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A study of heat and mass transfer on magnetohydrodynamic(MHD)flow of nanoparticles

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Propulsion and Power Research 2018年第1期7卷 72-77页

作者： syed ta.seef mohyud-din Umar Khan Naveed Ahmed Muhammad Mehdi Rashidi Department of Mathematics Faculty of SciencesHITEC UniversityTaxila CanttPakistan Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems Tongji UniversityShanghai 201804China Center for Research(CFR) University of Islamabad(UoI)IslamabadPakistan Department of Mathematics COMSATS Institute of Information TechnologyAbbottabadPakistan

Investigation of the flow,heat and mass transfer of a nanofluid over a suddenly moved flat plate is presented using Buongiorno's *** study is different from some of the previous studies as the effects of Brownian motion and thermophoresis on nanoparticles volume fraction are passively controlled on the boundary rather than *** partial differential equations governing the flow are reduced to a system of nonlinear ordinary differential *** similarity transforms are used for this purpose.A well-known numerical scheme called Runge-Kutta-Fehlberg method coupled with shooting procedure has been used to find the solution of resulting system of *** on the effects of different emerging parameters is provided using graphical aid.A table is also given that provides the results of different parameters on local Nusselt and Sherwood *** passive control model can be used to control the boundary layer thickness as well as the rate of mass transfer at the wall.

关键词： Nanofluid Brownian motion Thermophoresis Nusselt number Sherwood number

A conformable mathematical model for alcohol consumption in Spain

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International Journal of Biomathematics 2019年第5期12卷 203-219页

作者： Aqsa Nazir Naveed Ahmed Umar Khan syed ta.seef mohyud-din Pepartment of Mathefnaticst Faculty of HITEC University Taxila CanttPakistan Department of Mathematics and Statistics Hazara University MansehruPakistan

A study on the conformable model of alcohol consumption in Spain has been *** the proposed model,the existence as well as the uniqueness of the solution has been discussed with the help of fixed-point *** analytical technique,Variational Iteration Method (VIM),has been used to obtain the solution to the governing system of differential *** the help of suitable plots,the role of fractional order derivative has been *** decreasing values of fractional order derivative,decrease in the number of non-consumers and non-risk consumers has been *** increasing the value of fractional order derivative,a sharp decrease can be seen in the compartment of *** agreement between the current study and the already existing studies,with ordinary derivatives,has also been pointed out.

关键词： Alcohol consumption nonlinear differential equations initial value problem conformable derivative uniqueness fixed-point postulate VIM

A study of nonlinear biochemical reaction model

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International Journal of Biomathematics 2016年第5期9卷 121-129页

作者： Muhammad Asad Iqbal syed ta.seef mohyud-din Bandar Bin-Mohsin Department of Mathematics HITEC University Taxila Pakistan Department of Mathematics College of Science King Saud University Riyadh Saudi Arabia

The present study deals with the introduction of an alteration in Legendre wavelets method by availing of the Picard iteration method for system of differential equations and named it Legendre wavelet-Picard method （LWPM）. Convergence of the proposed method is also discussed. In order to check the competence of the proposed method, basic enzyme kinetics is considered. Systems of nonlinear ordinary differential equations are formed from the considered enzyme-substrate reaction. The results obtained by the proposed LWPM are compared with the numerical results obtained from Runge-Kutta method of order four （RK-4）. Numerical results and those obtained by LWPM are in excellent conformance, which would be explained by the help of table and figures. The proposed method is easy and simple to implement as compared to the other existing analytical methods used for solving systems of differential equations arising in biology, physics and engineering.

关键词： Legendre wavelets method Picard iteration method nonlinear biochemical reaction model Runge- Kutta method of order four.

