Generation of surface waves due to initial axisymmetric surface disturbance in water with a porous bottom

• Autorzy: Kundu P. , Mandal B. N.

Identyfikatory

DOI

10.2478/ijame-2019-0039

• Języki publikacji: EN

Abstrakty

EN

A two-dimensional Cauchy Poisson problem for water with a porous bottom generated by an axisymmetric initial surface disturbance is investigated here. The problem is formulated as an initial value problem for the velocity potential describing the motion in the fluid. The Laplace and Hankel transform techniques have been used in the mathematical analysis to obtain the form of the free surface in terms of a multiple infinite integral. This integral is then evaluated asymptotically by the method of stationary phase. The asymptotic form of the free surface is depicted graphically in a number of figures for different values of the porosity parameter and for different types of initial disturbances.

Słowa kluczowe

EN

axisymmetric surface disturbance; porous bottom; Laplace and Hankel transform; method of stationary phase; free surface depression

PL

transformata Laplace'a; powierzchnia porowata; transformata Henkel'a

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2019
• Tom: Vol. 24, no. 3
• Strony: 625--644
• Opis fizyczny: Bibliogr. 8 poz., wykr.

Twórcy

autor

Kundu P.

• Department of Mathematics, Jadavpur University Kolkata-700032, INDIA

autor

Mandal B. N.

• Physics and Applied Mathematics Unit, Indian Statistical Institute 203 B.T Road, Kolkata-700108, INDIA

Bibliografia

• [1] Lamb H. (1945): Hydrodynamics. New York: Dover.
• [2] Stoker J.J. (1957): Water Waves the Mathematical Theory with Applications. New York: Interscience Publishers.
• [3] Jeffreys H. and Lapwood E.R. (1957): The reflexion of a pulse within a sphere. Proc. Roy. Soc. A London, vol.241, pp.455-479.
• [4] Kranzer H.C. and Keller J.B. (1959): Water waves produced by explosions. J. Appl. Phys., vol.30, pp.398–407.
• [5] Mandal B.N. and Mukherjee S. (1989): Water waves generated at an inertial surface by an axisymmetric initial surface disturbance. Int. J. Math. Educ. Sci. Tech., vol.20, pp.743-747.
• [6] Maiti P. and Mandal B.N. (2005): Water waves generated due to initial axisymmetric disturbances in water with an ice-cover. Arch. Appl. Mech., vol.74, pp.629-636.
• [7] Martha S.C., Bora S.N. and Chakrabarti A. (2007): Oblique water wave scattering by small undulation on a porous sea bed. Appl. Ocean. Res., vol.29, pp.86-90.
• [8] Maiti P. and Mandal B.N. (2014): Water wave scattering by an elastic plate floating in an ocean with a porous bed. Appl. Ocean. Res., vol.47, pp.73-84.

Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020)