محبوبترین نویسندگان :
نویسندگان مقالات پربازدید :
مجله مهندسی شیمی
جزئیات رویداد
همایش ، رویداد ، ژورنال
اینستاگرام تی پی بین
حوزه های تحت پوشش رویداد

  • fluid mixing via multidirectional vortices in converging–diverging meandering microchannels with semi-elliptical side walls

    نویسندگان :
    کلمات کلیدی :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 727
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     an effective planar micromixer based on a meandering microchannel with converging–diverging cross section is proposed, fabricated and investigated in this work. the side walls of the microchannel consist of successive semi-elliptical surfaces with perpendicular major axes. the results of this work show that the fluid mixing in such a microchannel is enhanced by the multidirectional vortices, including the dean vortices in the transverse plane due to centrifugal force in the meander-channel flow and the separation vortices caused by the converging–diverging cross section of the meandering channel for the case with a large flow rate and a small enough radius of curvature. we fabricate the micromixer by a single lithography process and the fluid mixing in the micromixer is observed by using a confocal spectral microscope imaging system. the fluid mixing is also simulated by a commercial code. the simulation results are in reasonable agreement with the experimental results. the results show that the mixing efficiency of the present micromixer with a large expansion ratio defined as the maximum width divided by the minimum width of the main channel is generally better than that of the ordinary meander-channel micromixer with constant cross section for the case with a large flow rate and a small radius of curvature. besides, more simulation results show that the present meandering-channel micromixer formed by semi-elliptical side walls with perpendicular major axes is superior to the meandering-channel micromixer formed by semi-elliptical side walls with aligned major axes, the meandering-s micromixer and the sigma micromixer.

سوال خود را در مورد این مقاله مطرح نمایید :

با انتخاب دکمه ثبت پرسش، موافقت خود را با قوانین انتشار محتوا در وبسایت تی پی بین اعلام می کنم
مقالات جدیدترین رویدادها
مقالات جدیدترین ژورنال ها