کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1759486 1019279 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Novel device to measure critical point “Onset” of capillary wave and interpretation of Faraday instability wave by numerical analysis
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
Novel device to measure critical point “Onset” of capillary wave and interpretation of Faraday instability wave by numerical analysis
چکیده انگلیسی

A capillary wave was created on a surface by vibrating from the bottom of a container. When the amplitude of the container vibration approached the critical point, called the onset state, the surface broke up and bursted into very small drops on the air. The numerical analysis was used to determine the amplitude of the onset. The onset point was found to be 0.349 μm at f = 500 kHz. The critical amplitude hcr was determined by using a multi-Fourier horn nozzle (MFHN) device. The onset point was measured to be 0.37 μm using a laser Doppler vibrometer (LDV) with the MFHN at f = 486 kHz. These drops indicate that particle size distributions of 10.8 μm and 7.0 μm were produced by the MFHN at f = 289 kHz and f = 486 kHz, respectively. These results agreed with those obtained using Kelvin’s equation, which predicted D = 0.34λ.


► The onset point was found to be 0.349 mm at f = 500 kHz.
► The experimental results verify Kelvin’s equation with a Lang’s constant of 0.34.
► Potential applications include nano-particle synthesis and drug inhalation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 52, Issue 1, January 2012, Pages 54–61
نویسندگان
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