National Institute of Technology Silchar

www.nits.ac.in
Silchar, India

National Institute Of Technology Silchar is one of the 30 NITs of India and was established in 1967 as a Regional Engineering College in Assam. In 2002 it was upgraded to the status of National Institute of Technology and was declared as Institute of National Importance under the National Institutes of Technology Act, 2007.The institution has come up by leads and bounds and is today recognized as one of the best engineering colleges in the country. Its students have excelled in diverse fields and the institute boasts of an enviable alumni Network, spread across the world.The institution has also come to be synonymous as the face of Silchar, contributing phenomenally to the socio economic development of the place.The institution takes up several consultancy projects, pro bono, for the welfare of the general public in the region.Nestled in panoramic settings, the institute offers the student the most breathtaking of campuses while imbibing in him the best of education.The pristine environment offers the students unique ways to learn the societal aspects of life while climbing the ladders of technosphere. Several students of the college have spearheaded educational drives like providing free primary education, coaching, counselling to the underprivileged sections living around the vicinity of the campus.In fact, NIT Silchar students have earned a reputation for instilling the desire to imbibe higher education to the masses of Barak Valley. They periodically conduct crash courses and exams for the city students for various exams as JEE, CAT, etc. Wikipedia.


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Malakar T.,National Institute of Technology Silchar | Goswami S.K.,Jadavpur University
International Journal of Electrical Power and Energy Systems | Year: 2013

This paper proposes a new formulation of the combined Optimal Active and Reactive Dispatch (OARD) problem with Minimum Control Movements (MCM) for the voltage control devices. The main objective of the proposed model is to minimize the total power system operation cost which include fuel cost of generators and switching cost of equipments like tap transformers and shunt capacitors. Practical constraints such as maximum allowable number of switching operation in a day for tap changing transformers and switchable capacitors are taken into consideration. A penalty based approach has been formulated to tackle with the switching costs of adjustable equipments. The problem has been formulated as a nonlinear dynamic optimization problem with the presence of both continuous and discrete control variables and solved using Artificial Bee's Colony (ABC) algorithm. The approach has been tested on IEEE 30 bus system and the simulation is carried out in MATLAB. In order to verify the effectiveness of the results obtained, both active and reactive power dispatch problems have been solved separately and compared with the proposed approach. Results demonstrate the effectiveness of the proposed approach. © 2012 Elsevier Ltd. All rights reserved.


Misra R.D.,National Institute of Technology Silchar | Murthy M.S.,National Institute of Technology Silchar
Renewable and Sustainable Energy Reviews | Year: 2011

For India, there is a need to take a mission approach to explore the possibility of using straight/unmodified vegetable oils, their blends or biodiesels and their blends with mineral diesel as alternative fuel in order to achieve the twin objectives of reducing the emissions from the diesel engine and to increase the energy security of the country. Jatropa seems to the answer for India's energy woes. Millions of hectares of waste land is available in India and out of which about 33 million hectares of wasteland has been found to be suitable for Jatropa cultivation. Jatropa seems to be perfectly suited for India. However, all is not well for Jatropa in India. There are many social, technical and political issues to be sorted out before the dream of energy security through Jatropa cultivation could be realized. These problems and suggested solutions are dealt in detail in this paper. The suitability of Jatropa oil blends and Jatropa biodiesel blends in running of compression ignition has been evaluated and found that the performance of Jatropa oil and Jatropa biodiesel blends is very close to performance of diesel in the compression ignition engine. The break thermal efficiency, break specific energy consumption, CO, UBHC, NOx emissions have been experimentally determined. A SWOT analysis of Jatropa with specific reference to Indian conditions has been carried out and found that Jatropa indeed is a plant which can make the Indian dream of self-sufficiency in energy - a reality. © 2010 Elsevier Ltd. All rights reserved.


