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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 tauseef 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

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 tauseef 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–ZnFe 2 O 4 , CoFe 2 O 4 , Fe 3 O 4 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 (Fe 3 O 4 ) 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 pr

关键词：热流动光滑交通水动力学表面温度数学模型集中分析热转移

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 tauseef 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 problem 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 subsequently 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 proposed 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：种群模型年龄结构非线性剩余函数结构问题生物科学校正功能人口模型

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 tauseef 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 tauseef 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 tauseef 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

Novel Analytical Thermal Performance Rate Analysis in ZnO-SAE50 Nanolubricant: Nonlinear Mathematical Model

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Computers, Materials & Continua 2021年第4期67卷 477-489页

作者： Adnan Abbasi Umar Khan Naveed Ahmed syed tauseef mohyud-din Ilyas Khan El-Sayed M.Sherif Department of Mathematics Mohi-ud-Din Islamic UniversityNerian SharifAJ&K12080Pakistan Department of Mathematics and Statistics Hazara UniversityMansehra21120Pakistan Department of Mathematics HITEC UniversityTaxilaCantt47070Pakistan University of Multan Multan66000Pakistan Department of Mathematics and Statistics Ton Duc Thang UniversityHo Chi Minh City72915Vietnam Department of Mechanical Engineering College of EngineeringKing Saud UniversityAl-Riyadh11421Saudi Arabia Department of Physical Chemistry Electrochemistry and Corrosion LaboratoryNational Research CentreCairo12622Egypt

The investigation of local thermal transport rate in the nanolubricants is *** lubricants are broadly used in environmental pollution,mechanical engineering and in the paint industry due to high thermal performance ***,thermal transport in ZnO-SAE50 nanolubricant under the impacts of heat generation/absorption is *** colloidal suspension is flowing between parallel stretching disks in which the lower disk is positioned at z=0 and upper disk apart from distance *** problem is transformed in dimensionless version via described similarity *** the next stage,an analytical technique(VPM)is implemented for the solution *** graphical results against multiple flow parameters were furnished over the region of interest and explained *** is imperative to mention that the results are plotted for ZnO-SAE50 and conventional liquid as ***,rapid motion of the fluid is perceived against high Reynolds andγ*** wall shear stresses at the upper end rises for multiple Reynolds andγwhile;decrement is detected at the lower *** significant contribution of an internal heat source is noted for thermal performance rate at the upper ***,the local heat transport rate declines at the lower *** altering Reynolds number,prompt heat transfer rate is gained at the upper disk and increasing behavior of the local heat transport rate is slow at the lower *** the study,it is concluded that the nanolubricants have high thermal ***,such fluids are reliable to use in above stated areas.

关键词： Zno-SAE50 nanolubricant thermal performance local heat transport numerical algorithm skin friction

磁辐射3D非稳态流动体系的传热强化:Al和γ-Al2O3纳米粒子的对比研究（英文）

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Journal of Central South University 2019年第5期26卷 1233-1249页

作者： Naveed AHMED ADNAN Umar KHAN syed Zulfiqar Ali ZAIDI Imran FAISAL syed tauseef mohyud-din Department of Mathematics Faculty of SciencesHITEC UniversityTaxila CanttPakistan Department of Mathematics Mohi-ud-Din Islamic UniversityNerian SharifAzad Jammu and KashmirPakistan Department of Mathematics and Statistics Hazara UniversityMansehraPakistan Department of Mathematics COMSATS University IslamabadAbbottabad CampusPakistan Department of Mathematics Taibah UniversityMedinaSaudi Arabia

本文研究了水和乙二醇基纳米流体的胶体性质。考虑了洛伦兹力和热辐射的影响,通过相似变化,完成了控制方程的无量纲转化。然后,应用龙格-库塔法,对流动模型的非线性特性进行数值分析,对有关流速、温度、流线、等温线等流动参数的特性进... 详细信息

本文研究了水和乙二醇基纳米流体的胶体性质。考虑了洛伦兹力和热辐射的影响,通过相似变化,完成了控制方程的无量纲转化。然后,应用龙格-库塔法,对流动模型的非线性特性进行数值分析,对有关流速、温度、流线、等温线等流动参数的特性进行图解分析。结果表明,洛伦兹力有利于旋转速度,不利于其他旋转参数。体积分数和热辐射参数对Al和γ-Al2O3纳米流体的温度有正相关强化作用。此外,对于较高的旋转参数,研究其反向流动问题。与文献结果进行了比较,结果显示具有较高的吻合度。旋转有利于流体的流动速度,辐射流体越多,流体温度越高,而且体积分数的增加提高了热导率和电导率。

关键词：传统流体铝和铝氧化物磁场热辐射 Runge-Kutta方案剪切应力局部热传递速率

A Comparative Study of Analytical Solutions to the Coupled Van-der-Pol’s Non-linear Circuits Using the He’s Method(HPEM)and(BPES)

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Circuits and Systems 2011年第3期2卷 196-200页

作者： Huseyin Kocak Ahmet Yildirim Dahong Zhang Karem Boubaker syed tauseef mohyud-din Department of Mathematics Ege UniversityBornova–IzmirTurkey Department of Physics South China UniversityGuangzhouChina Ecole Superieure des Sciences et Techniques de Tunis University of TunisTunisTunisia Department of Basic Sciences HITEC UniversityTaxila CanttPakistan

In this paper, the He’s parameter-expanding method (HPEM) and the 4q-Boubaker Polynomials Expansion Scheme (BPES) are used in order to obtain analytical solutions to the non-linear modified Van der Pol’s oscillating circuit equation. The resolution protocols are applied to the ordinary Van der Pol equation, which annexed to conjoint delayed feedback and delay-related damping terms. The results are plotted, and compared with exact solutions proposed elsewhere, in order to evaluate accuracy.

关键词： Van-der-Pol’s Oscillating Circuit Delayed Feedback Damping BPES HPEM Exact Solutions Electrical Triode-Valve Circuit