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The Approximate Solution of 2D Dirichlet Problem in Doubly Connected Domains
المؤلفون المشاركون
El-shenawy, Atallah
Shirokova, Elena A.
المصدر
Advances in Mathematical Physics
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-6، 6ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-07-09
دولة النشر
مصر
عدد الصفحات
6
التخصصات الرئيسية
الملخص EN
We propose a new method for constructing an approximate solution of the two-dimensional Laplace equation in an arbitrary doubly connected domain with smooth boundaries for Dirichlet boundary conditions.
Using the fact that the solution of the Dirichlet problem in a doubly connected domain is represented as the sum of a solution of the Schwarz problem and a logarithmic function, we reduce the solution of the Schwartz problem to the Fredholm integral equation with respect to the boundary value of the conjugate harmonic function.
The solution of the integral equation in its turn is reduced to solving a linear system with respect to the Fourier coefficients of the truncated expansion of the boundary value of the conjugate harmonic function.
The unknown coefficient of the logarithmic component of the solution of the Dirichlet problem is determined from the following fact.
The Cauchy integral over the boundary of the domain with a density that is the boundary value of the analytical in this domain function vanishes at points outside the domain.
The resulting solution of the Dirichlet problem is the sum of the real part of the Cauchy integral in the given domain and the logarithmic function.
In order to avoid singularities of the Cauchy integral at points near the boundary, the solution at these points is replaced by a linear function.
The resulting numerical solution is continuous in the domain up to the boundaries.
Three examples of the solution of the Dirichlet problem are given: one example demonstrates the solution with constant boundary conditions in the domain with a complicated boundary; the other examples provide a comparison of the approximate solution with the known exact solution in a noncircular domain.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
El-shenawy, Atallah& Shirokova, Elena A.. 2018. The Approximate Solution of 2D Dirichlet Problem in Doubly Connected Domains. Advances in Mathematical Physics،Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1119234
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
El-shenawy, Atallah& Shirokova, Elena A.. The Approximate Solution of 2D Dirichlet Problem in Doubly Connected Domains. Advances in Mathematical Physics No. 2018 (2018), pp.1-6.
https://search.emarefa.net/detail/BIM-1119234
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
El-shenawy, Atallah& Shirokova, Elena A.. The Approximate Solution of 2D Dirichlet Problem in Doubly Connected Domains. Advances in Mathematical Physics. 2018. Vol. 2018, no. 2018, pp.1-6.
https://search.emarefa.net/detail/BIM-1119234
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1119234
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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