Analysis of travelling wave solutions of double dispersive sharma-tasso-Olver equation

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Journal of Ocean Engineering and Science 2024年第5期9卷 461-474页

作者： Kamruzzaman Khan Henk Koppelaar M.Ali Akbar syed ta.seef mohyud-din Department of Mathematics Pabna University of Science and TechnologyPabna 6600Bangladesh Fac.of Electrical Eng. Mathematics and Comp.ScienceUniversity of DelftNetherlands Department of Applied Mathematics University of RajshahiRajshahi 6205Bangladesh Department of Mathematics HITEC University Taxila CanttPakistan School of Science and Technology University of New EnglandArmidaleNSW 2351Australia

Travelling wave solutions have been played a vital role in demonstrating the wave character of nonlinear problems arising in the field of ocean engineering and *** describe the propagation of the nonlinear wave phenomenon in the ocean(for example,wind waves,tsunami waves),a variety of evolution equations have been suggested and investigated in the existing *** paper studies the dynamic of travelling periodic and solitary wave behavior of a double-dispersive non-linear evolution equation,named the Sharma-tasso-Olver(STO)*** evolution equations with double dispersion enable us to describe nonlinear wave propagation in the ocean,hyperplastic rods and other mediums in the field of science and *** analyze the wave solutions of this model using a combination of numerical simulations and Ansatz *** analysis shows that the travelling wave solutions involve a range of parameters that displays important and very interesting properties of the wave *** relevance of the parameters in the travelling wave solutions is also *** simulating numerically,we demonstrate how parameters in the solutions influence the phase speed as well as the travelling and solitary ***,we discuss instantaneous streamline patterns among the obtained solutions to explore the local direction of the components of the obtained solitary wave solutions at each point in the coordinate(x,t).

关键词： Travelling wave Solitary wave Streamline Enhanced(G'/G)-expansion method STO equation

Exploration of uniform heat flux on the flow and heat transportation of ferrofluids along a smooth plate： Comparative investigation

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International Journal of Biomathematics 2018年第4期11卷 57-75页

作者： Muhammad Usman Muhammad Hamid syed ta.seef mohyud din Asif Waheed Wei Wang School of Mathematical Sciences Peking University Beijing 100871 P. R. China Department of Mathematics Faculty of Sciences HITEC University Taxila Cantt Pakistan Department of Mathematics COMSATS Institute of Information Technology Attock Pakistan

The paper is devoted to a new extension in Gegenbauer wavelet method （GWM） to investigate the transfer of heat and MHD boundary-layer flow of ferrofluids beside a flat plate with velocity slip. A homogenous model study is conducted in which we assumed the heat transfer and forced convective flow of ferrofluids along a flat plate with a uniform wall heat flux. In the direction of transverse to plate, a magnetic field is imposed. Three various magnetic nanoparticle types including Mn-ZnFe204, CoFe204, Fe3O4 are incorporated inside the base fluid. Two types of base fluids （water and kerosene） with bad thermal conductivity as compared to nanoparticles of solid magnetic have been assumed. The mathematical model is tackled via modified Gegenbauer wavelet method （MGWM）. A simulation is accomplished for individual ferrofluid mixture by assuming the prevailing impacts of uniform and slip heat fluxes. The variation of heat transfers and skin friction were also observed at the surface of the plate and we analyzed the better heat transfer for every mixture. Kerosene-based magnetite （Fe304） delivers the better rate of heat transfer at wall due to its association with the kerosene-based Mn-Zn and cobalt ferrites. The slip velocity and magnetic field effects on the temperature, dimensionless velocity, rate of heat transfer and skin friction are examined for various magnetic nanoparticles inside the kerosene oil and water. We observed that the primary influence of magnetic field reduces the dimensionless surface temperature and accelerates the dimensionless velocity as compared to the hydrodynamic case, thus enhancing the rate of heat transfer and skin friction ferrofluids. Moreover, a detailed evaluation of outcomes obtained by MGWM, already published work and numerical RK-4 were found to be in excellent agreement. The error and convergence analysis are presented. Comparison of results,graphical plots, error and convergence analysis reveal the appropriateness of proposed method. T

关键词： Gegenbauer polynomials collocation method ferrofluids heat flux numericalsolution.

