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Study of thermofluid phenomena in phase change materials using simultaneous visualization of temperature, velocity, and heat transfer coefficient

Research Project

Project/Area Number 20K14658
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 19020:Thermal engineering-related
Research InstitutionHirosaki University

Principal Investigator

Okabe Takahiro  弘前大学, 理工学研究科, 准教授 (70772713)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords相変化材料 / 赤外線サーモグラフィ / 2色レーザー誘起蛍光法 / 粒子画像流速測定法 / レイリーベナール対流 / 可視化計測
Outline of Research at the Start

相変化材料の融解過程で生じるレイリーベナール対流の熱流動現象の詳細な理解のために,液相内温度場・速度場と加熱面熱伝達率分布の同時可視化計測システムを開発する.開発した装置を用いてステファン数や容器形状を変化させた際の相変化材料内熱流動現象の可視化実験を実施する.本研究で得られた可視化計測データをレイリー数,縦横比,ステファン数等で整理し,最適な熱設計の指針となるデータベースの構築とモデル化を行う.本研究は潜熱蓄熱システムの熱設計の指針や数値計算コードの検証に有用であり,熱流体工学や計算力学分野,産業界に至るまでその波及効果は大きい.

Outline of Final Research Achievements

In this study, we investigated a natural convection on melting process of phase change materials using a simultaneous visualization of temperature, velocity, and heat transfer coefficient. We clarified that the heat transfer mechanism varies continuously based on melting stages of the phase change material, and it is considerably affected by the variations in the Stefan number and inclination angle. In addition, we obtained the scaling law of the Nusselt number and the Rayleigh number for each condition and found to be different values of the Nusselt number depending on the tested conditions.These variations were attributed to the changes in the number of ascending and descending plumes, solid-liquid interface, convection structure, and supply of cold fluid at each melting stage. Our experimental results can be used to enhance the understanding of the relevant phenomena and validate numerical simulations related to the melting of phase change materials.

Academic Significance and Societal Importance of the Research Achievements

相変化材料の融解過程で生じるレイリーベナール対流の熱流動現象の理解は,近年注目を集める潜熱蓄熱システムの最適な熱設計に必要不可欠である.本研究で開発した温度・速度・加熱面熱伝達率の時空間同時計測手法は,既存技術では難しかった複雑な当該熱流動現象の詳細な評価を可能とし,最適熱設計に有用な多くの新たな学術的知見を提供した.さらに,本研究で得た同時可視化データは相変化材料の融解に関連する数値シミュレーションコードのベンチマークに有用である.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (38 results)

All 2023 2022 2021 2020

All Journal Article (19 results) (of which Peer Reviewed: 10 results,  Open Access: 4 results) Presentation (19 results) (of which Int'l Joint Research: 12 results)

  • [Journal Article] Contact line instability induced by thermal effects during drop impact on heated surfaces2023

    • Author(s)
      OKABE Takahiro、SHIRAI Keitaro、OKAWA Takumi、OKAJIMA Junnosuke、SHIROTA Minori
    • Journal Title

      Proceedings of 11th International Conference on Multiphase Flow

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Measurement and prediction of layered solidification patterns formed on impact surface of molten metal drops2023

    • Author(s)
      NAKAGAWA Yusuke, MAEDA Kazuaki, OKAWA Takumi, OKABE Takahiro, SHIROTA Minori
    • Journal Title

      JAPANESE JOURNAL OF MULTIPHASE FLOW

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 水平対流における温度場と速度場の過渡的挙動の同時可視化2023

    • Author(s)
      安藤杏将,西山幸輝,山田翔英,古川琢磨,岡部孝裕
    • Journal Title

      日本機械学会東北支部第53回学生員卒業研究発表講演会講演論文集

      Volume: -

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Climbing mechanism of self-propelled drops on a ratchet with hybrid wettability in the low-temperature regime2023

    • Author(s)
      SHIROTA Minori, SHIRAHAMA Tomomichi, ATO Ryota, OKABE Takahiro
    • Journal Title

      Proceedings of 11th International Conference on Multiphase Flow

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Solidification pattern formed by thermal conduction of molten metal drops spreading on a substrate2023

    • Author(s)
      OKAWA Takumi, NAKAGAWA Yusuke, MAEDA Kazuaki, OKABE Takahiro, SHIROTA Minori
    • Journal Title

      Proceedings of 11th International Conference on Multiphase Flow

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Visualization and Measurement of Pore Formation with Solidification on Impaction Interface of Molten Metal Drops2022

    • Author(s)
      SHIROTA Minori、KIDACHI Haruka、OKAWA Takumi、NAKAGAWA Yusuke、MAEDA Kazuaki、OKABE Takahiro、FUKUDA Yasuyuki
    • Journal Title

      JAPANESE JOURNAL OF MULTIPHASE FLOW

      Volume: 36 Issue: 2 Pages: 220-228

    • DOI

      10.3811/jjmf.2022.017

    • ISSN
      0914-2843, 1881-5790
    • Year and Date
      2022-04-27
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Quantitative Evaluation of Surface Wettability Effect on Drop Propulsion on Heated Surfaces2022