Ahmaruzzaman M.,National Institute of Technology Silchar
Progress in Energy and Combustion Science | Year: 2010

Fly ash, generated during the combustion of coal for energy production, is an industrial by-product which is recognized as an environmental pollutant. Because of the environmental problems presented by the fly ash, considerable research has been undertaken on the subject worldwide. In this paper, the utilization of fly ash in construction, as a low-cost adsorbent for the removal of organic compounds, flue gas and metals, light weight aggregate, mine back fill, road sub-base, and zeolite synthesis is discussed. A considerable amount of research has been conducted using fly ash for adsorption of NOx, SOx, organic compounds, and mercury in air, dyes and other organic compounds in waters. It is found that fly ash is a promising adsorbent for the removal of various pollutants. The adsorption capacity of fly ash may be increased after chemical and physical activation. It was also found that fly ash has good potential for use in the construction industry. The conversion of fly ash into zeolites has many applications such as ion exchange, molecular sieves, and adsorbents. Converting fly ash into zeolites not only alleviates the disposal problem but also converts a waste material into a marketable commodity. Investigations also revealed that the unburned carbon component in fly ash plays an important role in its adsorption capacity. Future research in these areas is also discussed. © 2009 Elsevier Ltd. All rights reserved.


Misra R.D.,National Institute of Technology Silchar | Murthy M.S.,National Institute of Technology Silchar
Renewable and Sustainable Energy Reviews | Year: 2011

Biodiesel is widely accepted as comparable fuel to diesel in compression ignition engines. It offers many advantages including: higher cetane number; reduced emissions of particulates, NOx, SOx, CO, and hydrocarbons; reduced toxicity; improved safety; and lower lifecycle CO 2 emissions. A characteristic of biodiesel limiting its application is its relatively poor low-temperature flow properties. Improvement of its low temperature flow characteristic still remains one of the major challenges when using biodiesel as an alternative fuel for diesel engines. The biodiesel fuels derived from fats or oils with significant amounts of saturated fatty compounds display higher cloud points and pour points thus limiting their applications. The cold flow properties of different biodiesel were evaluated with various additives towards the objectives of improving the viscosity, pour point and cloud point. Methanol ethanol, kerosene, Mg additives, etc. have been tried many researchers to improve the cold flow behavior of biodiesels. Varying results of improvement in cold flow properties have been obtained by using different additives. Similarly different additives have been used by different researchers to improve the performance of a compression ignition engine and its emissions. This review has been taken up to identify the various additives used to improve the cold flow properties of biodiesels and improve the performance of a diesel engine and its emissions while using additive blended biodiesels. The review concludes that the additives usage in biodiesel is inseparable both for improving the cold flow properties and for the better engine performance and emission control and further research is needed to develop biodiesel specific additives. © 2011 Elsevier Ltd. All rights reserved.


Ahmaruzzaman M.,National Institute of Technology Silchar
Advances in Colloid and Interface Science | Year: 2011

Industrial wastes, such as, fly ash, blast furnace slag and sludge, black liquor lignin, red mud, and waste slurry, etc. are currently being investigated as potential adsorbents for the removal of the heavy metals from wastewater. It was found that modified industrial wastes showed higher adsorption capacity. The application of low-cost adsorbents obtained from the industrial wastes as a replacement for costly conventional methods of removing heavy metal ions from wastewater has been reviewed. The adsorption mechanism, influencing factors, favorable conditions, and competitive ions etc. on the adsorption of heavy metals have also been discussed in this article. From the review, it is evident that certain industrial waste materials have demonstrated high removal capacities for the heavy metals laden with wastewater. However, it is to be mentioned that adsorption capacities of the adsorbents vary depending on the characteristics of the adsorbents, the extent of chemical modification and the concentration of adsorbates. There are also few issues and drawbacks on the utilization of industrial wastes as low-cost adsorbents that have been addressed. In order to find out the practical utilization of industrial waste as low-cost adsorbents on the commercial scale, more research should be conducted in this direction. © 2011 Elsevier B.V.


Choubey G.,National Institute of Technology Silchar | Pandey K.M.,National Institute of Technology Silchar
International Journal of Hydrogen Energy | Year: 2016

Computational simulation of Scramjet combustor at Mach 2.5 through two struts and with three angle of attack (α = -3°, α = 0° and α = 3°) have been presented and discussed in the present research article. Here the fuel which is injected through two struts is placed parallel to the air stream. The geometry and model used here is slight modification of the DLR (German Aerospace Center) scramjet model. Steady two and three dimensional (2D and 3D) Reynolds-averaged Navier-stokes (RANS) simulation and SST k-ω turbulence model is used to predict the shock structure and combustion phenomenon inside the scramjet combustor. All the simulations are done by using ANSYS 14-FLUENT code. Eddy dissipation along with finite rate chemistry model is used as combustion model for the present geometry because of the absence of Arrhenius calculations where turbulence controls the reaction rate. The effect of variation of angle of attack on the efficiency of two-strut scramjet combustor is also discussed in the research article. Present results show that the geometry with zero angle of attack i.e. α = 0°, have smallest ignition delay and it improves the performance of scramjet combustor as compared to geometry with α = -3° and α = 3°. The combustion phenomena as well as efficiency is also found to be highest in case of geometry with α = 0°. In order to validate the results, the numerical data for single strut injection is compared with experimental result which is taken from the literature. © 2016 Hydrogen Energy Publications, LLC.


