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| 1 | Melting Heat in Radiative Flow of Carbon Nanotubes with Homogeneous-Heterogeneous Reactions显示文摘The present article provides mathematical modeling for melting heat and thermal radiation in stagnationpoint flow of carbon nanotubes towards a nonlinear stretchable surface of variable thickness. The process of homogeneousheterogeneous reactions is considered. Diffusion coefficients are considered equal for both reactant and autocatalyst.Water and gasoline oil are taken as base fluids. The conversion of partial differential system to ordinary differential system is done by suitable transformations. Optimal homotopy technique is employed for the solutions development of velocity, temperature, concentration, skin friction and local Nusselt number. Graphical results for various values of pertinent parameters are displayed and discussed. Our results indicate that the skin friction coefficient and local Nusselt number are enhanced for larger values of nanoparticles volume fraction. | Tasawar Hayat Khursheed Muhammad Taseer Muhammad Ahmed Alsaedi | 2018 | Communications in Theoretical Physics2018，69，4： | 4 |
| 2 | Darcy–Forchheimer Three-Dimensional Flow of Williamson Nanofluid over a Convectively Heated Nonlinear Stretching Surface显示文摘The present study elaborates three-dimensional flow of Williamson nanoliquid over a nonlinear stretchable surface. Fluid flow obeys Darcy–Forchheimer porous medium. A bidirectional nonlinear stretching surface generates the flow. Convective surface condition of heat transfer is taken into consideration. Further the zero nanoparticles mass flux condition is imposed at the boundary. Effects of thermophoresis and Brownian diffusion are considered. Assumption of boundary layer has been employed in the problem formulation. Convergent series solutions for the nonlinear governing system are established through the optimal homotopy analysis method(OHAM). Graphs have been sketched in order to analyze that how the velocity, temperature and concentration distributions are affected by distinct emerging flow parameters. Skin friction coefficients and local Nusselt number are also computed and discussed. | Tasawar Hayat Arsalan Aziz Taseer Muhammad Ahmed Alsaedi | 2017 | Communications in Theoretical Physics2017，67，9： | 3 |
| 3 | Darcy-Forchheimer relation in Casson type MHD nanofluid flow over non-linear stretching surface显示文摘Present article aims to discuss the characteristics of Casson type nanofluid maintained to flow through porous medium over non-linear stretching surface in the perspective of heat and mass transfer developments.A Casson type incompressible viscous nanofluid passes through the given porous medium via Darcy-Forchheimer relation.Slip boundary conditions are used for velocity,temperature and concentration of the nanoparticles.Brownian diffusion and thermophoresis is attended.An induced magnetic field effect is involved to accentuate the thermo-physical characteristics of the nanofluid.The model incorporates boundary layer formulations and small magnetic Reynolds for practical validity.A fourth order Runge-Kutta(RK)scheme is enforced to solve the system numerically.Graphs are prepared for various progressive values of non-dimensionalized parameters whereas;variation in wall drag factor,heat and mass transfer rates is analyzed through numerical data.Results indicate that momentum boundary layer reduces for stronger inertial impact and the resistance offered by the porous media to the fluid flow.Temperature is found as a progressive function for the Brownianmotion factor and thermophoresis.The magnitude of wall drag factor,heat transfer and masstransfer rates shows reduction for progressive values of slip parameters. | Ghulam Rasool Ali J.Chamkha Taseer Muhammad Anum Shafiq Ilyas Khan | 2020 | Propulsion and Power Research2020，9，2： | 2 |
| 4 | 碳纳米管指数拉伸曲面上Darcy-Forchheimer流动的数值处理(英文)显示文摘本文对碳水纳米流体的二维流动进行了数值模拟。流体是由指数扩展曲面引起的。本文用Darcy-Forchheimer方法描述了渗透空间中的黏性液体。通过适当的变换,将偏微分方程的后续排列转化为常微分框架。采用NDSolve程序建立了控制框架的数值排布。考察了不同参数对温度和速度的影响,并对表面摩擦和传热速率进行监测。 | Tasawar HAYAT Farwa HAIDER Taseer MUHAMMAD Ahmed ALSAEDI | 2019 | Journal of Central South University2019，26，4： | 1 |
