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SEKI Yoko
Mechanical Science DivisionAssistant Professor
Department of Mechanical Engineering and System Design

Researcher information

■ Degree
  • Doctor of Engineering, Hiroshima University
    Mar. 2024
■ Field Of Study
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Thermal engineering
■ Career
  • Apr. 2024 - Present, Saitama University, Graduate School of Science and Engineering
■ Educational Background
  • Apr. 2021 - Mar. 2024, Hiroshima University
  • Apr. 2019 - Mar. 2021, Hiroshima University, Graduate School of Engineering
  • Apr. 2015 - Mar. 2019, Hiroshima University, Faculty of Engineering

Performance information

■ Paper
  • Observation of detonation initiation by a spherical projectile using the soap bubble filled with a combustible mixture               
    Ryoto Sato; Ken Suzuki; Shinichi Maeda; Yoko Seki; Tetsuro Obara
    Science and Technology of Energetic Materials, Volume:86, Number:5, First page:112, Last page:119, Nov. 2025, [Reviewed]
    English, Scientific journal
    DOI:https://doi.org/10.34571/stem.86.5_112
    DOI ID:10.34571/stem.86.5_112
  • The cellular structure of an unstable gaseous detonation affected by a small obstacle on the sidewall               
    Yoko Seki; Wookyung Kim; Tomoyuki Johzaki; Takuma Endo
    Journal of Thermal Science and Technology, Volume:20, Number:2, First page:24-00479, Jul. 2025, [Reviewed], [Lead, Corresponding]
    English, Scientific journal
    DOI:https://doi.org/10.1299/jtst.24-00479
    DOI ID:10.1299/jtst.24-00479
  • Influences of a small obstacle on the sidewall upon a detonation cellular structure               
    Yoko Seki; Wookyung Kim; Tomoyuki Johzaki; Takuma Endo
    Journal of Thermal Science and Technology, Volume:18, Number:1, First page:23-00038, May 2023, [Reviewed], [Lead]
    Japan Society of Mechanical Engineers, Scientific journal
    DOI:https://doi.org/10.1299/jtst.23-00038
    DOI ID:10.1299/jtst.23-00038, ISSN:1880-5566, eISSN:1880-5566, J-Global ID:202302279994410000
  • Promotion of deflagration-to-detonation transition by repeated obstacle rods               
    Yoko Seki; Ryuji Kobayashi; Wookyung Kim; Tomoyuki Johzaki; Takuma Endo
    Journal of Thermal Science and Technology, Volume:16, Number:2, First page:JTST0018, Jan. 2021, [Reviewed], [Lead]
    Japan Society of Mechanical Engineers, Scientific journal
    DOI:https://doi.org/10.1299/jtst.2021jtst0018
    DOI ID:10.1299/jtst.2021jtst0018, ISSN:1880-5566, eISSN:1880-5566, J-Global ID:202102239181731034
  • Detonation propagation from a cylindrical tube into a diverging cone               
    Takuma Endo; Ryuji Kobayashi; Shimon Kuwajima; Yoko Seki; Wookyung Kim; Tomoyuki Johzaki
    Journal of Thermal Science and Technology, Volume:15, Number:3, First page:JTST0030, Sep. 2020, [Reviewed]
    Japan Society of Mechanical Engineers, Scientific journal
    DOI:https://doi.org/10.1299/jtst.2020jtst0030
    DOI ID:10.1299/jtst.2020jtst0030, ISSN:1880-5566, eISSN:1880-5566, J-Global ID:202002249605652469
■ Lectures, oral presentations, etc.
