沸騰現象及びそれに伴う熱輸送現象に関する知識は,相変化を利用する熱機器の高効率化には極めて重要である.特に固気液三相界面位置(コンタクトライン)の時間的・空間的変化は伝熱面温度分布に対して支配的因子と考えられており,これらの間の関係を明らかにすることが強く求められている.従来研究では,赤外線(IR)カメラを用いた温度分布の計測が行われているが,IRカメラでの精密な計測には伝熱面上に不透明の赤外線感受性層が必要となるため,コンタクトライン位置が特定できず,コンタクトライン近傍での熱輸送計測という観点からは十分な研究が行われているとは言い難かった.そこで本研究では感温塗料計測法によって,沸騰流動場での時間分解固気液界面・温度場同時計測法の開発を行い,その有効性を示した.

  • 単一分子計測法によるPDMS硬化過程のミクロスケールアナリシスス

    2019  

     View Summary

    PDMSは高い生体適合性,高いガス透過性,高い鋳型への追随性,高い光学的透明性,低自家蛍光などの優れた特長を有し,広範な分野で利用されている.特に,マイクロ流体チップとして一般的に利用され,生化学分析,マイクロ流体力学分野をはじめとして重要な材料である.また,マイクロデバイスの小型集積化は非常に活発に研究されており,ナノインプリントをはじめとしてより小スケールのチップ作製法が注目されている.このような利用の観点から,PDMSのミクロスケールでの熱物性とくに硬化過程における空間均一性の評価と制御手法が重要となる.そこで本研究では,単一分子計測法(SMT)により,の硬化過程における経時変化を計測し,ミクロスケールでの熱物性変化の空間構造を調査した.具体的には,PDMSに極微量の蛍光分子を混入し,その熱運動を顕微鏡で計測し,熱運動の活発さ(拡散係数の大小分析)を解析することで空間構造を評価した.

  • インクジェット電気回路プリント技術を活用した紙流体チップの高機能化

    2018  

     View Summary

    紙流体チップによる分析技術がWhitesidesらによって2007年に提案されて以降,同分野の研究が盛んに行われている.紙流体チップは,ろ紙上に流路パターンを形成し,この流路上で生化学分析を可能としたデバイスであり,特に「紙」である点から,安価,軽量の上,毛細管現象による試料流体の輸送が可能なため,ポンプなどによる送液機構が不要であるという利点がある.一方で,紙であることから実現可能な機能に大きな制限がある.本研究では,電気回路を紙流体チップに埋め込むことで,従来の紙流体チップでは実現が困難であった化学分析を可能とした.また電気回路の利用を実現したことで,今後多様な機能の実現可能性があると期待できる.

 

Syllabus 【 display / non-display

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Committee Memberships 【 display / non-display

  • 2017
    -
    Now

    可視化情報学会  理事

  • 2015
    -
    Now

    文部科学省科学技術政策研究所科学技術動向研究センター  専門調査員

  • 2015
    -
    Now

    日本機械学会  流体工学部門 広報委員

  • 2014
    -
    2015

    可視化情報学会  学会誌編集委員会 幹事