Journal of Ocean Engineering and Science (JOES) provides a medium for the publication of original research and latest development work in the field of science and technology.

Editor- in-chief: Jianmin YANG                                                                                                            

Associated Editor-in-chief: J Kim VANDIVER  ; Shi-jun LIAO       

contact E-mail: submit@joes.sjtu.com

submit address:http://www.journals.elsevier.com/journal-of-ocean-engineering-and-science/

 

Forthcoming articles: More
(7)A research on the energy efficiency operational indicator EEOI calculation tool on M/V NSU JUSTICE of VINIC transportation company, Vietnam
【 Abstract】 (PDF)
(6)Abundant general solitary wave solutions to the family of KdV type equations

PDF.pdf

Md. Azmol Huda a , M. Ali Akbar b , , Shewli Shamim Shanta c
a Mathematics Discipline, Khulna University, Khulna, Bangladesh

b Department of Applied Mathematics, University of Rajshahi, Rajshahi, Bangladesh

c Department of Mathematics, University of Rajshahi, Rajshahi, Bangladesh

Received 4 November 2016; received in revised form 7 January 2017; accepted 6 February 2017
Available online 1 March 2017

Abstract
This work explores the construction of more general exact traveling wave solutions of some nonlinear evolution equations (NLEEs)
through the application of the ( G  / G , 1/ G )-expansion method. This method is allied to the widely used ( G  / G )-method initiated by Wang et al. and can be considered as an extension of the ( G  / G )-expansion method. For effectiveness, the method is applied to the family of KdV type equations. Abundant general form solitary wave solutions as well as periodic solutions are successfully obtained through this method. Moreover, in the obtained wider set of solutions, if we set special values of the parameters, some previously known solutions are revived. The approach of this method is simple and elegantly standard. Having been computerized it is also powerful, reliable and effective.
© 2017 Shanghai Jiaotong University. Published by Elsevier B.V.
This is an open access article under the CC BY-NC-ND license. (
http://creativecommons.org/licenses/by-nc-nd/4.0/ )

 

Keywords: Nonlinear evolution equation; Solitary wave solution; Potential KdV equation; Complex modified KdV equation.

 

【 Abstract】 (PDF)
(5)New exact solutions of coupled Boussinesq–Burgers equations by Exp-function method

PDF.pdf

L.K. Ravi, S. Saha Ray , S. Sahoo
National Institute of Technology, Department of Mathematics, Rourkela 769008, India

Received 3 August 2016; received in revised form 8 September 2016; accepted 18 September 2016
Available online 22 September 2016

Abstract
In the present paper, we build the new analytical exact solutions of a nonlinear differential equation, specifically, coupled Boussinesq–
Burgers equations by means of Exp-function method. Then, we analyze the results by plotting the three dimensional soliton graphs for each case, which exhibit the simplicity and effectiveness of the proposed method. The primary purpose of this paper is to employ a new approach, which allows us victorious and efficient derivation of the new analytical exact solutions for the coupled Boussinesq–Burgers equations.
© 2016 Shanghai Jiaotong University. Published by Elsevier B.V.
This is an open access article under the CC BY-NC-ND license. (
http://creativecommons.org/licenses/by-nc-nd/4.0/ )

Keywords: Exp-function method; Solitary wave solutions; Non-linear evolution equations; Coupled Boussinesq–Burgers equations.

【 Abstract】 (PDF)
(4)Traveling wave solutions for shallow water equations

 

PDF.pdf

U.M. Abdelsalam
Department of Mathematics, Faculty of Science, Fayoum University, Al Fayoum, Egypt

Received 15 November 2016; received in revised form 6 January 2017; accepted 6 February 2017
Available online 14 February 2017

Abstract
An extended homogeneous balance method is suggested in this paper. Based on computerized symbolic computation and the homogeneous balance method, new exact traveling wave solutions of nonlinear partial differential equations (PDEs) are presented. The shallow-water equations represent a simple yet realistic set of equations typically found in atmospheric or ocean modeling applications, we consider the exact solutions of the nonlinear generalized shallow water equation and the fourth order Boussinesq equation. Applying this method, with the aid of Mathematica, many new exact traveling wave solutions are successfully obtained.
© 2017 Shanghai Jiaotong University. Published by Elsevier B.V.
This is an open access article under the CC BY-NC-ND license. (
http://creativecommons.org/licenses/by-nc-nd/4.0/ )

Keywords: Extended homogeneous balance method; Shallow water equation; Boussinesq equation; Traveling wave solutions.

