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Institution

National Institute of Technology, Silchar

EducationSilchar, Assam, India
About: National Institute of Technology, Silchar is a education organization based out in Silchar, Assam, India. It is known for research contribution in the topics: Control theory & Electric power system. The organization has 1934 authors who have published 4219 publications receiving 41149 citations. The organization is also known as: NIT Silchar.


Papers
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Journal ArticleDOI
TL;DR: In this article, an attempt is made for the performance improvement of parabolic trough collector (PTC) by modifying absorber tube with internally helically groove, base working fluid of water is replaced with Aluminium oxide (Al2O3) nanofluid for better thermal performance.
Abstract: With the depletion of fossil fuel effective utilization and efficient collection of solar energy has gained popularity in the recent days. In the present study an attempt is made for the performance improvement of parabolic trough collector (PTC) by modifying absorber tube with internally helically groove. Further, base working fluid of water is replaced with Aluminium oxide (Al2O3) nanofluid (3–8% by volume) for better thermal performance. Tests are performed considering 600, 800, and 1000 W/m2 heat flux at the tube outer surface. ANSYS Fluent 14.0 is used to simulate the problem considering two distinct Reynolds number (Re) of 4000 and 6000. Results indicate that with the increase in concentration of Al2O3 from 3% to 8%, pressure drop is increased by 14.5%. Heat transfer coefficient is enhanced by as high as 13.8% with the nanofluid compared to base fluid working at heat flux of 1000 W/m2 and Re = 4000. Further, increase in the value of Re from 4000 to 6000 heat transfer coefficient with nanofluid is increased by as high as 41.3%.

25 citations

Journal ArticleDOI
TL;DR: In this article, the authors studied the global fit of the global current data to the standard model and provided a model independent effective theory formalism in the presence of vector and axial vector new physics operators and gave predictions on several observables such as the differential branching ratio, ratio of branching ratios, forward backward asymmetry, and the longitudinal polarization fraction of the meson.
Abstract: Motivated by the anomalies present in $b\ensuremath{\rightarrow}s{l}^{+}{l}^{\ensuremath{-}}$ neutral current decays, we study the corresponding ${B}_{c}\ensuremath{\rightarrow}({D}_{s},{D}_{s}^{*}){\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ decays within the standard model and beyond. We use a model independent effective theory formalism in the presence of vector and axial vector new physics operators and study the implications of the latest global fit to the $b\ensuremath{\rightarrow}s{l}^{+}{l}^{\ensuremath{-}}$ data on various observables for the ${B}_{c}\ensuremath{\rightarrow}({D}_{s},{D}_{s}^{*}){\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ decays. We give predictions on several observables such as the differential branching ratio, ratio of branching ratios, forward backward asymmetry, and the longitudinal polarization fraction of the ${D}_{s}^{*}$ meson within standard model and within several new physics scenarios. These results can be tested at the Large Hadron Collider and, in principle, can provide complementary information regarding new physics in $b\ensuremath{\rightarrow}s{l}^{+}{l}^{\ensuremath{-}}$ neutral current decays.

25 citations

Proceedings ArticleDOI
01 Apr 2010
TL;DR: A novel ROM architecture has been proposed which suppresses metastability, both first and second order bubble errors, and eliminates the need of an error correction circuit in the front end of the ROM thereby reducing power consumption, area requirement and removing the delay associated with the additional stage.
Abstract: In a flash ADC, output of the comparators constitute the thermometer code. This thermometer code is converted to binary code with the help of a thermometer to binary decoder using a ROM. However, this conversion scheme suffers from metastability and bubble errors. A novel ROM architecture has been proposed which suppresses metastability, both first and second order bubble errors. It eliminates the need of an error correction circuit in the front end of the ROM thereby reducing power consumption, area requirement and removing the delay associated with the additional stage. This architecture also eliminates the need of Gray coded ROM and Gray to binary converter thereby making the circuit simpler.

25 citations

Journal ArticleDOI
TL;DR: In this paper, an adaptive-neuro fuzzy inference system (ANFIS) based model was developed to predict the performance and emission parameters of a CRDI assisted diesel engine under CNG dual-fuel operation.

25 citations

Journal ArticleDOI
TL;DR: This work presents a methodology in the combined field of reduced-order modeling and topology optimization, which consists of projecting the higher dimensional system of equations onto a lower dimensional space with the reduced basis vectors constructed using Proper Orthogonal Decomposition (POD).
Abstract: Additive printing allows the “single step” production of virtually any complex mechanical component. However, the manufacturing process involves a layer-by-layer deposition of material, which leads to an anisotropic mechanical behavior of the whole component. This would then entail a very fine 3D model to simulate the mechanical performance accurately. This simulation would also need to be integrated within an iterative design process in order to obtain the most efficient design. Both reasons explain the prohibitive number of calculations needed, which is currently beyond the capacities of existing software and computers. Recent research papers have opened promising pathways for integrating model reduction techniques within the overall topology optimization process. However, these approaches still present challenges such as choosing the minimum number and appropriate selection of the snapshots required to get accurate simulations. In this work, we present a methodology in the combined field of reduced-order modeling and topology optimization. The key idea consists of projecting the higher dimensional system of equations onto a lower dimensional space with the reduced basis vectors constructed using Proper Orthogonal Decomposition (POD). This reduced basis is updated in an incremental “on-the-fly” manner using alternatively costly high-fidelity and more rapid lower fidelity simulation snapshots. The variable-fidelity resolutions of successive approximations to the global system of equations are then integrated into the topology optimization process. The approaches are tested and computational savings and precision are compared, using both minimum compliance and compliant mechanism design benchmark problems.

25 citations


Authors

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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202335
2022149
2021947
2020742
2019596
2018451