| 5 | Significance of activation energy and Wu's slip features in Cross nanofluid with motile microorganisms显示文摘The current article investigates the impact of the bioconvection in an unsteady flow of magnetized Cross nanofluid with gyrotactic microorganisms and activation energy over a linearly stretched configuration.The analysis has been performed by utilizing the realistic Wu's slip boundary and zero mass flux conditions.The effects of nonlinear thermal radiation and the activation energy are also addressed.The governing flow equations are deduced to a dimensionless form by considering suitable transformations which are numerically targeted via a shooting algorithm.The physical visualization of each physical parameter governing the flow problem has been displayed graphically for distribution of velocity,temperature,concentration and motile microorganisms.The numerical treatment for the variation of skin friction coefficient,local Nusselt number,local Sherwood number and motile density number is performed in tabular forms. | Sami Ullah Khan Hassan Waqas Taseer Muhammad Muhammad Imran Malik Zaka Ullah | 2020 | Communications in Theoretical Physics2020，72，10： | 0 |
| 6 | Thermo-bioconvection transport of nanofluid over an inclined stretching cylinder with Cattaneo–Christov double-diffusion显示文摘In this paper,Newtonian nanofluid flow is observed under the effects of the magnetic field,activation energy and motile microorganisms over an inclined stretchable cylinder.The magnificent aspects of nanoliquid are demonstrated by enduring the Brownian motion and thermophoresis diffusion features.Nonlinear higher order partial differential equations are transformed into first-order ordinary differential equations with suitable similarity variables.The attained sets of governing equations are then cracked by bvp4 c procedure in MATLAB mathematical software.The numerical and graphical outcomes of controlling parameters such as Prandtl number,mixed convection,activation energy,thermophoresis,Brownian parameter,Biot number,Lewis number,Peclet number and motile concentration parameter against the velocity,temperature,volumetric concentration and motile concentration of nanoparticles of the fluid are discussed.The velocity is enhanced with the growth valuation in mixed convection and decay by rising variation of buoyancy ratio parameter,magnetic parameter and bio-convective Rayleigh parameter.The evolution in motile microorganisms is due to the increasing values of microorganisms Biot number.The presented data can be helpful in enhancement of manufacturing processes,biomolecules,extrusion systems applications and energy production improvement. | Hassan Waqas Umair Manzoor Taseer Muhammad Sajjad Hussain | 2021 | Communications in Theoretical Physics2021，73，7： | 0 |
| 7 | Numerical computation of Brownian motion and thermophoresis effects on rotational micropolar nanomaterials with activation energy显示文摘The current article investigates the numerical study of the micropolar nanofluid flow through a 3D rotating surface.This communication may manipulate for the aim such as the delivery of the drug,cooling of electronic chips,nanoscience and the fields of nanotechnology.The impact of heat source/sink is employed.Brownian motion and thermophoresis aspects are discussed.The rotating sheet with the impacts of Darcy-Forchheimer law is also scrutinized.Furthermore,the influence of activation energy is analyzed in the current article.The numerical analysis is simplified with the help of befitted resemblance transformations.The succor of the shooting algorithm with built-in solver bvp4c MATLAB software is used for the numerical solution of nonlinear transformed equations.The consequences of different physical factors on the physical engineering quantities and the subjective fields were examined and presented.According to outcomes,it can be analyzed that the flow profile declined with the rotational parameter.It is observed that angular velocity diminishes via a larger porosity parameter.Furthermore,the temperature gradient is declined via a larger magnitude of the Prandtl number.The heat transfer is enhanced in the occurrence of Brownian motion.The activations energy parameter causes an increment in the volumetric concentration field.Moreover,the local Nusselt number is reduced via a greater estimation of the porosity parameter. | Hassan Waqas Shan Ali Khan Bagh Ali Dong Liu Taseer Muhammad Enran Hou | 2023 | Propulsion and Power Research2023，12，3： | 0 |
