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Solution of the problem of propagation of water waves over a pair of asymmetrical rectangular trenches

Kaur, Amandeep and Martha, S C and Chakrabarti, A (2019) Solution of the problem of propagation of water waves over a pair of asymmetrical rectangular trenches. In: APPLIED OCEAN RESEARCH, 93 .

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Official URL: http://doi.org/0.1016/j.apor.2019.101946

Abstract

The problem of propagation of obliquely incident surface water waves over a pair of asymmetrical rectangular trenches in a channel of finite depth is examined for its solution. The mathematical problem is handled for its numerical solution with the aid of a system of singular integral equations of first kind. The resulting integral equations are solved numerically by using suitably designed polynomial approximations of the unknown functions. System of linear algebraic equations is obtained by utilizing the zeros of Chebyshev polynomial of first kind as collocation points and hence the occurrence of ill-conditioned matrix is avoided. The effectiveness of the pair of trenches is studied by analyzing the physical quantities namely the reflection and transmission coefficients. As a special limiting case, the results for a single trench problem are derived and are found to be in excellent agreement with the results available in the literature. The effect of various parameters are analyzed through different graphs for a pair of asymmetrical trenches. The energy balance relation is derived and used to check the accuracy of numerical results.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to ELSEVIER SCI LTD.
Keywords: A pair of trenches; System of singular integral equations of first kind; Polynomial approximation; Reflection and transmission coefficients
Department/Centre: Division of Physical & Mathematical Sciences > Mathematics
Depositing User: Id for Latest eprints
Date Deposited: 31 Dec 2019 10:31
Last Modified: 31 Dec 2019 10:31
URI: http://eprints.iisc.ac.in/id/eprint/64091

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