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Transient Combined Convective Heat Transfer over a Stretching Surface in a Non-Newtonian Nanofluid Using Buongiorno’s Model

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Journal of Applied Mathematics and physics 2016年第2期4卷 443-460页

作者： rama subba reddy Gorla Buddakkagari Vasu Sadia Siddiqa Department of Mechanical Engineering University of Akron Akron OH USA Department of Mathematics Motilal Nehru National Institute of Technology Allahabad India Department of Mathematics COMSATS Institute of Information Technology Attock Pakistan

The present paper investigates the transient mixed convective boundary layer flow of an incompressible non-Newtonian quiescent nanofluid adjacent to a vertical stretching surface. The effects of the Brownian motion and thermophoresis are included for the nanofluid. Using appropriate non-similarity transformations the non-dimensional, coupled and highly non-linear system of equations is solved numerically using the efficient Keller-box implicit finite difference method for the whole transient from t=0 (initial state) to (final steady-state flow). The box method is unconditionally stable. Numerical results for dimensionless velocity (f’), micro-rotation (g), temperature (θ), nanoparticle volume fraction (Φ) at final steady state flow, skin friction function (), Nusselt number function () and Sherwood number function () have been presented on various parameters inform of tables and graphs. The results indicate that as Nb and Nt increase, the Nusselt number decreases whereas Sherwood number increases at initial and early state time but decreases at the final steady state time. As the K increases, the friction factor decreases whereas surface mass transfer rate and the surface heat transfer rates slightly increase. The results reveal that there is a smooth transition of flow from unsteady state to the final steady state. A special case of our results is in good agreement with an earlier published work. The study has many practical applications such as extrusion of plastic sheets, paper production, glass blowing, metal spinning and drawing plastic films.

关键词： Nanofluid Mixed Convection Non-Newtonian Fluid Brownian Motion Keller–Box Numerical Method Boundary Layers

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SMO Algorithm to Unravel CEED problem using Wind and Solar

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Intelligent Automation & Soft Computing 2023年第2期35卷 1857-1872页

作者： A.prabha G.Themozhi rama reddy Sathi Faculty of Electrical Engineering Anna UniversityChennai600025India Department of Electrical and Electronics Engineering AMET Deemed UniversityChennai603112India Department of Electrical and Electronics Engineering Rajalakshmi Engineering CollegeChennai602105India

This research proposes a more advanced way to address Combined Economic Emission Dispatch(CEED)*** Load Dispatch(ELD)and Economic Emission Dispatch(EED)have been implemented to reduce generating unit fuel costs and *** both economics and emission tar-gets are taken into account,the dispatch of an aggregate cost-effective emission challenge *** research affords a mathematical modeling-based analyti-cal technique for solving economic,emission,and collaborative economic and emission dispatch problems with only one *** study takes into account both the fuel cost target and the environmental impact of *** bi-inten-tion CEED problem is converted to a solitary goal function using a price penalty factor *** this case,a metaheuristic and an environment-inspired,intel-ligent Spider Monkey Optimization technique(SMO)are used to address the CEED *** following the generator’s scheduling process,the SMO meth-od is used to regulate the output from the power generation system in terms of pollution and fuel *** Fission-Fusion social(FFS)structure of spider mon-keys promotes them to utilize a global optimization method known as SMO dur-ing foraging *** emphasis is mostly on lowering the cost of generation and pollution in order to improve the efﬁciency of the power system and han-dle dispatch problems with *** economic dispatch has been reme-died,and the improved result demonstrates that the system’s performance is stable andﬂexible in real ***,the system’s output demonstrates that the system has improved in resolving CEED difﬁ*** compared to ear-lier investigations,the proposed model’sﬁndings have *** the gener-ating units,wind and solar are used to explore the CEED crisis in the IEEE 30 bus system.

关键词： Cost of generation emission CEED thermal power system bi-intention SMO wind and solar IEEE 30 bus system

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Dilatometric Sintering of Ti-2A1 and Ti-5AI Elemental powders

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Journal of Materials Science & Technology 2007年第3期23卷 363-366页

作者： Bharat B.pANIGRAHI N.subba reddy Karabi DAS M.M.GODKHINDI Department of Metallurgical and Materials Engineering Indian Institute of Technology Kharagpur

The effect of Al addition （2 and 5 at. pct） on sintering kinetics of Ti power were investigated. Al reduces the sintering rates, sinter density, increases activation energy of sintering and accelerates the grain growth. Sintering was controlled by mixed mode, i.e. transient liquid phase sintering, formation of intermetallics, and Ti grain boundary diffusion in TiAl2 and other intermetallics.

