J053044 感圧分子膜によるマイクロ気体流れの圧力分布計測(〔J053-04〕マイクロ・ナノスケールの熱流体現象(4))

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タイトル別名
  • J053044 Micro Gas Flow Measurement by Pressure-Sensitive Molecular Film

抄録

It has been desired to measure pressure distribution in a micro channel for understanding micro-scale thermo-fluid phenomena. Pressure-sensitive paint (PSP) technique is an optical measurement technique using luminescent molecules, seemed to be suitable for analysis of micro/nano flow. However, the spatial resolution of PSP is insufficient for applying to micro-scale measurements due to the aggregation of the luminescent molecules. Therefore, we fabricated pressure-sensitive molecular film (PSMF) by Langmuir-Blodgett (LB) method. LB method can fabricate very thin molecular film with controlling the intermolecular spacing of luminescent molecules. PSMF fabricated by this method has enough high spatial resolution to measure micro-gas flows. The pressure distribution in a micro channel with a bend of 90° was measured by PSMF. The low pressure region was found at near the inner wall behind the bend suggesting the flow separation. Additionally, the high pressure area downstream of the separation region was observed, indicating the flow reattachment.

収録刊行物

  • 年次大会

    年次大会 2013 (0), _J053044-1-_J053044-3, 2013-09-08

    一般社団法人 日本機械学会

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