• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Dynamic characteristics and active control of turbomachinery using dynamic mode decomposition and proper fluctuation excitement

Research Project

Project/Area Number 19K04188
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 19010:Fluid engineering-related
Research InstitutionSaitama University

Principal Investigator

Kang Donghyuk  埼玉大学, 理工学研究科, 准教授 (40610366)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Discontinued (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords非定常流量 / 動的モード分解 / 特異値分解 / 流れ場の推定 / デジタルツウィン / 非定常流量計 / ターボ機械の動特性 / ターボ機械 / 動特性 / POD / DMD / IFFT / 変動流系 / 変動流量計
Outline of Research at the Start

ターボ機械の内部流れのアクティブ制御を試みる.まずは,申請者が独自で導いた変動流量の理論式によって,高精度の変動流量計を開発する.続いて,加振時の流れ場に対して動的モード分解を用い,流れ場と動特性との関係性を明確にする.さらに,動的モード分解を用いて流体不安定を発生させる流れの状況を特定する.その後,アクチュエータによって,不安定を発生させる流れの構造を崩壊させ(=最適変動励起法),不安定流れの抑制を図る.

Outline of Final Research Achievements

We proposed a Venturi-type unsteady flowmeter. The proposal was supported by theoretical analysis, numerical simulations, and experimental verification. This achievement enabled the investigation of the dynamic characteristics of turbo machinery through experiments. Additionally, we measured the dynamic characteristics of a turbofan experimentally and numerically, revealing that the slope of the performance curve during unsteady operation is larger than that during quasi-steady operation.
We also developed a real-time estimation technique for the internal flow field of turbo machinery under quasi-steady conditions. By focusing on the mode decomposition and reconstruction technique of images using singular value decomposition, we devised a mode decomposition and reconstruction technique for flow fields. It was found that the predicted flow field based solely on measurement data closely matched the results obtained from computational fluid dynamics (CFD) simulations.

Academic Significance and Societal Importance of the Research Achievements

非定常ベルヌーイ式を用いて、変動流量装置の開発した。本開発によって変動時の流れの様子を明らかにすることができる。さらに、特異値分解、動的モード分解という手法や時空間FFT・IFFTを用いることによって、ある特定な流れ場の成分を抽出することができた。これによって、複雑流動現象を明らかにすることができた。特に、特異値分解を用いて、ターボ機械のデジタルツウィンができることを示した。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (22 results)

All 2022 2021 2020 2019 Other

All Journal Article (8 results) (of which Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (12 results) (of which Int'l Joint Research: 6 results) Remarks (2 results)

  • [Journal Article] Theoretical, Numerical, and Experimental Study on an Unsteady Venturi Flowmeter for Incompressible Flows2021

    • Author(s)
      Izuru Kambayashi , Donghyuk Kang , Naoki Nishimura
    • Journal Title

      Journal of Fluids Engineering

      Volume: 143 Issue: 2 Pages: 021308-021321

    • DOI

      10.1115/1.4048689

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Flow Characteristics in a V-shaped Region of a Suction Performance Curve in a Double-suction Centrifugal Pump2019

    • Author(s)
      Donghyuk Kang, Satoshi Yamazaki, Shusaku Kagawa, Byungjin An, Motohiko Nohmi and Kazuhiko Yokota
    • Journal Title

      International Journal of Fluid Machinery and Systems

      Volume: 12 Issue: 1 Pages: 89-98

    • DOI

      10.5293/IJFMS.2019.12.1.089

    • NAID

      130007616389

    • ISSN
      1882-9554
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Time Resolved PIV Analysis for Low Frequency Noise Generated at Low Flow Rate Mode of Multi-Blade Centrifugal Fan2019

    • Author(s)
      川埼真俊,平原裕行,箭内優樹,姜東赫
    • Journal Title

      Turbomachinery

      Volume: 47 Issue: 4 Pages: 208-218

    • DOI

      10.11458/tsj.47.4_208

    • NAID

      130007724316

    • ISSN
      0385-8839, 1880-2338
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental and Numerical Evaluations of Helical Turbine Performance and Proposal for Theoretical Model2019

    • Author(s)
      堤 寛征,姜 東赫, 平原 裕行
    • Journal Title

      Turbomachinery

      Volume: 47 Issue: 6 Pages: 342-353

    • DOI

      10.11458/tsj.47.6_342

    • NAID

      130007724351

    • ISSN
      0385-8839, 1880-2338
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental Investigation of Fluid Mixing Process with Newly Designed Conduit-Type Mixer and Fin- Type Mixer,Journal of Flow Control2019

    • Author(s)
      Md. Tauhedul Azam, Donghyuk Kang, Hiroyuki Hirahara, Kazuhisa Murata, Yasufumi Shimoji
    • Journal Title