A study of nonlinear age-structured population models

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International Journal of Biomathematics 2016年第6期9卷 211-223页

作者： syed ta.seef mohyud-din A. Waheed M. M. Ra.shidi Department of Mathematics Faculty of Sciences HITEC University Taxila Cantt Pakistan Department of Mathematics COMSATS Institute of Information Technology Attock Pakistan Shanghai Key Lab of Vehicle Aerodynamicsand Vehicle Thermal Management Systems Tongji University 3800 Cao An Road Jiading Shanghai 201803 P. R. China

This paper presents a novel analysis for the solution of nonlinear age-structured prob- lem which is of extreme importance in biological sciences. The presented model is very useful but quite complicated. Modified variational iteration method （MVIM） coupled with auxiliary parameter is used to cope with the complexity of the model which subse- quently shows better results as compared to some existing results available in literature. Furthermore, an appropriate way is used for the identification of auxiliary parameter by means of residual function. Numerical examples are presented for the analysis of the pro- posed algorithm. Graphical results along with the discussions re-confirm the efficiency of proposed algorithm. The work proposes a new algorithm where He＇s polynomials and an auxiliary parameter are merged with correction functional. The suggested scheme is implemented on nonlinear age-structured population models. Graphs are plotted for the residual function that reflects the accuracy and convergence of the presented algorithm.

关键词： Age-structured population models nonlinear problems modified variationaliteration method auxiliary parameter correction functional.

Second Law Analysis of Magneto Radiative GO-MoS_(2)/H_(2)O–(CH_(2)OH)_(2) Hybrid Nanofluid

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Computers, Materials & Continua 2021年第7期68卷 213-228页

作者： Adnan Umar Khan Naveed Ahmed syed ta.seef mohyud-din Dumitru Baleanu Kottakkaran Sooppy Nisar Ilyas Khan Department of Mathematics Mohi-ud-Din Islamic UniversityNerian Sharif AJ&K12080Pakistan Department of Mathematics and Statistics Hazara UniversityMansehra21120Pakistan Department of Mathematics Faculty of Sciences HITEC UniversityTaxila Cantt47070Pakistan University of Multan Multan66000Pakistan Department of Mathematics Cankaya UniversityAnkaraTurkey Institute of Space Sciences Magurele077125Romania Department of Medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan Department of Mathematics College of Arts and SciencesPrince Sattam bin Abdulaziz UniversityWadiAldawaser11991Saudi Arabia Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh City72915Vietnam

Entropy Generation Optimization(EGO)attained huge interest of scientists and researchers due to its numerous applications comprised in mechanical engineering,air conditioners,heat engines,thermal machines,heat exchange,refrigerators,heat pumps and substance mixing ***,the study of radiative hybrid nanofluid(GO-MoS_(2)/C_(2)H_(6)O_(2)–H_(2)O)and the conventional nanofluid(MoS_(2)/C_(2)H_(6)O_(2)–H_(2)O)is conducted in the presence of Lorentz *** flow configuration is modeled between the parallel rotating plates in which the lower plate is *** models which govern the flow in rotating system are solved numerically over the domain of interest and furnished the results for the temperature,entropy generation and thermophysical characteristics of the hybrid as well as conventional nanofluids,*** is examined that the thermal profile intensifies against stronger thermal radiations and magnetic *** surface of the plate is heated due to the imposed thermal radiations and magnetic field which cause the increment in the *** is also observed that the temperature declines against more rotating ***,the entropy production increases for more dissipative effects and declines against more magnetized *** conductivities of the hybrid nanofluid enhances promptly in comparison with regular liquid therefore,under consideration hybrid nanofluid is reliable for the heat ***,dominating thermal transport is perceived for the hybrid nanofluid which showed that hybrid suspension GO-MoS_(2)/C_(2)H_(6)O_(2)–H_(2)O is better for industrial,engineering and technological uses.

