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  • characteristics of surface oscillation in thermocapillary convection

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 952
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
      the characteristics of surface oscillation in a rectangular pool of silicone oil have been investigated experimentally. the horizontal cross-section of the pool is 52 mm × 36 mm, and the depth of the silicone oil layer is in the range of 1.1–4.8 mm. the applied temperature difference between the two sidewalls leads to shear flow along the free surface from hot to cold and a back flow in the underlying layer. with the increase of the temperature difference, the original steady flow will become unstable to unsteady flow. a ccd laser displacement-sensor with high resolution is used to measure the position of the liquid surface dynamically. and the hilbert–huang transform is chosen to analyze the experiment data which is nonlinear and non-stationary. the characteristics of surface oscillation have been obtained. and the relationship of the characteristics with the temperature difference and liquid layer depth has been discussed in details.

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