【 Abstract】 (PDF)
(3)Approximation of surface–groundwater interaction mediated by vertical streambank in sloping terrains

PDF.pdf

Rajeev K. Bansal
Department of Mathematics, National Defence Academy, Khadakwasla, Pune 411023, India

Received 15 April 2016; received in revised form 20 September 2016; accepted 5 October 2016
Available online 7 November 2016

Abstract
New analytical solutions are derived to estimate the interaction of surface and groundwater in a stream–aquifer system. The analytical model consists of an unconfined sloping aquifer of semi-infinite extant, interacting with a stream of varying water level in the presence of a thin vertical sedimentary layer of lesser hydraulic conductivity. Flow of subsurface seepage is characterized by a nonlinear Boussinesq equation subjected to mixed boundary conditions, including a nonlinear Cauchy boundary condition to approximate the flow through the sedimentary layer. Closed form analytical expressions for water head, discharge rate and volumetric exchange are derived by solving the linearized Boussinesq equation using Laplace transform technique. Asymptotic cases such as zero slope, absence of vertical clogging layer and abrupt change in stream-stage can be derived from the main results by taming one or more parameters. Analytical solutions of the linearized Boussinesq equation are compared with numerical solution of corresponding nonlinear equation to assess the validity of the linearization. Advantages of using a nonlinear Robin boundary condition, and combined effects of aquifer parameters on the bank storage characteristic of the aquifer are illustrated with a numerical example.
© 2016 Shanghai Jiaotong University. Published by Elsevier B.V.
This is an open access article under the CC BY-NC-ND license. (
http://creativecommons.org/licenses/by-nc-nd/4.0/ )

Keywords: Stream–aquifer interaction; Streambank; Sloping aquifer; Boussinesq equation; Laplace transform.

【 Abstract】 (PDF)
(2) Fully enclosed multi-axis inertial reaction mechanisms for wave energy conversion

PDF.pdf

I.A. Antoniadis, V. Georgoutsos, A. Paradeisiotis
Mechanical Design and Control Systems Section, Mechanical Engineering Department, National Technical University of Athens, Heroon Polytechniou 9, Zografou 15780, Greece

Received 9 October 2016; received in revised form 5 February 2017; accepted 9 February 2017
Available online 22 February 2017

Abstract
This paper introduces a novel concept for wave energy conversion, using fully enclosed appropriate internal body configurations, which provide inertial reaction against the motion of an external vessel. In this way, reliability, robustness and survivability under extreme weather conditions – a fundamental prerequisite for wave energy converters – can be achieved. Acting under the excitation of the waves, the external vessel is subjected to a simultaneous surge and pitch motion in all directions, ensuring maximum wave energy capture in comparison to other wave energy converters like point heave absorbers. The internal body is suspended from the external vessel body in such an appropriate geometrical configuration, that a symmetric four-bar mechanism is essentially formed. The main advantage of this suspension geometry is that a linear trajectory results for the centre of the mass of the suspended body with respect to the external vessel, enabling the introduction of a quite simple form of a Power Take Off (PTO) design. Thus, because of this simplicity and symmetry of the suspension geometry and of the PTO mechanism, the fundamental restrictions of other linear, pendulum or gyroscopic variants on inertial reacting bodies are significantly removed.
© 2017ShanghaiJiaotongUniversity.PublishedbyElsevierB.V.
This is an open access article under the CC BY-NC-ND license. (
http://creativecommons.org/licenses/by-nc-nd/4.0/ )

Keywords: Waves; Energy; Inertial; Pendulum; Platforms; Offshore.

【 Abstract】 (PDF)
(1)A new integrable nonlocal modified KdV equation: Abundant solutions with distinct physical structures

PDF.pdf

Abdul-Majid Wazwaz
Department of Mathematics, Saint Xavier University, Chicago, IL 60655, United States

Received 11 October 2016; accepted 7 November 2016
Available online 23 November 2016

Abstract
In this work we study a new integrable nonlocal modified Korteweg–de Vries equation (mKdV) which arises from a reduction of the AKNS scattering problem. We use a variety of distinct techniques to determine abundant solutions with distinct physical structures. We show that this nonlocal equation possesses a family of traveling solitary wave solutions that include solitons, kinks, periodic and singular solutions.
© 2017 Published by Elsevier B.V. on behalf of Shanghai Jiaotong University.
This is an open access article under the CC BY-NC-ND license. (
http://creativecommons.org/licenses/by-nc-nd/4.0/ )

Keywords: Nonlocal modified KdV equation; Soliton solutions; Periodic solutions; Exponential solutions.

【 Abstract】 (PDF)