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Cauchy-poisson problem for a two-layer fluid with an inertial surface

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Abstract

This paper is concerned with the generation of waves due to initial disturbances at the upper surface of a two-layer fluid, as the upper layer is covered by an inertial surface and the lower layer extends infinitely downwards. The inertial surface is composed of thin but uniform distribution of non-interacting material. In the mathematical analysis, the Fourier and Laplace transform techniques have been utilized to obtain the depressions of the inertial surface and the interface in the form of infinite integrals. For initial disturbances concentrated at a point, the inertial surface depression and the interface depression are evaluated asymptotically for large time and distance by using the method of stationary phase. They are also depicted graphically for two types of initial disturbances and appropriate conclusions are made.

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Correspondence to B. N. Mandal.

Additional information

Foundation item: Supported by the DST Research Project No. SR/SY/MS: 521/08 and CSIR, New Delhi.

Harpreet Dhillon was born in 1986. She is working as a Junior Research Fellow in the Department of Mathematics, Jadavpur University, Kolkata, India. Her current research interests include water wave problems.

B.N. Mandal was born in 1943. He is a NASI Platinum Jubilee Senior Scientist in the Physics and Applied Mathematics Unit, Indian Statistical Institute, Kolkata, India. His current research interests include water wave problems and associated mathematical techniques, Integral equations, Integral expansions, etc.

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Dhillon, H., Mandal, B.N. Cauchy-poisson problem for a two-layer fluid with an inertial surface. J. Marine. Sci. Appl. 12, 21–30 (2013). https://doi.org/10.1007/s11804-013-1163-z

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  • DOI: https://doi.org/10.1007/s11804-013-1163-z

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