University of Guilan Computational Sciences and Engineering 2783-2503 1 2 2021 09 01 Multiple complex and real soliton solutions to the new integrable (2+1)-dimensional Hirota–Satsuma–Ito equation 91 97 4714 10.22124/cse.2021.19380.1007 EN Kamyar Hosseini Department of Mathematics, Rasht Branch, Islamic Azad University, Rasht, Iran Roozbeh Pouyanmehr Department of Mechanical Engineering, University of Guilan, Rasht, Iran Reza Ansari Department of Mechanical Engineering, University of Guilan, Rasht, Iran Journal Article 2021 04 14 A new version of the integrable (2+1)-dimensional Hirota–Satsuma–Ito (2D-HSI) equation is studied in the present paper. The analysis is conducted systematically by considering the bilinear form of the new integrable 2D-HSI equation and utilizing different approaches. As a consequence, a number of multiple complex and real soliton solutions to the model are formally constructed. The findings can be useful to deeply understand the dynamical features of multiple-soliton solutions in mathematical physics. New integrable (2+1)-dimensional Hirota- Satsuma-Ito equation Bilinear form different approaches Multiple complex and real soliton solutions https://cse.guilan.ac.ir/article_4714_7e66e7958baf1dc8a5c7a5db694eff79.pdf
University of Guilan Computational Sciences and Engineering 2783-2503 1 2 2021 09 01 Analytical Approach Based on Tamimi-Ansari method for Solving Nonlinear Equations with Applications 99 108 4756 10.22124/cse.2021.19367.1005 EN Hadi Rezazadeh Faculty of Engineering Technology, Amol University of Special Modern Technologies, Amol, Iran Waleed Adel Department of Mathematics and Engineering Physics, Faculty of Engineering, Mansoura University, Egypt Amin Fazolahtabar Department of Mechanical Engineering, Babol University of Technology, Babol, Iran. R. A. Talarposhti Faculty of Modern Technologies Engineering, Amol University of Special Modern Technologies, Amol, Iran Journal Article 2021 04 13 In this article, a new powerful analytical method, the Tamimi-Ansari method (TAM), has been introduced to solve some nonlinear problems that have been used in physics. This method does not require any hypothesis to counter with the nonlinear term. These results are compared with the exact solution and two other analytical methods. A few examples have been presented to show that this method is effective and reliable. Analytical Methods nonlinear equations Porous medium heat transfer https://cse.guilan.ac.ir/article_4756_e4ff508601b3b134bf303ad698e687bc.pdf
University of Guilan Computational Sciences and Engineering 2783-2503 1 2 2021 09 01 A modified continuous lightweight authentication to increase the information security on internet of Things 109 121 4779 10.22124/cse.2021.19589.1015 EN Rahim Asghari Department of Electrical and Computer Engineering, Malek- Ashtar University, Tehran, Iran. Journal Article 2021 05 11 The internet of things is an emerging paradigm that will change the way we interact with objects and computers in the future. It envisions a global network of devices interacting with each other, over the internet, to perform a useful action. Firstly, we provided the overview of the internet of things and then the relevant technologies that can help in large-scale development of internet of things, then the security issues in internet of things and its challenging. Secondly, we analyzed some of the lightweight authentication protocol in internet of things based on different techniques such as RFID authentication and continuous authentication to evaluate their vulnerability. Finally, we proposed the solution for one of RFID authentication protocol by using physically unclonable functions. In this protocol, the valid authentication time period is proposed to enhance robustness of authentication between internet of things devices and used the authentication token to authenticate the message which transmits from sensor node to the gateway and at the end the security analysis is conducted to evaluate the security strength of the proposed protocol. Internet of Things security lightweight authentication protocol RFID https://cse.guilan.ac.ir/article_4779_1b7d72eeb70cb15ea43837ec7ac376aa.pdf
University of Guilan Computational Sciences and Engineering 2783-2503 1 2 2021 09 01 Vibration analysis of fractional viscoelastic CNTs conveying fluid resting on fractional viscoelastic foundation considering nonlocal effects 123 137 4719 10.22124/cse.2021.19440.1011 EN Mohammad Faraji Oskouie Department of Mechanical Engineering, University of Guilan, Rasht, Iran Reza Ansari Department of Mechanical Engineering, University of Guilan, Rasht, Iran Journal Article 2021 04 24 Presented herein is an investigation on the vibrational response of fractional viscoelastic carbon nanotubes (CNTs) conveying fluid and resting on a fractional viscoelastic foundation. The CNTs are modeled according to the Euler-Bernoulli beam theory, and the foundation is considered to be Winkler-type. Also, to incorporate the nanoscale effect into the model, Eringen’s nonlocal elasticity is applied. Derivation of governing equation is done by a variational principle together with the Kelvin-Voigt viscoelastic model. Two solution approaches are developed for obtaining the time response of embedded fluid-conveying CNTs. The first approach is on the basis of Galerkin’s method, while the GDQM and FDM are used in the second approach. Comprehensive numerical results are given to study the effects of elastic foundation, fractional order, damping, fluid, nonlocal parameter, geometrical properties and viscoelasticity coefficient on the time responses of CNTs subject to different boundary conditions. Fractional viscoelastic carbon nanotube Fluid flow Fractional viscoelastic foundation Vibration Nonlocality https://cse.guilan.ac.ir/article_4719_6c5bda81eb4070ac2ac6f5cbfddfa7e2.pdf
