| 研究課題/領域番号 |
20J10276
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| 研究種目 |
特別研究員奨励費
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| 配分区分 | 補助金 |
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| 応募区分 | 国内 |
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| 審査区分 |
小区分19010:流体工学関連
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| 研究機関 | 東北大学 |
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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)
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| 研究期間 (年度) |
2020-04-24 – 2022-03-31
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| 研究課題ステータス |
完了 (2021年度)
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| 配分額 *注記 |
2,100千円 (直接経費: 2,100千円)
2021年度: 1,300千円 (直接経費: 1,000千円、間接経費: 300千円)
2020年度: 1,100千円 (直接経費: 1,100千円)
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| キーワード | Pressure estimation / Shear-thinning fluid / Pressure sensitive paint / Sensor selection method / Flow over cylinder / UVP / PIV / Data driven method / Pressure measurement / Non- Newtonian fluid / Data driven / stochastic estimation / sensor selection |
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| 研究開始時の研究の概要 |
To understand fluid flows experiments and numerical simulations are available methods. Experimental methods can give the flow information in real time but cannot give all flow variables such as velocity, pressure and viscosity in case of non-Newtonian fluid (toothpaste, shampoo etc). Similarly, numerical simulation is based on modelling and cannot provide the information in real time. I propose novel techniques which can provide the information of all the flow variable in real time. This technique will also be applicable in opaque and non-Newtonian fluids which are real demand of industries.
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| 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.
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| 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。
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| 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。
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