کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1861261 1037499 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Response of force behaviors of a spherical particle to an oscillating flow
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Response of force behaviors of a spherical particle to an oscillating flow
چکیده انگلیسی

Combined multi-direct forcing technique and the immersed boundary method is applied to investigate the response of force behaviors of a fixed spherical particle to an oscillating flow. The influences of the inlet oscillating flow at a mean Reynolds number of 300 with six different oscillating frequencies and three oscillating amplitudes are investigated. Three different zones with different behaviors are identified and the specific behaviors of the drag and the lift coefficients are analyzed. The averaged drag coefficient and the maximum lift force exerted on the particle increase with the increment of the oscillating Reynolds number or the oscillating amplitude. When the frequency of the inlet flow is equal to the natural vortex shedding frequency, the average drag coefficient reaches the maximum value. A linear relation between the gradient of the maximum lift coefficient and the frequency as well as the amplitude of the inlet oscillating flow is observed in certain regime.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 374, Issue 30, 5 July 2010, Pages 3046–3052
نویسندگان
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