| 8 | Predicting and validating the load-settlement behavior of large-scale geosynthetic-reinforced soil abutments using hybrid intelligent modeling显示文摘Settlement prediction of geosynthetic-reinforced soil(GRS)abutments under service loading conditions is an arduous and challenging task for practicing geotechnical/civil engineers.Hence,in this paper,a novel hybrid artificial intelligence(AI)-based model was developed by the combination of artificial neural network(ANN)and Harris hawks’optimisation(HHO),that is,ANN-HHO,to predict the settlement of the GRS abutments.Five other robust intelligent models such as support vector regression(SVR),Gaussian process regression(GPR),relevance vector machine(RVM),sequential minimal optimisation regression(SMOR),and least-median square regression(LMSR)were constructed and compared to the ANN-HHO model.The predictive strength,relalibility and robustness of the model were evaluated based on rigorous statistical testing,ranking criteria,multi-criteria approach,uncertainity analysis and sensitivity analysis(SA).Moreover,the predictive veracity of the model was also substantiated against several large-scale independent experimental studies on GRS abutments reported in the scientific literature.The acquired findings demonstrated that the ANN-HHO model predicted the settlement of GRS abutments with reasonable accuracy and yielded superior performance in comparison to counterpart models.Therefore,it becomes one of predictive tools employed by geotechnical/civil engineers in preliminary decision-making when investigating the in-service performance of GRS abutments.Finally,the model has been converted into a simple mathematical formulation for easy hand calculations,and it is proved cost-effective and less time-consuming in comparison to experimental tests and numerical simulations. | Muhammad Nouman Amjad Raja Syed Taseer Abbas Jaffar Abidhan Bardhan Sanjay Kumar Shukla | 2023 | Journal of Rock Mechanics and Geotechnical Engineering2023，15，3： | 0 |
| 9 | Asymptomatic dengue infection in adults of major cities of Pakistan显示文摘Objective: To determine the asymptomatic dengue infection in adults of Pakistani population.Methods: This study was conducted in five major cities(Islamabad, Karachi, Lahore,Multan, and Peshawar) of Pakistan.A total of 5 230 adults aged 18 years and above without a history of dengue fever at any point in their life were enrolled from participating laboratories.Those who were confirmed for dengue previously were excluded.Of the total, 62.6%(n = 3 276) were male with an average age of 34.6 years.Participants were briefed about the objectives of the study, and written consent was obtained to perform dengue Ig G test using enzyme linked immunosorbent assay.The brief information related to age, gender and area was also taken on proforma.Results: Overall 32.3%(n = 1 691) was having asymptomatic dengue infection which was 67.5%(n = 756) in Karachi followed by 39.1%(n = 391) in Islamabad, 29.9%(n =316) in Lahore and 21%(n = 228) in Peshawar and none from Multan.More males were affected with asymptomatic dengue infection than females.The asymptomatic dengue infection was significantly higher in different cities; however, there was no significant difference with respect to age groups.Conclusions: The asymptomatic dengue infection is higher in cities i.e.Karachi,Islamabad and Lahore which are at risk of developing secondary dengue infections.There is a need of awareness among the public about secondary dengue infection. | Ibrar Rafique Muhammad Arif Nadeem Saqib Muhammad Arif Munir Huma Qureshi Ijaz-ul-Haq Taseer Rizwan Iqbal Waqaruddin Ahmed Tasleem Akhtar Rizwanullah | 2017 | Asian Pacific Journal of Tropical Medicine2017，10，10： | 0 |
| 10 | Improving shipboard electronics cooling system by optimizing the heat sinks configuration显示文摘With the increase of high-power electrical components in modern ships,especially fully electric ships with electric propulsion drive(EPD),the cooling of EPD electrical components has become particularly important.Providing optimal configurations for heat sinks with high thermal efficiency plays an essential role in this regard.A new technique for improving the efficiency of heat sinks is the utilization of perforated fins.This study examined the effects of perforation geometry(shape and size)on laminar airflow flow and heat transfer characteristics over a perforated plate-fin heat sink.Three-dimensional simulations were conducted using the finite-volume scheme based on the SIMPLE algorithm.In this research,the effects of perforation shape and size on various parameters,e.g.,total drag force,average Nusselt number,perforated fin efficiency(PFE),heat transfer performance enhancement(HTPE),and fin optimization factor(η)were evaluated.The results confirmed that at a specific heat transfer surface area for perforated fins,the highest efficiency is achieved by circular perforations.In contrast,the square perforations due to geometric similarity to rectangular fins could reach the maximum size.Consequently,fins with square perforations could achieve the most optimal configuration.Also,results showed that for a constant perforations size,change in perforations shape improves HTPE,PFE,andηby more than 40%,45%,and 110%,respectively.Also,by modifying perforations size for a specified shape,an increment of more than 35%,40%,and 150%is observed in HTPE,PFE,andη,respectively. | Hamid Maleki Mohammad Reza Safaei Arturo S.Leon Taseer Muhammad Truong Khang Nguyen | 2022 | Journal of Ocean Engineering and Science2022，7，5： | 0 |
