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Lie symmetry group transformation for MHD natural convection flow of nanofluid over linearly porous stretching sheet in presence of thermal stratification

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Applied Mathematics and Mechanics(English Edition) 2012年第5期33卷 593-604页

作者： A.B.rOSMILA r.kandasamy I.MUHAIMIN research Centre for Computational Mathematics Faculty of ScienceTechnology and Human DevelopmentUniversiti Tun Hussein Onn MalaysiaJohor 86400Malaysia

The magnetohydrodynamics （MHD） convection flow and heat transfer of an incompressible viscous nanofluid past a semi-infinite vertical stretching sheet in the pres- ence of thermal stratification are examined. The partial differential equations governing the problem under consideration are transformed by a special form of the Lie symmetry group transformations, i.e., a one-parameter group of transformations into a system of ordinary differential equations which are numerically solved using the runge-Kutta-Gill- based shooting method. It is concluded that the flow field, temperature, and nanoparticle volume fraction profiles are significantly influenced by the thermal stratification and the magnetic field.

关键词： Lie symmetry group transformation nanofluid porous medium thermalstratification magnetic field

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Applied Mathematics and Mechanics(English Edition) 2010年第12期31卷 1517-1526页

作者： P.LOGANATHAN P.PUVI-ArASU r.kandasamy Department of Mathematics Anna University Erode Sengunthar Engineering College Computational Fluid Dynamics FSSWUniversiti Tun Hussein Onn Malaysia

Combined heat and mass transfer on free, forced, and mixed convection flow along a porous wedge with magnetic effect in the presence of chemical reaction is investigated. The flow field characteristics are analyzed by the runge-Kutta-Gill scheme with the shooting method as well as the local non-similarity method up to the third level of truncation, which are used to reduce the governing partial differential equations into nine ordinary differential equations. The governing boundary layer equations are converted to a dimensionless form by Falkner-Skan transformations. Because of the effect of suction/injection on the wall of the wedge with buoyancy force and variable wall temperature, the flow field is locally non-similar. Numerical calculations up to the third order level of truncation are carried out as a special case for different values of dimensionless parameters. Effects of the magnetic field strength in the presence of chemical reaction with variable wall temperature and concentration on the dimensionless velocity, temperature and concentration profiles are shown graphically.

关键词： local non-similarity suction/injection buoyancy force magnetic field wallof wedge

Thermophoresis and Brownian motion effects on boundary layer flow of nanofluid in presence of thermal stratification due to solar energy

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Applied Mathematics and Mechanics(English Edition) 2012年第6期33卷 765-780页

作者： N.ANBUCHEZHIAN K.SrINIVASAN K.CHANDrASEKArAN r.kandasamy Department of Mechanical Engineering Sri Guru Institute of Technology Department of Mechanical Engineering Anna University Department of Mechanical Engineering R.M.K.Engineering College research Centre for Computational Mathematics Faculty of ScienceTechnology and Human DevelopmentUniversiti Tun Hussein Onn Malaysia

The problem of laminar fluid flow, which results from the stretching of a vertical surface with variable stream conditions in a nanofluid due to solar energy, is in- vestigated numerically. The model used for the nanofluid incorporates the effects of the Brownian motion and thermophoresis in the presence of thermal stratification. The sym- metry groups admitted by the corresponding boundary value problem are obtained by using a special form of Lie group transformations, namely, the scaling group of transfor- mations. An exact solution is obtained for the translation symmetrys, and the numerical solutions are obtained for the scaling symmetry. This solution depends on the Lewis number, the Brownian motion parameter, the thermal stratification parameter, and the thermophoretic parameter. The conclusion is drawn that the flow field, the temperature, and the nanoparticle volume fraction profiles are significantly influenced by these param- eters. Nanofluids have been shown to increase the thermal conductivity and convective heat transfer performance of base liquids. Nanoparticles in the base fluids also offer the potential in improving the radiative properties of the liquids, leading to an increase in the efficiency of direct absorption solar collectors.

关键词： solar radiation Brownian motion nanofluid thermophoresis thermalstratification

Hall Current Effect on MHD Mixed Convection Flow Past a Semi Infinite Vertical Plate with Thermal Stratification

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Hall Current Effect on MHD Mixed Convection Flow Past a Semi...

Lateral clavicle fracture-plating options and considerations

The Sixth World Congress on Computational Mechanics in Conjunction with the Second Asian-Pacific Congress on Computational Mechanics

作者： r.kandasamy Department of Mathematics Institute of road and Transport Technology Erode-638 316 India

The study of magnetohydrodynamic mixed convection through a viscous fluid past a heated semi-infinite plate is considered very essential to understand the behavior of the performance of fluid motion in several applications. Since no attempt has been made to analyze the Hall current effect on magnetohydrodynamic mixed-convection flow past a semi-infinite vertical plate with thermal stratification and heat transfer under the influence of uniform magnetic field, we have investigated the same in this article. The similarity transformation has been utilized to convert the governing nonlinear partial differential equations into nonlinear ordinary differential equations and then the numerical solution of the problem is drawn using *** method. Numerical calculations were carried out for different values of dimensionless parameters of the problem under consideration for the purpose of illustrating the results graphically. Examination of such flow models reveals the influence of magnetic field on velocity and temperature profiles. The analysis of the results obtained shows that the flow field is influence d appreciably by the presence of Hall current, thermal stratification and magnetic effects.