      Measurement & Visualization

      Volume: 7 Issue: 02 Pages: 101-110

    • DOI

      10.4236/jfcmv.2019.72008

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three-Dimensional Theoretical Study on Flow Characteristics of a Spiral-Channel Viscous Micropump2019

    • Author(s)
      2.Donghyuk Kang, Koichi Nishibe, Kotaro Sato and Kazuhiko Yokota
    • Journal Title

      International Journal of Fluid Machinery and Systems

      Volume: 12 Issue: 2 Pages: 169-180

    • DOI

      10.5293/IJFMS.2019.12.2.169

    • NAID

      130007668915

    • ISSN
      1882-9554
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhancement of rotating jet by spirally structured vortex tube in centrifugal bladeless mixer flow2019

    • Author(s)
      Md.Tauhedul Azam, Donghyuk Kang, Hiroyuki Hirahara, Kazuhisa Murata and Yasufumi Shimotsukasa
    • Journal Title

      Journal of Fluid Science and Technology

      Volume: 14 Issue: 2 Pages: JFST0010-JFST0010

    • DOI

      10.1299/jfst.2019jfst0010

    • NAID

      130007732306

    • ISSN
      1880-5558
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Thermodynamic Effect of Tip-Leakage-Vortex Cavitation on  Two-dimensional Hydrofoils with Tip Clearance for Hot Water2019

    • Author(s)
      Donghyuk Kang,Daichi Nakai and Yuka Iga
    • Journal Title

      International Journal of Fluid Machinery and Systems

      Volume: 12 Issue: 4 Pages: 368-379

    • DOI

      10.5293/IJFMS.2019.12.4.368

    • NAID

      130007772830

    • ISSN
      1882-9554
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 流量変動時の遠心ファンの伝達関数に関す る実験的・数値的研究2022

    • Author(s)
      竇程燁,上林出,姜東赫
    • Organizer
      ターボ機械協会第86会講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 機械学習を用いた流体機械内部流れ場の推 定手法の検証2022

    • Author(s)
      上林出,姜東赫
    • Organizer
      ターボ機械協会第86会講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Estimation of Internal Flow in Turbomachinery Using Machine Learnin2021

    • Author(s)
      Izuru Kambayashi,Donghyuk Kang
    • Organizer
      16th Asian International Conference on Fluid Machinery
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamic Response of a Centrifugal Fan to Flow Rate Oscillations2021

    • Author(s)
      Chengye Dou,Donghyuk Kang
    • Organizer
      16th Asian International Conference on Fluid Machinery
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 機械学習によるターボ機械内部流れ場の推定2021

    • Author(s)
      上林出,姜東赫
    • Organizer
      ターボ機械協会第85回総会講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ターボ機械の動特性測定システムの開発2021

    • Author(s)
      竇程燁,上林出,姜東赫
    • Organizer
      ターボ機械協会第85回総会講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 非定常運動方程式を用いたベンチュリ式流量計の評価2020

    • Author(s)
      上林出、姜東赫、平原裕行
    • Organizer
      83回ターボ機械総会
    • Related Report
      2020 Research-status Report
  • [Presentation] 非定常運動方程式を用いたベン チュリ式の流量計の提案2019

    • Author(s)
      西村尚樹、姜東赫、平原裕行
    • Organizer
      ターボ機械協会(岡山)講演会&見学会
    • Related Report
      2019 Research-status Report
  • [Presentation] Experimental, Numerical and Analytical Evaluation of a HelicalTurbine Performance2019

    • Author(s)
      Donghyuk Kang, Hiromasa Tsutsumi and Hiroyuki Hirahara
    • Organizer
      ASME - JSME - KSME Joint Fluids Engineering Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Experimental Investigation of Fluid Mixing Process with Newly Designed Conduit-Type Mixer and Fin- Type Mixer2019

    • Author(s)
      Wakana Tsuru, Hiroki Shimura , Donghyuk Kang, Kotaro Sato and Kazuhiko Yokota
    • Organizer
      Proceedings of the 13th Asian International Conference on Fluid Machinery
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Experimental and Numerical Studies of Unsteady Cavitation in a Centrifugal Pump for Visualization2019

    • Author(s)
      Pin Hu, Junnosuke Okajima, Donghyuk Kang, Motohiko Nohmi and Yuka Iga
    • Organizer
      Proceedings of the 13th Asian International Conference on Fluid Machinery
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Experimental Performance of a Viscosity Micropump using Flagellar Motion2019

    • Author(s)
      Myu Inagaki, Donghyuk Kang and Hiroyuki Hirahara
    • Organizer
      The 16th International Conference on Flow Dynamics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Remarks] 機械学習によるターボ機械の内部流れの再構築

    • URL

      http://park.saitama-u.ac.jp/~fdl/research.html

    • Related Report
      2021 Annual Research Report
  • [Remarks] ターボ機械の動特性に関する研究

    • URL

      http://park.saitama-u.ac.jp/~fdl/research.html

    • Related Report
      2021 Annual Research Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi