A Numerical Method for Predicting Acoustical Wave Propagation in Open Spaces
المؤلفون المشاركون
Tsangaris, Sokrates
Papageorgakopoulos, Johnny
المصدر
العدد
المجلد 2011، العدد 2011 (31 ديسمبر/كانون الأول 2011)، ص ص. 1-15، 15ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2011-05-09
دولة النشر
مصر
عدد الصفحات
15
التخصصات الرئيسية
الملخص EN
We present a numerical methodology for evaluating wave propagation phenomena in two dimensions in the time domain with focus on the linear acoustic second-order wave equation.
An outline of the higher-order compact discretization schemes followed by the time discretization technique is first presented.
The method is completed with the addition of spatial filtering based on the same compact schemes' principles.
The important role of boundary conditions is subsequently addressed.
Two popular ways to truncate the computational domain in the near field are presented and compared here: first the formulation of “absorbing conditions” in the form of partial differential equations especially for the origin and second the construction of an absorbing layer surrounding the domain, in which waves (after they have exited the domain) are attenuated and decayed exponentially.
Subsequently, the method is assessed by recalling three benchmark problems.
In the first where a Gaussian pulse is generated and propagated in a 2D rectangular domain, the accuracy and absorbability of the boundary conditions are compared.
In the second, a similar situation is investigated but under curvilinear coordinates and under the presence of a solid body which scatters the pulse.
Finally the sound field inducted by the flow of corotating vortex pair is calculated and compared with the corresponding analytical solution.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Papageorgakopoulos, Johnny& Tsangaris, Sokrates. 2011. A Numerical Method for Predicting Acoustical Wave Propagation in Open Spaces. ISRN Mechanical Engineering،Vol. 2011, no. 2011, pp.1-15.
https://search.emarefa.net/detail/BIM-451812
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Papageorgakopoulos, Johnny& Tsangaris, Sokrates. A Numerical Method for Predicting Acoustical Wave Propagation in Open Spaces. ISRN Mechanical Engineering No. 2011 (2011), pp.1-15.
https://search.emarefa.net/detail/BIM-451812
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Papageorgakopoulos, Johnny& Tsangaris, Sokrates. A Numerical Method for Predicting Acoustical Wave Propagation in Open Spaces. ISRN Mechanical Engineering. 2011. Vol. 2011, no. 2011, pp.1-15.
https://search.emarefa.net/detail/BIM-451812
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-451812
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر