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Development of Micro-scale Wind-Tunnel Technology for Micro-flow Studies

Research Project

Project/Area Number 16360419
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Aerospace engineering
Research InstitutionTohoku University

Principal Investigator

ASAI Keisuke  Tohoku University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (40358669)

Co-Investigator(Kenkyū-buntansha) YU Fukunishi  Tohoku University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (60189967)
NAGAI Hiroki  Tohoku University, Graduate School of Engineering, Research Associate, 大学院・工学研究科, 助手 (70360724)
Project Period (FY) 2004 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥15,200,000 (Direct Cost: ¥15,200,000)
Fiscal Year 2005: ¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 2004: ¥9,800,000 (Direct Cost: ¥9,800,000)
KeywordsMicro Flow / Pressure-Sensitive Paint / Temperature-Sensitive Paint / Supersonic Wind Tunnel / Micro Nozzle / Micro Channel / Low Reynolds Number / MEMS / マイクロ流れ / シュリーレン法 / 画像計測 / クヌッセン数
Research Abstract

In the present study, we developed two types of a micro wind tunnel capable of studying micrometer to millimeter sized flow devices. We classified our targets into two categories ; a supersonic micro wind tunnel and a micro fluid channel. The supersonic micro wind tunnel is an indraft-type Mach-2 tunnel having the test section of 10mm x 10mm. The contours of the Laval nozzle have been calculated using the method of characteristics and boundary-layer correction by the Navier-Stokes CFD calculation. Conventional techniques like pressure transducers and thermocouples cannot be used to calibrate the flow in such miniature-size wind tunnels. We used luminescent sensors like Pressure- and Temperature-Sensitive Paints (PSP/TSP). It has been confirmed that uniform flow condition is achieved in the test section during the run time on the order of several seconds. In addition to the micro supersonic tunnel, we also built a Mach-4 micro nozzle having the throat as narrow as 250 micrometers and st … More udied the evolution of supersonic flow in the nozzle. We measured pressure and temperature fields at very low Reynolds numbers by decreasing the settling-chamber pressure. These dataset had not been available in previous works. In this experiment, we discovered a strangle phenomenon that indicated the flow was decelerated upstream of the throat section. By comparing the obtained data with 3-DNavier-Stokes CFD calculation, we found that this unusual phenomenon occurred due to viscous layers on the nozzle walls and the sidewalls. For the study of fluid flow in a micro channel, we developed micro channel flow system driven by a syringe pump. In the mixing channel, liquid from two tanks were mixed. The effects of channel geometry and the period of sinusoidal forcing on the mixing were examined experimentally. It was shown that the most effective mixing could be accomplished by stratification of two liquids. The theoretical density pattern obtained by Lattice-Boltzmann Method agreed well with the experimental data. Less

Report

(3 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • Research Products

    (16 results)

All 2006 2005 2004

All Journal Article (11 results) Book (3 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] Redox and photochemical behaviour of a porphyrin monolayer on an indium-tin oxide electrode2005

    • Author(s)
      N.Araki, M.Obata, et al.
    • Journal Title

      Electrochimica Acta 51

      Pages: 677-683

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Synthesis of Poly(isobuty1 methacrylate-co-2,2,2-trifluoroethy1 methacrylate) having Tetrapheny1porphinato Platinum(II) Moiety as an Oxygen-Sensing Dye for Pressure Sensitive Paint (PSP)2005

    • Author(s)
      M.Obata, Y.Tanaka, et al.
    • Journal Title

      J. Poym. Sci. Part A Chemistry 43(14)

      Pages: 2997-3006

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Image measurements of unsteady pressure fluctuation by a pressure-sensitive coating on porous anodized aluminum2005

    • Author(s)
      M.Kameda, T.Tabei, et al.
    • Journal Title

      Measurement Science and Technology 16(12)

      Pages: 2517-2524

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Annual Research Report 2005 Final Research Report Summary
  • [Journal Article] Redox and photochemical behaviour of a porphyrin monolayer on an indium-tin oxide electrode2005

