• 研究課題をさがす
  • 研究者をさがす
  • KAKENの使い方
  1. 課題ページに戻る

2021 年度 実績報告書

AIとCFDの融合による革新的な流体計測技術の創出

研究課題

研究課題/領域番号 20J10276
研究機関東北大学

研究代表者

ティワリ ニトゥ  東北大学, 工学研究科, 特別研究員(PD)

研究期間 (年度) 2020-04-24 – 2022-03-31
キーワードPressure estimation / Shear-thinning fluid / Pressure sensitive paint / Sensor selection method / Flow over cylinder / UVP / PIV / Data driven method
研究実績の概要

The overall goal of my project was to improve the experimental tools using data driven methods which I achieved successfully. The project had two parts: first part was to develop technology for pressure field measurement in fluid flows which was not possible by traditional techniques. This part of the project specifically focused on pressure field estimation in opaque Newtonian and non-Newtonian fluids based on UVP (Ultrasonic velocity profiler) and PIV (Particle image velocimetry) measurements. Three novel techniques were developed for milk and shear-thinning fluid flows behind the circular cylinder. Some of the research outcomes have been published as two articles in international journals in “Experiments in Fluids” and “Flow Measurements and Instrumentation” by reputed publishers Springer and Elsevier. The second part of the project was dedicated to the improvement of the temporal resolution of available high-speed cameras for time-resolved measurements and simultaneous measurement of pressure and temperature on same surface by sensitive paints. Data-driven techniques such as proper orthogonal decomposition and sensor selection method have been utilized for time-resolved measurement in supersonic jet flows. A novel technique has been developed based on sensor selection method for simultaneous measurement of pressure and temperature fields on airfoil. The result of my postdoc work will be published very soon in international Journals. The project also resulted in four international conference presentations.

現在までの達成度 (段落)

令和3年度が最終年度であるため、記入しない。

今後の研究の推進方策

令和3年度が最終年度であるため、記入しない。

  • 研究成果

    (7件)

すべて 2022 2021

すべて 雑誌論文 (4件) (うち国際共著 4件) 学会発表 (2件) (うち国際学会 2件) 学会・シンポジウム開催 (1件)

  • [雑誌論文] Simultaneous measurement of pressure and temperature on the same surface by sensitive paints using the sensor selection method2022

    • 著者名/発表者名
      N. Tiwari, K. Uchida, R. Inoba, Y. Saito , K. Asai , T. Nonomura
    • 雑誌名

      Experiments in Fluids (preparation)

      巻: NA ページ: NA

    • 国際共著
  • [雑誌論文] Integration of non-time-resolved velocity snapshots and time-resolved point sensors for supersonic jet flows2022

    • 著者名/発表者名
      N. Tiwari, T. Nonomura
    • 雑誌名

      Experiments in Fluids (preparation)

      巻: NA ページ: NA

    • 国際共著
  • [雑誌論文] PIV-based estimation of viscosity and pressure fields for a steady pseudoplastic flow2021

    • 著者名/発表者名
      N. Tiwari, Y. Tasaka,Y. Murai
    • 雑誌名

      Flow Measurement and Instrumentation

      巻: 77 ページ: 101852

    • DOI

      10.1016/j.flowmeasinst.2020.101852

    • 国際共著
  • [雑誌論文] Ultrasonic velocity profiler applied to explore viscosity-pressure fields and their coupling in shear-thinning vortex streets2021

    • 著者名/発表者名
      N. Tiwari, Y. Tasaka, Y. Murai
    • 雑誌名

      Experiments in Fluids

      巻: 62 ページ: 185

    • DOI

      10.1007/s00348-021-03257-w

    • 国際共著
  • [学会発表] Supersonic jet flow reconstruction by optimized sparse sensors based on sensor selection method2021

    • 著者名/発表者名
      N. Tiwari, Y. Ozawa, T. Nonomura
    • 学会等名
      Eighteenth International Conference on Flow Dynamics
    • 国際学会
  • [学会発表] Ultrasound velocity profiling-based viscosity and pressure estimation in shear-thinning unsteady flow2021

    • 著者名/発表者名
      N. Tiwari, Y. Murai
    • 学会等名
      International Symposium on Ultrasound Doppler Method for Fluid Mechanics and Fluids Engineering 2021
    • 国際学会
  • [学会・シンポジウム開催] Application of Particle Image Velocimetry -Theory and Practice2021

URL: 

公開日: 2022-12-28  

サービス概要 検索マニュアル よくある質問 お知らせ 利用規程 科研費による研究の帰属

Powered by NII kakenhi