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World Journal of Clinical Cases 2024年第6期12卷 1039-1044页

作者： Sathish Muthu Saravanan Annamalai Velmurugan kandasamy Department of Orthopaedics Orthopaedic Research GroupCoimbatore 641045Tamil NaduIndia Department of Biotechnology Karpagam Academy of Higher EducationCoimbatore 641021Tamil NaduIndia Department of Orthopaedics Government Karur Medical CollegeKarur 639004Tamil NaduIndia Department of Orthopaedics Government Thiruvallur Medical CollegeThiruvallur 631203Tamil NaduIndia Department of Orthopaedics Government Kilpauk Medical CollegeChennai 600010Tamil NaduIndia

Clavicle fractures are among the most prevalent types of fractures with numerous treatment strategies that have evolved over *** the realm of lateral-third clavicle fracture management,several surgical methods are available,with plate and screw constructs being one of the most frequently employed *** this construct,numerous choices exist for fixing the *** editorial provides an overview of the common plate options utilized in the management of distal third clavicle fractures underscoring the critical considerations and approaches that guide clinicians in selecting the most appropriate fixation techniques,considering the complex landscape of clavicle fractures and their challenging management.

关键词： Clavicle fracture Surgical management Distal clavicle plating Superior plating Anterior plating

Tenosynovitis of hand: Causes and complications

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World Journal of Clinical Cases 2024年第4期12卷 671-676页

作者： Sathish Muthu Saravanan Annamalai Velmurugan kandasamy Department of Orthopaedics Government Medical CollegeKarur 639004Tamil NaduIndia Orthopaedic research Group Coimbatore 641045Tamil NaduIndia Department of Biotechnology Faculty of EngineeringKarpagam Academy of Higher EducationCoimbatore 641021Tamil NaduIndia Department of Orthopaedics Government Thiruvallur Medical CollegeThiruvallur 631203Tamil NaduIndia Department of Orthopaedics Government Kilpauk Medical CollegeChennai 600010Tamil NaduIndia

Tenosynovitis represents a common clinical condition characterized by inflam-mation of the synovium that encases the tendon *** tenosynovities may be noted in any tendon in the body,extremities such as hand,and foot remain the sites of high predilection to acquire this *** predominant cause of this predilection rests in the intricate tendon arrangements in these extremities that permit fine motor *** editorial explores the common causes and the complications associated with this condition to improve the understanding of the readers of this common condition encountered in our everyday clinical practice.

关键词： Tenosynovitis Gout Hand Complications Infection

Q-Learning-Based Pesticide Contamination Prediction in Vegetables and Fruits

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Computer Systems Science & Engineering 2023年第4期45卷 715-736页

作者： kandasamy Sellamuthu Vishnu Kumar Kaliappan Department of Computer Science and Engineering KPR Institute of Engineering and TechnologyCoimbatore641407Tamil NaduIndia

Pesticides have become more necessary in modern agricultural ***,these pesticides have an unforeseeable long-term impact on people's wellbeing as well as the *** to a shortage of basic pesticide exposure awareness,farmers typically utilize pesticides extremely close to *** residues within foods,particularly fruits as well as veggies,are a significant issue among farmers,merchants,and particularly *** residual concentrations were far lower than these maximal allowable limits,with only a few surpassing the restrictions for such pesticides in *** is an obligation to provide a warning about this amount of pesticide use in *** technologies failed to forecast the large number of pesticides that were dangerous to people,necessitating the development of improved detection and early warning systems.A novel methodology for verifying the status and evaluating the level of pesticides in regularly consumed veggies as well as fruits has been identified,named as the Hybrid Chronic Multi-residual Framework(HCMF),in which the harmful level of used pesticide residues has been predicted for contamination in agro products using Q-Learning based recurrent Neural Network and the predicted contamination levels have been analyzed using Complex Event Processing(CEP)by processing given spatial and sequential *** analysis results are used to minimize and effectively use pesticides in the agricultural field and also ensure the safety of farmers and ***,the technique is carried out in a Python environment,with the results showing that the proposed model has a 98.57%accuracy and a training loss of 0.30.

关键词： Pesticide contamination complex event processing recurrent neural network Q learning multi residual level and contamination level

Efficient Single-Stage Bridgeless AC to DC Converter Using Grey Wolf Optimization

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Computer Systems Science & Engineering 2022年第11期43卷 487-499页

作者： Prema kandasamy K.Prem Kumar Department of Electrical and Electronics Engineering Thangavelu Engineering CollegeChennai-600097India Department of Electrical and Electronics Engineering Rajalakshmi Engineering CollegeChennai-602105India

Bridgeless single-stage converters are used for efficient(alternative current)AC-(direct current)DC *** converters control generators,likeelectromagnetic meso-and micro-scale generators with low *** factorcorrection helps increase the factor of the power *** main advantage ofthe power factor is it shapes the input current for increasing the real power of theAC *** this paper,a two-switch bridgeless rectifier topology is designedwith a power factor correction *** the proposed converter topologyto have good power quality parameters,the closed loop scheme,which uses thegrey wolf optimization(GWO)algorithm,is *** successes ofGWO encourage this research to implement GWO in the *** performanceof the proposed topology is analyzed under different load *** is carried out using the MATLAB/Simulink environment,and theresults are compared with those of conventional(proportional integral derivative)PID and(particle swarm optimization)PSO *** validate the simulation results,a 350-W hardware prototype is implemented,and the voltage ripple,efficiency,and power factor under different load conditions are analyzed and *** comparative study clearly indicates that the proposed convertertopology with a closed loop control scheme using the GWO algorithm improves the power factor to 0.9732 and reduces the voltage ripple to 0.12%with a conversion efficiency of 98.25%.

关键词： Bridgeless AC converter DC converter GWO controller power factor

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米娜·坎达萨米诗选

诗刊 2024年第8期 183-185页

作者：米娜·坎达萨米颜海峰(译) 不详