| 11 | Flow and Melting Thermal Transfer Enhancement Analysis of Alumina,Titanium Oxide-Based Maxwell Nanofluid Flow Inside Double Rotating Disks with Finite-Element Simulation显示文摘The energy produced by the melting stretching disks surface has a wide range of commercial applications,including semi-conductor material preparation,magma solidification,permafrost melting,and frozen land refreezing,among others.In view of this,in the current communication we analyzed magnetohydrodynamic flow ofMaxwell nanofluid between two parallel rotating disks.Nanofluids are important due to their astonishing properties in heat conduction flows and in the enhancement of electronic and manufacturing devices.Furthermore,the distinct tinysized particles Al_(2)O_(3)and TiO_(2)in theMaxwell water-based fluid for enhancing the heat transfer rate are analyzed.The heat equation is developed in the occurrence of thermal radiation.The influences of melting impacts are incorporated.The mathematical model is developed in the form of partial differential expressions then converted to ordinary differential equations by employing tool of similarity variables.Finite element method(FEM)is chosen for solving the nonlinear governing ordinary differential equations(ODEs)with necessary conditions.The consequence of flow parameters against the velocity profiles and heat transport field is considered.The noted novelty of this communication is to discuss the thermal transfer of Maxwell nanofluid model through double stretching disks with thermal radiation and melting phenomenon.Further,Al_(2)O_(3)/water and TiO_(2)/water are considered in the modeling. | Liangliang Chen Madeeha Tahir Sumeira Yasmin Taseer Muhammad Muhammad Imran Fenghua Liu | 2022 | Computer Modeling in Engineering & Sciences2022，，3： | 0 |
| 12 | Significance of Darcy-Forchheimer Porous Medium in Nanofluid Through Carbon Nanotubes显示文摘This article manages Darcy-Forchheimer 3D flow of water based carbon nanomaterial (CNTs). A bidirectional nonlinear stretchable surface has been utilized to make the flow. Disturbance in permeable space has been represented by Darcy Forchheimer (DF) expression. Heat transfer mechanism is explored through convective heating.Outcomes for SWCNT and MWCNT have been displayed and compared. The reduction of partial differential framework into nonlinear common differential framework is made through reasonable variables. Optimal series scheme is utilized for arrangements advancement of associated flow issue. Optimal homotopic solution expressions for velocities and temperature are studied through graphs by considering various estimations of physical variables. Moreover surface drag coefficients and heat transfer rate are analyzed through plots. | Taseer Muhammad Dian-Chen Lu B.Mahanthesh Mohamed R.Eid Muhammad Ramzan Amanullah Dar | 2018 | Communications in Theoretical Physics2018，69，9： | 0 |
| 13 | 基于二元化学反应和Arrhenius活化能的Darcy-Forchheimer流体三维旋转数值模拟(英文)显示文摘研究了旋转框架和活化能存在下的三维Darcy-Forchheimer纳米流动。考虑了热对流和质量交换,保留了布朗色散和热泳的新特征。通过合理的变换实现了偏微分系统(PDES)向非线性常微分系统(ODES)的转换。选择NDSolve的边界条件,计算了控制差分方程。重点讨论了几个相关参数下的热场和浓度分布。用数值来描述表面阻力系数、热量传递和质量交换率等物理量。结果表明,孔隙度和Forchheimer数对热场和浓度场的影响是相似的。随着孔隙度的增大和Forchheimer数的增加,温度升高和相应的热层厚度增大。温度场和浓度场随着旋转角的增大而呈现相似的变化趋势。热和浓度Biot数对温度场和浓度场的影响在本质上是相似的。较高的Prandtl和Schmidt数对应较强的温度场和浓度场。较大的无量纲活化能、温差和拟合速率常数对应较弱的浓度场。布朗运动参数对温度和浓度的作用是相反的,而热泳参数的作用是相似的。 | Tasawar HAYAT Arsalan AZIZ Taseer MUHAMMAD Ahmed ALSAEDI | 2019 | Journal of Central South University2019，26，5： | 0 |
| 14 | Three-dimensional flow of Powell–Eyring nanofluid with heat and mass flux boundary conditions显示文摘This article investigates the three-dimensional flow of Powell–Eyring nanofluid with thermophoresis and Brownian motion effects. The energy equation is considered in the presence of thermal radiation. The heat and mass flux conditions are taken into account. Mathematical formulation is carried out through the boundary layer approach. The governing partial differential equations are transformed into the nonlinear ordinary differential equations through suitable variables. The resulting nonlinear ordinary differential equations have been solved for the series solutions. Effects of emerging physical parameters on the temperature and nanoparticles concentration are plotted and discussed. Numerical values of local Nusselt and Sherwood numbers are computed and examined. | Tasawar Hayat Ikram Ullah Taseer Muhammad Ahmed Alsaedi Sabir Ali Shehzad | 2016 | Chinese Physics B2016，25，7： | 0 |
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