کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7152554 1462405 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Wave propagation in a waveguide with continuous right-angled corners: Numerical simulations and experiment measurements
ترجمه فارسی عنوان
انتشار موج در یک موجبر با گوشه های ثابت مستطیلی: شبیه سازی عددی و اندازه گیری های آزمایشی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
چکیده انگلیسی
This paper studied the acoustic wave propagation in a waveguide with continuous right-angled corners, with emphasis on the effect brought by the distance between the corners. The numerical analyses showed that at middle to high frequencies, the transmission loss (TL) of a multi-cornered waveguide was 2-5 dB higher than that of single-cornered and varied with frequency. To explain the performance at peaks and dips in the TL curve, analyses on eigenmodes and sound intensity distribution were conducted. The performance of multi-cornered waveguides was experimentally investigated, which fit well with the numerical results. The present study indicates that, for a waveguide with continuous corners, its acoustic performance is not simply a “summation” of two individual single-cornered ones. Both the standing wave modes and the evanescent modes between the corners lead to its complicated frequency performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Acoustics - Volume 104, March 2016, Pages 6-15
نویسندگان
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