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Parida S.K.,Nm Institute Of Engineering And Technology | Dash G.C.,Siksha O' Anusandhan University | Panda S.,National Institute of Technology Calicut
Modelling, Measurement and Control B | Year: 2011

The purpose of the present work is to investigate the MHD flow of an incompressible viscous electrically conducting fluid past a porous plate through porous medium. The porous plate rotates with uniform angular velocity about an axis normal to the plate and the fluid at infinity rotates with the same angular velocity about a non coincident parallel axis. An uniform magnetic field is applied parallel to the axis of rotation. An exact solution of the governing equations has been obtained in a closed form. It is found that steady velocity increases and transient velocity decreases with increase in magnetic parameter. The analysis also reveals that attainment of steady state in case of primary velocity is much quicker and this is attributed to Lorentz force. The heat transfer characteristic has also been studied on taking viscous and Joule dissipation into account. It is seen that temperature increases with increase in either M or K p.

Pallai G.K.,Nm Institute Of Engineering And Technology | Meenakshi S.,National Institute of Technology Rourkela | Rath A.K.,Veer Surendra Sai University of Technology | Majhi B.,National Institute of Technology Rourkela
Smart Innovation, Systems and Technologies | Year: 2015

In this paper, we have studied a comparative analysis on three MANET routing protocols namely AODV, DSR and DSDV. The performances of protocols are evaluated with respect to packet delivery ratio, throughput, average end-to-end delay, routing overhead, normalized routing load, and packet drop and loss metrics. Experiments has been conducted with 80 numbers of nodes using random waypoint mobility model for constant bit rate traffic using NS-2.35 simulator as a function of varying speed. Simulation results conclude that the throughput performance of both the on-demand routing protocols is fairly comparable. However, DSR protocol outperforms in terms of routing overhead, normalized routing load and packet drop metrics than AODV. Overall, AODV protocol exhibits superior performance in terms of packet delivery ratio and packet loss. © Springer India 2015.

Rout T.,Nm Institute Of Engineering And Technology | Garanayak M.,Centurion University of Technology and Management | Senapati M.R.,Centurion University of Technology and Management | Kamilla S.K.,iversity
International Conference on Electrical, Electronics, Signals, Communication and Optimization, EESCO 2015 | Year: 2015

Big data is an overall compatible term for any collection of data sets too large and complex. It is difficult to process them using traditional data processing applications. Here the challenges include analyzing, capturing, searching, sharing, storage, transferring, visualization, and violations of privacy. The trend to larger data sets is due to the additional information derived from analysis of a single large set of data which are related with one another, as compared to separate smaller sets with the same amount of data totally which allows correlations to be found to trends in business applications, preventing diseases and reducing crime and so on. Big data is a term that describes any huge amount of structural, semi-structural and unstructured data that has the potential to be mined for information. Big data doesn't refer to any specific quantity yet. The term is often used when speaking about petabytes and exabytes of data. © 2015 IEEE.

Parida S.K.,Nm Institute Of Engineering And Technology | Panda S.,National Institute of Technology Calicut
Meccanica | Year: 2011

An analysis has been carried out to study the effect of magnetic field on an electrically conducting fluid of second grade in a parallel channel. The coolant fluid is injected into the porous channel through one side of the channel wall into the other heated impermeable wall. The combined effect of inertia, viscous, viscoelastic and magnetic forces are studied. The basic equations governing the flow and heat transfer are reduced to a set of ordinary differential equations by using appropriate transformations for velocity and temperature. Numerical solutions of these equations are obtained with the help of Runge- Kutta fourth order method in association with quasilinear shooting technique. Numerical results for velocity field, temperature field, skin friction and Nusselt number are presented in terms of elastic parameter, Hartmann number, Prandtl number and Reynolds number. Special case of our results is in good agreement with earlier published work. © 2010 Springer Science+Business Media B.V.

Banerjee S.,University of Nevada, Reno | Misra M.,University of Nevada, Reno | Mohapatra S.K.,University of Nevada, Reno | Howard C.,University of Nevada, Reno | And 2 more authors.
Nanotechnology | Year: 2010

Titania (TiO2) nanotubular arrays provide an exciting material for dye sensitizing solar cells (DSSC) because of their large surface area, lower recombination losses, and fast charge transport properties along the nanotubes. In this paper, design of a next generation DSSC using a TiO 2 nanotubular membrane is discussed. A single step, green process is developed to produce stable large area, free-standing TiO2 nanotubular films (in a short time, 30-60min) by anodizing Ti using an organic electrolyte, containing disodium salt of ethylene diaminetetraacetic acid (Na2[H2EDTA]) as complexing agent, and subsequent drying. Transparent, crack-free TiO2 films, 20-41νm thick containing ordered hexagonal TiO2 nanotubes are achieved by this process. Films having a geometrical area up to 16.5cm2 with pore openings of 182nm have been obtained. These films have been etched to form membranes which provide an exciting prospect for front side illuminated DSSC with good mass and photon transport properties as well as wettability. A photovoltaic efficiency of 2.7% is achieved using a front side illuminated DSSC compared to 1.77% using back side illumination. © 2010 IOP Publishing Ltd.

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