关键词： Dilatometry Sintering Diffusion Activation energy

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Synthesis,isolation,identification and characterization of new process-related impurity in isoproterenol hydrochloride by HpLC,LC/ESI-MS and NMR

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Journal of pharmaceutical Analysis 2017年第6期7卷 394-400页

作者： Neeraj Kumar subba Rao Devineni prasad reddy Gajjala Shailendra Kumar Dubey pramod Kumar Chemical Research Department Micro Labs LtdAPI DivisionBommasandra-Jigani Link RoadKIADB INDL AreaBommasandraBangalore 560105KarnatakaIndia

One unknown impurity （Imp-II） during the analysis of laboratory batches of isoproterenol hydrochloride was detected in the level ranging from 0.04% to 0.12% by high performance liquid chromatography with UV detection. The unknown impurity structure was proposed as 4-[2-（propan-2oylamino）ethyl]benzene-l,2-diol （Imp-II） using the liquid chromatography-mass spectrophotometry （LC-MS） analysis. Imp-II was isolated by semi-preparative liquid chromatography from the impurity-enriched reaction crude sample. Its proposed structure was confirmed by nuclear magnetic spectroscopy such as 1H, 13C, DEpT （1D NMR）, HSQC （2D NMR） and infrared spectroscopy （IR）, and retention time and purity with HpLC followed by the chemical synthesis. Due to less removable nature of Imp-II during the purification, the synthetic process was optimized proficiently to control the formation of Imp-II below to the limit 〈 0.12% in the course of reaction. The new chemical route was developed for the preparation of this impurity in required quantity with purity to use as reference standard. The most probable mechanism for the formation of Imp-II was discussed in details.

关键词： Isoproterenol hydrochloride Impurities HpLC NMR

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Joining of AZ31 and AZ91 Mg alloys by friction stir welding

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Journal of Magnesium and Alloys 2015年第4期3卷 330-334页

作者： B.Ratna Sunil G.pradeep Kumar reddy A.S.N.Mounika p.Navya Sree p.rama pinneswari I.Ambica R.Ajay Babu p.Amarnadh Department of Mechanical Engineering Rajiv Gandhi University of Knowledge Technologies(AP-IIIT)Nuzvid 521202India Department of Mechanical Engineering Vignana Bharathi Institute of TechnologyHyderabad 501301India

Two dissimilar magnesium(Mg)alloy sheets,one with low aluminium(AZ31)and another with high aluminium(AZ91)content,were successfully joined by friction stir welding(FSW).The effect of process parameters on the formation of hot cracks was investigated.A sound metallurgical joint was obtained at optimized process parameters(1400 rpm with 25 mm/min feed)which contained fine grains and distributed β(Mg_(17)Al_(12))phase within the nugget *** increasing trend in the hardness measurements has also confirmed more amount of dissolution of aluminium within the nugget zone.A sharp interface between nugget zone and thermo mechanical affected zone(TMAZ)was clearly noticed at the AZ31 Mg alloy side(advancing)but not on the AZ91 Mg alloy side(retreating).From the results it can be concluded that FSW can be effectively used to join dissimilar metals,particularly difficult to process metals such as Mg alloys,and hot cracking can be completely eliminated by choosing appropriate process parameters to achieve sound joint.

关键词： Dissimilar metal joining Magnesium alloys Friction stir welding AZ31 AZ91

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Multi-component synthesis of methylene bis isoxazolo[4,5-b]-pyridine-N-oxides

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Chinese Chemical Letters 2010年第8期21卷 927-930页

作者： E.Rajanarendar M.Nagi reddy K.rama Murthy Department of Chemistry Kakatiya University

A three component one-pot protocol was investigated for the synthesis of methylene bis isoxazolo[4,5-b]-pyridine-N-oxides from commercially available materials.