    • Author(s)
      白濱 智礼, 成田 海斗, 岡部 孝裕, 城田 農
    • Journal Title

      JAPANESE JOURNAL OF MULTIPHASE FLOW

      Volume: 36 Issue: 2 Pages: 212-219

    • DOI

      10.3811/jjmf.2022.016

    • ISSN
      0914-2843, 1881-5790
    • Year and Date
      2022-04-22
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 平面に衝突する液滴の相変化を伴う熱伝達現象の可視化計測2022

    • Author(s)
      岡部孝裕
    • Journal Title

      化学工学

      Volume: 86 Pages: 288-288

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Phase diagram for the spreading behavior of water drops impacting hot walls observed via high-speed IR imaging2022

    • Author(s)
      OKABE Takahiro、SHIRAI Keitaro、OKAWA Takumi、OKAJIMA Junnosuke、SHIROTA Minori
    • Journal Title

      Journal of Fluid Science and Technology

      Volume: 17 Issue: 3 Pages: JFST0009-JFST0009

    • DOI

      10.1299/jfst.2022jfst0009

    • ISSN
      1880-5558
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 移動界面を有する自然対流現象の熱と流れの同時可視化計測2022

    • Author(s)
      西山幸輝,宮川泰明,城田農,岡部孝裕
    • Journal Title

      第59回日本伝熱シンポジウム講演論文集

      Volume: -

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Study of Hydrothermal Behaviors of Impinging Droplets on a Heated Wall2022

    • Author(s)
      OKABE Takahiro、TAGUCHI Kazuma、OKAJIMA Junnosuke、SHIROTA Minori
    • Journal Title

      22nd International Symposium on Advanced Fluid Information

      Volume: -

    • Related Report
      2022 Annual Research Report
  • [Journal Article] 加熱基板に置かれた液滴の固液界面熱流束の可視化計測2022

    • Author(s)
      田口和真,宮川泰明,城田農,岡部孝裕
    • Journal Title

      第22回日本伝熱学会東北支部学生発表会講演論文集

      Volume: -

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Time-dependent heat flux around contact line of evaporating drops on hydrophobic surfaces2022

    • Author(s)
      TAGUCHI Kazuma, MIYAGAWA Taimei, SHIROTA Minori, OKABE Takahiro
    • Journal Title

      Proceedings of 19th International Conference on Flow Dynamics

      Volume: -

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Spatio-temporal measurement of natural convective heat transfer on melting process using infrared thermography2021

    • Author(s)
      Okabe Takahiro、Miyanishi Takuro、Miyagawa Taimei、Murata Hiroyuki
    • Journal Title

      International Journal of Heat and Mass Transfer

      Volume: 181 Pages: 121882-121882

    • DOI

      10.1016/j.ijheatmasstransfer.2021.121882

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effects of heating conditions on natural convective heat transfer with melting boundary in a rectangular cavity heated from below2021

    • Author(s)
      Takahiro Okabe, Taimei Miyagawa, Hiroyuki Murata
    • Journal Title

      Proceedings of 2nd Asian Conference on Thermal Sciences

      Volume: USB予稿集

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of simultaneous visualization technique for temperature, velocity, and heat transfer coefficient and its application to natural convective flow2021

    • Author(s)
      Kohki Nishiyama, Takahiro Okabe, Taimei Miyagawa, Hiroyuki Murata
    • Journal Title

      Proceedings of 2nd Asian Conference on Thermal Sciences

      Volume: USB予稿集

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] High Spatial-Resolution Measurement of Unsteady Natural Convection in a Tilted Rectangular Enclosure2021

    • Author(s)
      K. Nishiyama, T. Okabe, T. Miyagawa, M. Shirota
    • Journal Title

      Proceedings of 18th International Conference on Flow Dynamics

      Volume: USB予稿集

    • Related Report
      2021 Research-status Report
  • [Journal Article] Study of Hydrothermal Behaviors of Impinging Droplets on a Heated Wall2021

    • Author(s)
      T. Okabe, K. Nishiyama, J. Okajima, M. Shirota
    • Journal Title

      Proceedings of 21st International Symposium on Advanced Fluid Information

      Volume: USB予稿集

    • Related Report
      2021 Research-status Report
  • [Journal Article] 加熱壁面に衝突する液滴のリム不安定性が固液界面熱伝達現象に及ぼす影響2021

    • Author(s)
      岡部孝裕, 岡島淳之介, 城田農
    • Journal Title

      第58回日本伝熱シンポジウム講演論文集

      Volume: USB予稿集

    • Related Report
      2021 Research-status Report
  • [Presentation] 水平対流における温度場と速度場の過渡的挙動の同時可視化2023

    • Author(s)
      安藤杏将,西山幸輝,山田翔英,古川琢磨,岡部孝裕
    • Organizer
      日本機械学会東北支部第53回学生員卒業研究発表講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Contact line instability induced by thermal effects during drop impact on heated surfaces2023