  • 水素・空気を用いた小型の単円筒型燃焼器における振動燃焼の観測               
    高橋 楓太; 田中 理人; 西村 聡真; 福田 愛美; 前田 慎市; 関 陽子; 小原 哲郎
    Jun. 2026
    Jun. 2026 - Jun. 2026, Japanese, Oral presentation
  • Visualization of detonation wave propagation in two-phase ethanol-oxygen jets using a colliding-jet injector               
    Soma Nishimura; Manami Fukuda; Futa Takahashi; Masato Tanaka; Shinichi Maeda; Yoko Seki; Tetsuro Obara; Hideyuki Tanno; Shuto Yatsuyanagi
    International Workshop On Detonation For Propulsion 2026 (IWDP2026), May 2026
    May 2026 - May 2026, English, Poster presentation
  • 衝突型インジェクタを用いた液体エタノー ル・ガス酸素噴流中へ入射したデトネーショ ン波の可視化観測               
    西村 聡真; 福田 愛美; 高橋 楓太; 田中 理人; 前田 慎市; 関 陽子; 小原 哲郎; 丹野 英幸; 八柳 秀門
    Mar. 2026
    Mar. 2026 - Mar. 2026, Japanese, Oral presentation
  • 水素酸素予混合気における解適合格子を用いた衝撃波と火炎の干渉によるDDT過程に関する数値解析               
    笠 友介; 坪井 伸幸; 小澤 晃平; 林 光一; 小原 哲郎; 関 陽子; Tang XinMeng
    Nov. 2025
    Nov. 2025 - Nov. 2025, Japanese, Oral presentation
  • Experimental/numerical exploration of deflagration-to-detonation transition in unconfined/semi-confined media               
    Kazuya Iwata; Sho Wada; Ryoichi Kurose; Hiro Arakaki; Yoko Seki; Shinichi Maeda; Tetsuro Obara
    30th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS2025), Jul. 2025
    Jul. 2025 - Aug. 2025, English, Poster presentation
  • Observation of detonation initiation by a high-speed spherical projectile using the diaphragmless method               
    Shinichi Maeda; Ryoto Sato; Ken Suzuki; Yoko Seki; Tetsuro Obara
    30th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS2025), Jul. 2025
    Jul. 2025 - Aug. 2025, English, Oral presentation
  • 空気吸込式・姿勢制御用パルスデトネーションスラスタの実現に向けた推力計測実験               
    青井 瑞樹; 久保 友輝; 池田 北斗; 前田 慎市; 関 陽子; 小原 哲郎
    Jul. 2025
    Jul. 2025 - Jul. 2025, Japanese, Oral presentation
  • 開放系および半開放系における水素-酸素火炎の加速とDDTの可能性               
    岩田 和也; 稲垣 直哉; 新垣 裕大; 渡邉 光毅; 関 陽子; 前田 慎市; 小原 哲郎
    Mar. 2025
    Mar. 2025 - Mar. 2025, Japanese, Oral presentation
  • Linear detonation channel実験装置を用いた回転デトネーションロケットエンジン内部現象の可視化観測               
    西村 聡真; 碇 健汰; 前田 慎市; 関 陽子; 小原 哲郎; 丹野 英幸
    Mar. 2025
    Mar. 2025 - Mar. 2025, Japanese, Oral presentation
  • 回転デトネーションエンジン内部現象の可視化観測を目的としたLinear detonation channel実験装置の構築               
    前田 慎市; 西村 聡真; 碇 健太; 関 陽子; 小原 哲郎; 丹野 英幸
    Jan. 2025
    Japanese, Oral presentation
  • 管軸近傍における小さな障害物が誘起するデトネーション再起爆               
    関 陽子; Muhammad Ilham Bin Mohd Fauzi; 前田 慎市; 小原 哲郎
    Nov. 2024
    Nov. 2024 - Nov. 2024, Japanese, Oral presentation
  • 不燃性気体の噴射によるデトネーション・アレスターの試作および性能               
    高橋 哲也; 坂口 達磨; 宮一 栄斗; 関 陽子; 前田 慎市; 小原 哲郎
    Nov. 2024
    Nov. 2024 - Nov. 2024, Japanese, Poster presentation