关键词： Multi-component synthesis Knoevenagel condensation Michael addition New methodology

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Genotype×year interaction of pod and seed mass and stability of pongamia pinnata families in a semi-arid region

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Journal of Forestry Research 2020年第4期31卷 1333-1346页

作者： G.R.Rao B.Sarkar B.M.K.Raju p.Sathi reddy A.V.M.subba Rao Jessie Rebecca ICAR-Central Research Institute for Dryland Agriculture SantoshnagarHyderabadTelangana State 500059India Tropical Forest Research Institute(TFRI) Indian Council of Forestry Research&EducationMinistry of EnvironmentForest&Climate ChangeGovt.of IndiaJabalpur 482021India

Sixteen pongamia families were evaluated in a field experiment for eight consecutive years in dryland conditions to identify stable,high-yielding *** trial was conducted in a randomized complete block design with three *** family,consisting of nine trees per replication,was planted at a spacing of3 m x 3 *** stability was analyzed using(1)Eberhart and Russel’s regression coefficient(β_i)and deviation from regression(S_d^2),(2)Wrike’s ecovalence(W_i);(3)Shukla stability variance(σ_i^2);and(4)piepho and Lotito’s stability index(L_i).Families were also analyzed for adaptability and stability using AMMI and GGE biplots graphical *** study revealed significant variances due to family and family x year interaction for pod and seed *** performed differently and ranked differently across *** performance of families was influenced by both genetic factor and environmental conditions in different *** families tested,TNMp20,Acc14,TNMp14 and Acc30 were high yielders for pods,and Acc14,Acc30,TNMp6,RAK19 and TNMp14 were high for seed *** to the Eberhart and Russell model,Acc30,TNMp14 and TNMp3 were stable across *** the graphical view of family x year interaction based on AMMI methods,TNMp3,TNMp4 and TNMp14 had greater stability with moderate seed yield,and Acc14 and Acc30 had moderate stability with high seed *** the other hand,GGE biplots revealed Acc14,Acc30 and TNMp14 as high yielders with moderate *** and GGE biplots were able to capture nonlinear parts of the family x year interaction that were not be captured by the Eberhart and Russel model while also identifying stable *** on different methodologies,Acc14,Acc30 and TNMp14 were identified as high yielding and stable families for promoting pongamia cultivation as a biofuel crop for semi-arid regions.

关键词： Biofuel pongamia Genetic diversity Stability AMMI (additive main effects multiplicative interaction) GGE biplots Multi-year trial SVD(singular value decomposition)

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An Intelligent Big Data Security Framework Based on AEFS-KENN Algorithms for the Detection of Cyber-Attacks from Smart Grid Systems

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Big Data Mining and Analytics 2024年第2期7卷 399-418页

作者： Sankaramoorthy Muthubalaji Naresh Kumar Muniyaraj Sarvade pedda Venkata subba Rao Kavitha Thandapani pasupuleti rama Mohan Thangam Somasundaram Yousef Farhaoui Department of Electrical and Electronics Engineering CMR College of Engineering&TechnologyHyderabad 501401India Department of Electronics and Communication Engineering Vardhaman College of Engineering KacharamShamshabad 501218India Department of Electronics and Communication Engineering Sreenidhi Institute of Science and TechnologyHyderabad 501301India Department of Electronics and Communication Engineering Vel Tech Rangarajan Dr.Sagunthala R&D Institute of Science and TechnologyChennai 600062India Department of Electrical and Electronics Engineering Bharat Institute of Engineering and TechnologyHyderabad 501510India Department of Computer Science and Engineering Amrita School of ComputingAmrita Vishwa VidhyapeethamBengaluru 560035India T-IDMS Department of Computer ScienceFaculty of Sciences and TechniquesMoulay Ismail UniversityErrachidia 52000Morocco

