کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
513420 866477 2009 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computation of time and space derivatives in a CQM-based BEM formulation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
پیش نمایش صفحه اول مقاله
Computation of time and space derivatives in a CQM-based BEM formulation
چکیده انگلیسی

This work proposes an approach for the numerical computation of time and space derivatives of the time-domain solution of scalar wave propagation problems by means of a boundary element method formulation. Here, this formulation employs the so-called convolution quadrature method. Non-homogeneous initial conditions are taken into account by means of a general procedure, known as initial condition pseudo-force procedure, which replaces the initial conditions by equivalent pseudo-forces. The boundary integral equation with initial conditions contribution is differentiated analytically and the quadrature weights of the standard formulation are transformed in order to compute time and space derivatives at interior points. Numerical examples are presented to show the efficiency of the implemented formulation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Analysis with Boundary Elements - Volume 33, Issue 3, March 2009, Pages 314–321
نویسندگان
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