University of Guilan Computational Sciences and Engineering 2783-2503 1 2 2021 09 01 Transient Thermal Analysis of Convective-Radiative Moving Fin under the Influences of Magnetic Field and Time-dependent Boundary Condition 139 152 5134 10.22124/cse.2021.20588.1019 EN Gbeminiyi Sobamowo Department of Mechanical Engineering, University of Lagos, Nigeria Ahmed Amoo Yinusa Department of Mechanical Engineering, University of Lagos, Nigeria Oluwatoyin P Popoola Department of Biomedical Engineering, University of Lagos, Nigeria M. A. Waheed Department of Mechanical Engineering, Federal University of Agriculture, Ogun State, Nigeria. Journal Article 2021 09 13 In this paper, unsteady thermal scrutiny of radiative-convective moving fin considering the influences of magnetic field and time-dependent boundary conditions is explored via Laplace transform method. The analytical solutions obtained are employed in the investigation of the impacts of Hartmann number, Peclet number, radiative and convective parameters on the transient thermal performance and effectiveness in the moving fin. The research outcomes establish that an increase in convective and porosity terms generates a corresponding increase in the fin’s heat transfer rate. This consequently augments the fin’s efficiency. Correspondingly, an increase in increases the magnitude of temperature distribution within the fin. It is also found that increasing the results in an increase in material mobility rate. Meanwhile, the exposure period of the material to its surrounding environmental conditions diminishes while fin losses more surface heat, hence the temperature of the fin intensifies. Finally, an increase in the fin’s internal heat generation and thermal conductivity reduces heat transfer rate. Thus, the controlling terms of the fin during operation should be prudently selected to make sure that it retains its principal function of heat removal from the main surface. Convective-radiative fin Moving fin Magnetic field Time-dependent boundary condition Laplace transform https://cse.guilan.ac.ir/article_5134_a7cc77025eff4bbdeb0cbcb5a53cfa87.pdf
University of Guilan Computational Sciences and Engineering 2783-2503 1 2 2021 09 01 Micromechanical determination of elastic modulus and Poisson's ratio of graphene/polymer nanocomposites 153 159 5120 10.22124/cse.2021.20826.1020 EN Jamaloddin Jamali American University of the Middle East Mohammad Kazem Hassanzadeh-Aghdam Department of Engineering Science, Faculty of Technology and Engineering, East of Guilan, University of Guilan, Rudsar-Vajargah, Iran Journal Article 2021 10 13 The elastic modulus and Poisson’s ratio of polymer matrix nanocomposites (PMNCs) filled with graphene nanoplatelets (GNPs) are determined using an analytical micromechanical model. It is assumed that the GNPs are uniformly dispersed and randomly oriented into the polymer matrix. Due to the folded and wrinkled structure of GNPs, the effect of their flatness ratio on the elastic properties is investigated. Moreover, the micromechanical model captures the creation of interfacial region between the graphene and polymer matrix. The results show that addition of graphene particles into the polymer matrix can enhance the nanocomposite elastic modulus. Poisson’s ratio of polymer matrix increases with the increase of graphene content. It is observed that the elastic properties are decreased by the GNP non-flatness structure. Also, the material and dimensional characteristics of interfacial region affects the elastic modulus and Poisson’s ratio of GNP-reinforced PMNCs. The model predictions agree very well with the experimental data. Nanocomposite Graphene elastic modulus Poisson’ s ratio Flatness https://cse.guilan.ac.ir/article_5120_dec717985c5665120af8521f2a281971.pdf
University of Guilan Computational Sciences and Engineering 2783-2503 1 2 2021 09 01 On the Conditions of Similar Analytical Solutions of Homotopy Perturbation, Taylor Series and Differential Transformation Methods 161 187 5132 10.22124/cse.2021.20587.1018 EN Gbeminiyi Sobamowo University of Lagos, Nigeria Journal Article 2021 09 13 The developments of approximate analytical solutions to nonlinear differential equations have been achieved through the use of various approximate analytical and semi-analytical methods. These methods provide different analytical expressions which give difference values for the same input data and variables. However, under some certain conditions, the methods provide similar analytical expressions, thereby give the same values for the same input data and variables. Therefore, in this work, the conditions of similar analytical solutions by homotopy perturbation, differential transformation and Taylor series methods for linear and nonlinear differential equations are investigated. From the analysis, it is established that if some specific values or functions are assigned to the auxiliary parameters in the homotopy perturbation method, the approximate analytical solutions provided by homotopy perturbation method is entirely similar to the approximate analytical solutions given by differential transformation and Taylor series methods. Also, it is found that the results of Taylor series method when expansion is at the center, is exactly the same to the results of homotopy perturbation and differential transformation methods. It is hoped that this work will great assist and enhance the understanding of mathematical solutions providers and enthusiasts as it provides better insight into finding analytical solutions to linear and nonlinear differential equations. Nonlinear differential equations Analytic solutions Homotopy perturbation method Differential Transformation Method Taylor' s Series Expansion Methods https://cse.guilan.ac.ir/article_5132_121d787486a95f0bc2591b3eb6cb2d95.pdf