    • Author(s)
      Naoko Araki, Makoto Obata, et al.
    • Journal Title

      Electrochimica Acta 51

      Pages: 677-683

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Synthesis of Poly(isobutyl methacrylate-co-2,2,2-trifluoroethyl methacrylate) having Tetraphenylporphinato Platinum(II) Moiety as an Oxygen-Sensing Dye for Pressure Sensitive Paint (PSP)2005

    • Author(s)
      M.Obata, Y.Tanaka, et al.
    • Journal Title

      J Poym.Sci.Part A Chemistry 43(14)

      Pages: 2997-3006

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Image measurements of unsteady pressure fluctuation by a pressure-sensitive coating on porous anodized aluminum2005

    • Author(s)
      Kameda, M., Tabei, T., et al.
    • Journal Title

      Measurement Science and Technology 16(12)

      Pages: 2517-2524

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Synthesis of Poly (isobutyl methacrylate-co-2,2,2-trifluoroethyl methacrylate) having Tetraphenylporphinato Platinum(II) Moiety as an Oxygen-Sensing Dye for Pressure Sensitive Paint (PSP)2005

    • Author(s)
      M.Obata, N.Tanaka, et al.
    • Journal Title

      J.Poym.Sci.Part A Chemistry 43(14)

      Pages: 2997-3006

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 陽極酸化アルミニウム感圧コーティングによる非定常流中物体表面圧力場の画像計測2005

    • Author(s)
      亀田 正治, 田部井 孝聡, 他
    • Journal Title

      日本機械学会論文集B編 71(710)

      Pages: 2486-2493

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Application of Pressure-Sensitive Paints to Low Pressure Range2005

    • Author(s)
      T.Niimi, M.Yoshida, M.Kondo, Y.Oshima, H.Mori, Y.Egami, K.Asai, H.Nishide
    • Journal Title

      J.of Thermophysics and Heat Transfer 19.1

      Pages: 9-16

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Development of a New Device to Control Oblique Waves in Transitional Boundary Lavers2005

    • Author(s)
      Y.Fukunishi, S.Izawa, K.Morita
    • Journal Title

      Fluid Dynamics Research 36・1

      Pages: 9-22

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Adsorptive pressure-sensitive coatings on porous anodized aluminum2004

    • Author(s)
      M.Kameda, N.Tezuka, T.Hangai, K.Asai, K.Nakakita, Y.Amao
    • Journal Title

      Measurement Science and Technology 15

      Pages: 489-500

    • Related Report
      2004 Annual Research Report
  • [Book] 「非侵襲・可視化技術ハンドブック」(第9章 流れの可視化、第1節トレーサ法、3.感圧塗料(PSP)・感温塗料(TSP))2006

    • Author(s)
      浅井圭介, 亀田正治(分担執筆)
    • Publisher
      (株) エヌ・ティー・エス
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] "Pressure- and Temperature-Sensitive Paints", Section 9.3, Chapter 9 "Flow Visualization", Handbook on Non-intrusive Measurement and Visualization Techniques" (in Japanese)2006

    • Author(s)
      Asai, K., Kameda, M.
    • Publisher
      NTS, Publishing, Tokyo, Japan(to be published)
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Book] 可視化情報ライブラリー4 PIVと画像解析技術2004

    • Author(s)
      可視化情報学会 編(分担執筆:浅井圭介)
    • Total Pages
      172
    • Publisher
      朝倉出版
    • Related Report
      2004 Annual Research Report
  • [Patent(Industrial Property Rights)] 燃料電池の酸素分圧分布及び温度分布の計測方法及びその装置2005

    • Inventor(s)
      浅井圭介, 永井大樹, 他2名
    • Industrial Property Rights Holder
      東北大学, トヨタ自動車(株)
    • Industrial Property Number
      2005-151167
    • Filing Date
      2005-05-24
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Patent(Industrial Property Rights)] 燃料電池の酸素分圧分布及び温度分布の計測方法及びその装置2005

    • Inventor(s)
      浅井 圭介, 永井 大樹, 他2名
    • Industrial Property Rights Holder
      東北大学, トヨタ自動車(株)
    • Industrial Property Number
      2005-151167
    • Filing Date
      2005-05-24
    • Related Report
      2005 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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