• effects of near-wall heat source on particle deposition

    نویسندگان :
    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 981
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     particle deposition in a chamber with a near-wall heat source is studied by cfd (computational fluid dynamics) modeling. the random walk model of lagrangian approach is adopted to investigate deposition fractions and particle deposition numbers on different orientation surfaces of particles ranging from 2.5 μm to 10.0 μm by predicting the trajectories of 2000 particles with a density of 1400 kg/m3. the effects of the heat source surface temperature and the gap between the heat source and the near wall on indoor particle deposition are studied. the results indicate that the heat source surface temperature and the gap between the heat source and the near wall affect particle deposition on surfaces. the impacts of these two factors on particle deposition on the floor, the ceiling, the non-near surrounding vertical walls and the near wall can be further influenced by the size of particles.

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