    • Author(s)
      OKABE Takahiro、SHIRAI Keitaro、OKAWA Takumi、OKAJIMA Junnosuke、SHIROTA Minori
    • Organizer
      11th International Conference on Multiphase Flow
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Solidification pattern formed by thermal conduction of molten metal drops spreading on a substrate2023

    • Author(s)
      OKAWA Takumi, NAKAGAWA Yusuke, MAEDA Kazuaki, OKABE Takahiro, SHIROTA Minori
    • Organizer
      11th International Conference on Multiphase Flow
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Climbing mechanism of self-propelled drops on a ratchet with hybrid wettability in the low-temperature regime2023

    • Author(s)
      SHIROTA Minori, SHIRAHAMA Tomomichi, ATO Ryota, OKABE Takahiro
    • Organizer
      11th International Conference on Multiphase Flow
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Time-dependent heat flux around contact line of evaporating drops on hydrophobic surfaces2022

    • Author(s)
      TAGUCHI Kazuma, MIYAGAWA Taimei, SHIROTA Minori, OKABE Takahiro
    • Organizer
      19th International Conference on Flow Dynamics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 加熱基板に置かれた液滴の固液界面熱流束の可視化計測2022

    • Author(s)
      田口和真,宮川泰明,城田農,岡部孝裕
    • Organizer
      第22回日本伝熱学会東北支部学生発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Study of Hydrothermal Behaviors of Impinging Droplets on a Heated Wall2022

    • Author(s)
      OKABE Takahiro、TAGUCHI Kazuma、OKAJIMA Junnosuke、SHIROTA Minori
    • Organizer
      22nd International Symposium on Advanced Fluid Information
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 移動界面を有する自然対流現象の熱と流れの同時可視化計測2022

    • Author(s)
      西山幸輝,宮川泰明,城田農,岡部孝裕
    • Organizer
      第59回日本伝熱シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] High Spatial-Resolution Measurement of Unsteady Natural Convection in a Tilted Rectangular Enclosure2021

    • Author(s)
      K. Nishiyama, T. Okabe, T. Miyagawa, M. Shirota
    • Organizer
      18th International Conference on Flow Dynamics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of simultaneous visualization technique for temperature, velocity, and heat transfer coefficient and its application to natural convective flow2021

    • Author(s)
      K. Nishiyama, T. Okabe, T. Miyagawa, H. Murata
    • Organizer
      Proceedings of 2nd Asian Conference on Thermal Sciences
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effects of heating conditions on natural convective heat transfer2021

    • Author(s)
      T. Okabe, T. Miyagawa, H. Murata
    • Organizer
      Proceedings of 2nd Asian Conference on Thermal Sciences
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Study of Hydrothermal Behaviors of Impinging Droplets on a Heated Wall2021

    • Author(s)
      T. Okabe, K. Nishiyama, J. Okajima, M. Shirota
    • Organizer
      21st International Symposium on Advanced Fluid Information
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] VISUALIZATION OF NATURAL CONVECTIVE HEAT TRANSFER WITH MELTING BOUNDARY USING INFRARED THERMOGRAPHY2021

    • Author(s)
      岡部孝裕
    • Organizer
      第10回4校学術交流会
    • Related Report
      2021 Research-status Report
  • [Presentation] 加熱壁面に衝突する液滴のリム不安定性が固液界面熱伝達現象に及ぼす影響2021

    • Author(s)
      岡部孝裕, 岡島淳之介, 城田農
    • Organizer
      第58回日本伝熱シンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 下面より加熱されたn-octadecaneの融解過程で生じる自然対流熱伝達の時空間特性に関する実験的研究2020

    • Author(s)
      岡部孝裕,宮西卓朗,宮川泰明
    • Organizer
      第57回日本伝熱シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Visualization measurement of transient heat transfer characteristics of Rayleigh-Benard convection using infrared thermography2020

    • Author(s)
      Koki Nishiyama, Takahiro Okabe, Taimei Miyagawa, Hiroyuki Murata
    • Organizer
      17th International Conference on Flow Dynamics
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Measurement of heat transfer of a sphere moving on the inclined wall using high-speed IR thermography2020

    • Author(s)
      Taimei Miyagawa, Takahiro Okabe, Hiroyuki Murata
    • Organizer
      17th International Conference on Flow Dynamics
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 傾斜容器内相変化材料の融解における加熱面熱伝達特性の時空間計測2020

    • Author(s)
      岡部孝裕,宮西卓朗,宮川泰明
    • Organizer
      第41回日本熱物性シンポジウム
    • Related Report
      2020 Research-status Report
  • [Presentation] Study of hydrothermal behaviors of impinging droplets on a heated wall2020

    • Author(s)
      Takahiro Okabe, Yuka Akiyama, Junnosuke Okajima, Minori Shirota
    • Organizer
      20th International Symposium on Advanced Fluid Information
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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