کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8256981 1534273 2015 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A finite volume approach for the simulation of nonlinear dissipative acoustic wave propagation
ترجمه فارسی عنوان
یک رویکرد حجم محدود برای شبیه سازی انتشار غیرخطی موج آکوستیک
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی
A form of the conservation equations for fluid dynamics is presented, deduced using slightly less restrictive hypothesis than those necessary to obtain the Westervelt equation. This formulation accounts for full wave diffraction, nonlinearity, and thermoviscous dissipative effects. A two-dimensional finite volume method using the Roe linearization was implemented to obtain numerically the solution of the proposed equations. In order to validate the code, two different tests have been performed: one against a special Taylor shock-like analytic solution, the other against published results on a High Intensity Focused Ultrasound (HIFU) system, both with satisfactory results. The code, available under an open source license, is written for parallel execution on a Graphics Processing Unit (GPU), thus improving performance by a factor of over 60 when compared to the standard serial execution finite volume code CLAWPACK 4.6.1, which has been used as reference for the implementation logic as well.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wave Motion - Volume 58, November 2015, Pages 180-195
نویسندگان
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