Journal of Nonlinear Mathematical Physics

Volume 19, Issue 1, March 2012, Pages 38 - 47

High-Frequency Asymptotics for the Helmholtz Equation in a Half-Plane

Authors
Min-Hai Huang
College of Mathematics and Information Sciences, Zhaoqing University, Zhaoqing, GuangDong 526061, P. R. China
Department of Mathematics, ZhongShan University, GuangZhou 510275, P. R. China,hmh9520@sina.com
Received 18 April 2011, Accepted 28 September 2011, Available Online 6 January 2021.
DOI
10.1142/S1402925112500040How to use a DOI?
Keywords
High-frequency asymptotics; Fokas' transform method; method of steepest descents; Helmholtz equation; Neumann condition
Abstract

Base on the integral representations of the solution being derived via Fokas' transform method, the high-frequency asymptotics for the solution of the Helmholtz equation, in a half-plane and subject to the Neumann condition is discussed. For the case of piecewise constant boundary data, full asymptotic expansions of the solution are obtained by using Watson's lemma and the method of steepest descents for definite integrals.

Copyright
© 2012 The Authors. Published by Atlantis Press and Taylor & Francis
Open Access
This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).

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Journal
Journal of Nonlinear Mathematical Physics
Volume-Issue
19 - 1
Pages
38 - 47
Publication Date
2021/01/06
ISSN (Online)
1776-0852
ISSN (Print)
1402-9251
DOI
10.1142/S1402925112500040How to use a DOI?
Copyright
© 2012 The Authors. Published by Atlantis Press and Taylor & Francis
Open Access
This is an open access article distributed under the CC BY-NC 4.0 license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - JOUR
AU  - Min-Hai Huang
PY  - 2021
DA  - 2021/01/06
TI  - High-Frequency Asymptotics for the Helmholtz Equation in a Half-Plane
JO  - Journal of Nonlinear Mathematical Physics
SP  - 38
EP  - 47
VL  - 19
IS  - 1
SN  - 1776-0852
UR  - https://doi.org/10.1142/S1402925112500040
DO  - 10.1142/S1402925112500040
ID  - Huang2021
ER  -