Academic Journal
أعرض في EDS

Numerical experiments using CHIEF to treat the nonuniqueness in solving acoustic axisymmetric exterior problems via boundary integral equations

التفاصيل البيبلوغرافية
العنوان: Numerical experiments using CHIEF to treat the nonuniqueness in solving acoustic axisymmetric exterior problems via boundary integral equations
المؤلفون: Adel A.K. Mohsen, Martin Ochmann
المصدر: Journal of Advanced Research, Vol 1, Iss 3, Pp 227-232 (2010)
بيانات النشر: Elsevier, 2010.
سنة النشر: 2010
المجموعة: LCC:Medicine (General)
LCC:Science (General)
مصطلحات موضوعية: Helmholtz equation, Boundary integral equations, Acoustic radiation and scattering, Nonuniqueness, CHIEF method, Medicine (General), R5-920, Science (General), Q1-390
الوصف: The problem of nonuniqueness (NU) of the solution of exterior acoustic problems via boundary integral equations is discussed in this article. The efficient implementation of the CHIEF (Combined Helmholtz Integral Equations Formulation) method to axisymmetric problems is studied. Interior axial fields are used to indicate the solution error and to select proper CHIEF points. The procedure makes full use of LU-decomposition as well as the forward solution derived in the solution. Implementations of the procedure for hard spheres are presented. Accurate results are obtained up to a normalised radius of ka = 20.983, using only one CHIEF point. The radiation from a uniformly vibrating sphere is also considered. Accurate results for ka up to 16.927 are obtained using two CHIEF points.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2090-1232
2090-1224
Relation: http://www.sciencedirect.com/science/article/pii/S2090123210000627; https://doaj.org/toc/2090-1232; https://doaj.org/toc/2090-1224
DOI: 10.1016/j.jare.2010.05.006
URL الوصول: https://doaj.org/article/55dca4be237a40ee82b69b01a1d0a301
رقم الانضمام: edsdoj.55dca4be237a40ee82b69b01a1d0a301
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:20901232
20901224
DOI:10.1016/j.jare.2010.05.006