  • ブロッケージ⽐が⼩さい障害物 の形状がデフラグレーション・デト ネーション遷移現象に与える影響               
    渡邉 光毅; 新垣 裕大; 稲垣 直哉; 前田 慎市; 関 陽子; 小原 哲郎
    Nov. 2024
    Nov. 2024 - Nov. 2024, Japanese, Oral presentation
  • Deflagration-to-detonation transition process caused by interaction between shock wave and flame               
    Genta Matsumoto, Mitsuru Iwashita, Yoko Seki, Shinichi Maeda, Tetsuro Obara, Yusuke Ryu, and Nobuyuki Tsuboi
    The 8th International Symposium on Energetic Materials and their Applications (ISEM2024), Nov. 2024
    Nov. 2024 - Nov. 2024, English, Oral presentation
  • 多数のオリフィスが設置された円管内におけるデトネーション再起爆               
    関 陽子; 北 正利; 金 佑勁; 城﨑 知至; 遠藤 琢磨
    Mar. 2024
    Mar. 2024 - Mar. 2024, Japanese, Oral presentation
  • 連続する側壁上の障害物がデトネーション波の伝播速度に与える影響               
    関 陽子; 金 佑勁; 城﨑 知至; 遠藤 琢磨
    Jul. 2023
    Jul. 2023 - Jul. 2023, Japanese, Oral presentation
  • 側壁上の擾乱が生み出すデトネーション波の乱れ               
    関 陽子; 本田 朝暉; 金 佑勁; 城﨑 知至; 遠藤 琢磨
    Jun. 2022
    Jun. 2022 - Jul. 2022, Japanese, Oral presentation
  • Influences of a small step on the side wall on detonation propagation               
    Yoko Seki; Tomoaki Honda; Wookyung Kim; Tomoyuki Johzaki; Takuma Endo
    28th International Colloquium on the Dynamics of Explosions and Reactive Systems (ICDERS2022), Jun. 2022
    Jun. 2022 - Jun. 2022, English, Oral presentation
  • 側壁上の小さい擾乱がデトネーション波のセル構造に与える影響               
    関 陽子; 本田 朝暉; 金 佑勁; 城﨑 知至; 遠藤 琢磨
    Mar. 2022
    Mar. 2022 - Mar. 2022, Japanese, Oral presentation
  • 障害棒を用いたデフラグレーション・デトネーション遷移の促進               
    関 陽子; 井本 弘平; 小林 隆慈; 金 佑勁; 城﨑 知至; 遠藤 琢磨
    Jul. 2019
    Jul. 2019 - Jul. 2019, Japanese, Oral presentation
■ Teaching experience
  • Apr. 2024 - Present
    工学入門セミナー
  • Apr. 2024 - Present
    機械工学実験Ⅱ
  • Apr. 2024 - Present
    機械工学実験Ⅰ
■ Thesis Guidance
  • 2025
  • 2025
  • 2024
■ Affiliated academic society
  • Apr. 2024 - Present
  • Apr. 2023 - Present
  • Apr. 2019 - Present
  • Apr. 2019 - Present
■ Research projects
  • 空気吸込式・姿勢制御用スラスタを実現するバルブレス機構付パルスデトネーション技術               
    Apr. 2025 - Mar. 2028
    Coinvestigator
    Grant amount(Total):4550000, Direct funding:3500000, Indirect funding:1050000
    Grant number:25K08119
  • 管端気体の自着火による衝撃波を活用した新しいデトネーション起爆手法の確立               
    Apr. 2025 - Mar. 2027
    Principal investigator
    Grant amount(Total):4810000, Direct funding:3700000, Indirect funding:1110000
    Grant number:25K17549
■ Academic contribution activities
  • Journal of Loss Prevention in the Process Industries               
    Peer review
    Apr. 2026
■ Social Contribution Activities
  • 最も激しい爆発の際の燃焼               
    contribution
    23 Oct. 2024
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