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On steady non-breaking downstream waves and the wave resistance – Stokes’ method

Published online by Cambridge University Press:  20 February 2017

Dmitri V. Maklakov Open the ORCID record for Dmitri V. Maklakov [Opens in a new window]  and
Alexander G. Petrov
Dmitri V. Maklakov*
Affiliation:
Kazan (Volga region) Federal University, N.I. Lobachevsky Institute of Mathematics and Mechanics, Kremlyovskaya 35, Kazan, 420008, Russia
Alexander G. Petrov
Affiliation:
Institute for Problems in Mechanics of the Russian Academy of Sciences, prosp. Vernadskogo 101, block 1, Moscow, 119526, Russia
*
†Email address for correspondence: dmaklak@kpfu.ru
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Abstract

In this work, we have obtained explicit analytical formulae expressing the wave resistance of a two-dimensional body in terms of geometric parameters of nonlinear downstream waves. The formulae have been constructed in the form of high-order asymptotic expansions in powers of the wave amplitude with coefficients depending on the mean depth. To obtain these expansions, the second Stokes method has been used. The analysis represents the next step of the research carried out in Maklakov & Petrov (J. Fluid Mech., vol. 776, 2015, pp. 290–315), where the properties of the waves have been computed by a numerical method of integral equations. In the present work, we have derived a quadratic system of equations with respect to the coefficients of the second Stokes method and developed an effective computer algorithm for solving the system. Comparison with previous numerical results obtained by the method of integral equations has been made.

JFM classification

Waves/Free-surface Flows: Channel flow Waves/Free-surface Flows: Surface gravity waves Waves/Free-surface Flows: Waves/Free-surface Flows
Type
Papers
Information
Journal of Fluid Mechanics , Volume 815 , 25 March 2017 , pp. 388 - 414
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Copyright
© 2017 Cambridge University Press 

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