Saikia L.C.,National Institute of Technology Silchar | Sahu S.K.,National Institute of Technology Silchar
International Journal of Electrical Power and Energy Systems | Year: 2013

In this paper, a first attempt has been made to develop a small perturbation model to study the frequency response of a combined cycle gas turbine (CCGT) power plant, following a small step load perturbation (SLP). The powerful Firefly Algorithm (FA) has been used for the first time in frequency control in CCGT plant for optimization of controller gains. The performance of some classical controllers such as integral (I), Proportional-Integral (PI), Proportional-Integral-Derivative (PID) and Integral-Derivative (ID) are compared, and it is found that PID controller gives better performance over the other controllers. Sensitivity analysis has been carried out to see the robustness of the optimum PID gains obtained at nominal to wide change in loading and change in inertia constant (H). Analysis reveals that optimized PID gains obtained at nominal are quit robust and need not be reset for wide changes in loading and inertia constant (H). © 2013 Elsevier Ltd. All rights reserved.


Debnath P.,National Institute of Technology Silchar
Computers and Mathematics with Applications | Year: 2012

The aim of this article is to introduce and study the notion of lacunary ideal convergence in intuitionistic fuzzy normed linear spaces as a variant of the notion of ideal convergence. Also, a new concept, called lacunary convergence, is introduced. Using these two notions, lacunary I-limit points and lacunary I-cluster points have been defined and the relation between them has been established. Characterization for lacunary ideal convergence preserving linear operators has been given. Furthermore, the notions of lacunary Cauchy and lacunary I-Cauchy sequences are introduced and studied. © 2011 Elsevier Ltd. All rights reserved.


Misra R.D.,National Institute of Technology Silchar | Murthy M.S.,National Institute of Technology Silchar
Renewable and Sustainable Energy Reviews | Year: 2010

The ever increasing fossil fuel usage and cost, environmental concern has forced the world to look for alternatives. Straight vegetable oils in compression ignition engine are a ready solution available, however, with certain limitations and with some advantages as reported by many researchers. A comprehensive and critical review is presented specifically pertaining to straight vegetable oils usage in diesel engine. A detailed record of historical events described. Research carried out specifically under Indian conditions and international research work on the usage of straight vegetable oils in the diesel engine is separately reviewed. Many researchers have reported that straight vegetable oils in small percentage blends with diesel when used lower capacity diesel engines have shown great promise with regards to the thermal performance as well exhaust emissions. This has been explained in detail. Finally based on the review of international as well as Indian research a SWOT analysis is carried out. The review concludes that there is still scope for research in this area. © 2010 Elsevier Ltd. All rights reserved.


Ahmaruzzaman M.,National Institute of Technology Silchar
Separation Science and Technology (Philadelphia) | Year: 2012

The present investigation describes the potential of acid activated papaya leaf for the adsorption of methyl orange (MO) dye from aqueous solution. The FT-IR analysis indicated the presence of a wide variety of functional groups on the surface of the activated papaya leaf. Scanning electron microscopy and Electron dispersion X-ray techniques indicated the morphological behavior of adsorption onto the adsorbent, and weight percentage of chemical compositions available on the surface of adsorbent. The parameters, such as pH, contact time, and agitation rate giving the highest adsorption efficiency were obtained at 2, 120 min, and 150 rpm, respectively. The Langmuir model was found to represent the isotherm data better than other isotherms studied. Batch adsorption studies, based on the assumption of a pseudo first-order, Elovich Equation, and the pseudo second-order showed that the kinetic data followed closely a pseudo second-order mechanism. The adsorption capacity of activated papaya leaf for the removal of MO dye was found to be 333.34 mg/g. These showed that papaya leaf could be considered as a good and economical substitute of commercial activated carbon. © 2012 Copyright Taylor and Francis Group, LLC.

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