Big data has the ability to open up innovative and ground-breaking prospects for the electrical grid,which also supports to obtain a variety of technological,social,and financial *** is an unprecedented amount of heterogeneous big data as a consequence of the growth of power grid technologies,along with data processing and advanced *** main obstacles in turning the heterogeneous large dataset into useful results are computational burden and information *** original contribution of this paper is to develop a new big data framework for detecting various intrusions from the smart grid systems with the use of AI ***,an AdaBelief Exponential Feature Selection(AEFS)technique is used to efficiently handle the input huge datasets from the smart grid for boosting ***,a Kernel based Extreme Neural Network(KENN)technique is used to anticipate security vulnerabilities more *** polar Bear Optimization(pBO)algorithm is used to efficiently determine the parameters for the estimate of radial basis ***,several types of smart grid network datasets are employed during analysis in order to examine the outcomes and efficiency of the proposed AdaBelief Exponential Feature Selection-Kernel based Extreme Neural Network(AEFS-KENN)big data security *** results reveal that the accuracy of proposed AEFS-KENN is increased up to 99.5%with precision and AUC of 99%for all smart grid big datasets used in this study.

关键词： smart grid Machine Learning(ML) big data analytics AdaBelief Exponential Feature Selection(AEFS) polar Bear Optimization(pBO) Kernel Extreme Neural Network(KENN)

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Enhanced Energy Efficient with a Trust Aware in MANET for Real-Time Applications

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Computers, Materials & Continua 2023年第4期75卷 587-607页

作者： M.V.Narayana Vadla pradeep Kumar Ashok Kumar Nanda Hanumantha Rao Jalla subba reddy Chavva Department of CSE Guru Nanak Institutions Technical CampusHyderabadRanga Reddy DistrictTelangana501506India Department of CSE B V Raju Institute of TechnologyNarsapurMedakTelangana502313India Department of CSE T.R.R.Government Degree College KandukurKandukurA.P.523105India Department of IT VFST&Research(Deemed to be University)VadlamudiA.P.522213India

Mobile ad hoc networks (MANETs) are subjected to attack detectionfor transmitting and creating new messages or existing message *** attacker on another node evaluates the forging activity in themessage directly or indirectly. Every node sends short packets in a MANETenvironment with its identifier, location on the map, and time through *** attackers on the network broadcast the warning message usingfaked coordinates, providing the appearance of a network collision. Similarly,MANET degrades the channel utilization performance. performancehighly affects network performance through security algorithms. This paperdeveloped a trust management technique called Enhanced Beacon TrustManagement with Hybrid Optimization (EBTM-Hyopt) for efficient clusterhead selection and malicious node detection. It tries to build trust amongconnected nodes and may improve security by requiring every participatingnode to develop and distribute genuine, accurate, and trustworthy materialacross the network. Specifically, optimized cluster head election is done periodicallyto reduce and balance the energy consumption to improve the lifetimenetwork. The cluster head election optimization is based on hybridizingparticle Swarm Optimization (pSO) and Gravitational Search OptimizationAlgorithm (GSOA) concepts to enable and ensure reliable routing. Simulationresults show that the proposed EBTM-HYOpT outperforms the state-of-thearttrust model in terms of 297.99 kbps of throughput, 46.34% of pDR, 13%of energy consumption, 165.6 kbps of packet loss, 67.49% of end-to-end delay,and 16.34% of packet length.

关键词： MANET malicious nodes clustering trust management beacon message

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A comparative analysis of unsteady and steady Buongiorno’s Williamson nanoliquid flow over a wedge with slip effects

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Chinese Journal of Chemical Engineering 2020年第7期28卷 1767-1777页

作者： R.Chandra Sekhar reddy p.Sudarsana reddy Department of Mathematics Rajeev Gandhi Memorial Collge of Engineering&TechnologyNandyalA.P.India

Comparison between unsteady and steady MHD Buongiorno’s model Williamson nanoliquid flow through a wedge with slip effects,chemical reaction and radiation is made in this *** and Brownian motion are also considered in this *** similarity variables are presented to transmute the governing pDEs into the set of non-linear *** most widely authenticated finite element method is implemented to analyze these set of ODEs *** behavior of concentration,temperature and velocity sketches for varied values of relevant parameters is numerically calculated and the outcomes are plotted through *** numerical values of dimensionless rates of mass transfer,heat and velocity are also evaluated and depicted through *** is noted that with upsurging values of angle of wedge parameter,the distributions of temperature of the liquid intensify in both steady and unsteady cases.

关键词： Finite element method Chemical reaction Williamson nanoliquid Thermophoresis Thermal radiation Brownian motion

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