关键词： Heat transfer thermal radiation Entropy Generation GO-MoS_(2)hybrid nanoparticles thermophysical characteristics

Effects of viscous dissipation and slip velocity on two-dimensional and axisymmetric squeezing flow of Cu-water and Cu-kerosene nanofluids

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Propulsion and Power Research 2015年第1期4卷 40-49页

作者： Umar Khan Naveed Ahmed Mir Asadullah syed ta.seef mohyud-din Department of Mathematics Faculty of SciencesHITEC UniversityTaxila CanttPakistan COMSATS Institute of Information Technology University RoadAbbottabadPakistan

Squeezing flow of nanofluids has been taken into account under the effects of viscous dissipation and velocity *** types of base fluids are used to study the behavior of Copper nanoparticles between parallel *** ordinary differential equations governing the flow are obtained by imposing similarity transformations on conservation *** equations are solved by using an efficient analytical technique the variation of parameters method(VPM).Influences of nanoparticle concentration and different emerging parameters on flow profiles are presented graphically coupled with comprehensive discussions.A numerical solution is also sought for the sake of *** of different parameters on skin friction coefficient and Nusselt number is also discussed.

关键词： Squeezing flow Nanofluids Variation of parameters method(VPM) Velocity slip Numerical solution

Al_(2)O_(3) andγAl_(2)O_(3) Nanomaterials Based Nanofluid Models with Surface Diffusion:Applications for Thermal Performance in Multiple Engineering Systems and Industries

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Computers, Materials & Continua 2021年第2期66卷 1563-1576页

作者： Adnan Umar Khan Naveed Ahmed syed ta.seef mohyud-din Ilyas Khan Dumitru Baleanu Kottakkaran Sooppy Nisar Department of Mathematics Mohi-ud-Din Islamic UniversityNerian Sharif12080Pakistan Department of Mathematics and Statistics Hazara UniversityMansehra21120Pakistan Department of Mathematics Faculty of SciencesHITEC UniversityTaxila Cantt47070Pakistan University of Multan Multan66000Pakistan Faculty of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh City72915Vietnam Department of Mathematics Cankaya UniversityAnkaraTurkey Institute of Space Sciences Magurele077125Romania Department of Medical Research China Medical University HospitalChina Medical UniversityTaichungTaiwan Department of Mathematics College of Arts and SciencesPrince Sattam bin Abdulaziz UniversityWadi Aldawaser11991Saudi Arabia

Thermal transport investigation in colloidal suspensions is taking a significant research *** applications of these fluids are found in various industries,engineering,aerodynamics,mechanical engineering and medical sciences etc.A huge amount of thermal transport is essential in the operation of various industrial production *** is a fact that conventional liquids have lower thermal transport characteristics as compared to colloidal *** colloidal suspensions have high thermal performance due to the thermophysical attributes of the nanoparticles and the host ***,researchers focused on the analysis of the heat transport in nanofluids under diverse *** such,the colloidal analysis of H_(2)O composed byγAl_(2)O_(3)and Al_(2)O_(3)is conducted over an elastic *** governing flow models ofγAl_(2)O_(3)/H_(2)O and Al_(2)O_(3)/H_(2)O is reduced in the dimensionless form by adopting the described similarity *** colloidal models are handled by implementing the suitable numerical technique and provided the results for the velocity,temperature and local thermal performance rate against the multiple flow *** the presented results,it is shown that the velocity of Al_(2)O_(3)–H_(2)O increases promptly against a high Reynolds number and it decreases for high-volume *** significant contribution of the volumetric fraction is examined for thermal enhancement of *** temperature of Al_(2)O_(3)–H_(2)O andγAl_(2)O_(3)–H_(2)O significantly increases against a higherϕ.Most importantly,the analysis shows thatγAl_(2)O_(3)–H_(2)O has a high local thermal performance rate compared to Al_(2)O_(3)–H_(2)***,it is concluded thatγAl_(2)O_(3)–H_(2)O is a better heat transfer fluid and is suitable for industrial and technological uses.

关键词： Thermal performance Al_(2)O_(3)andγAl_(2)O_(3)nanomaterials thermophysical attributes of nanomaterials stretching cylinder suction/blowing numerical scheme nusselt number