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1337 articles for “simulation studies”
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Report on the Effects of Mole Fraction, Doping Concentration, Gate Length and Nano-Layer Thickness to Control the Device Engineering in the Nanoelectronic AlGaN/GaN HEMTs at 300 K to Enhance the Reputation of the NIT Arunachal Pradesh
Abstract: In this work, we report total 20748 individual simulation-outputs according to the performed simulation-studies on the Nanoelectronic AlGaN/GaN high electron mobility transistors (HEMTs). This series of simulation work has been performed using the SILVACO-ATLAS software tool. In this work, the drain characteristics is investigated with respect to the Aluminium mole fraction, doping concentration, drain voltage, gate voltage, gate length and thickness of the AlGaN nano-layer. The investigation on the effect …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 19, Issue 1, 2017 · pp. 15–47 Read article
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Absorption Refrigeration System through Solar Energy: An Over Review
Abstract: Abstract Recently, types of traditional energy have failed to satisfy the human needs due to their limited quantity as well as their negative environmental impacts. Conventional refrigeration systems mainly based on vapor compression system are major electricity consumers and their refrigerants are being banned by international legislation. It was studied that out of the total energy consumption, a large portion of energy is being used by conventional refrigeration systems. From …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 1, 2016 · pp. 11–22 Read article
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Dielectric Polymer Based Tunable Bandpass Filter for RF MEMS Applications
Abstract: In this paper, we report on the design, modeling, and analysis of a tunable bandpass filter implemented in a coplanar waveguide (CPW) configuration, where a distributed MEMS transmission line (DMTL) is integrated with dielectric polymer layers to achieve dynamic frequency and bandwidth reconfigurability. The proposed filter architecture leverages the tunable dielectric response of polymer films, enabling precise control of the center frequency and passband width under applied electrostatic bias. Comprehensive …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1449–1470 Read article
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Integrated Analysis of Stress Patterns in Transparent Polycarbonate Specimens: A Comparative Study between Photoelasticity and FEA Simulation for Compact Circular Testing
Abstract: Photoelasticity stands as a robust experimental technique within the realms of mechanics and materials science, offering a means to visually assess and analyze stress distribution within materials possessing transparency or translucency. This method, a non-destructive testing approach, involves the visualization of stress on a model subjected to a load, leveraging the unique property of materials known as birefringence or double refraction. The procedure entails the careful selection of a suitable …
Published in Journal of Polymer & Composites · Vol. 12, Issue 4, 2024 · pp. 79–87 Read article
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Comparative Study of Turbulence Models for the Simulation of Three-Dimensional Transonic Flow around Airfoils
Abstract: The analysis of three dimensional transonic flows was carried out on the well-known ONERA M6 airfoil. In this paper three turbulence models i.e. Spalart-Allmaras, k-ω shear stress transport (SST) and k-ε Realizable were compared for transonic flows and validated through comparison with the experimental measurements and CFD results obtained from NASA ONERA M6 study for the selected wing. The discretization of the computational domain was done using an unstructured mesh, …
Published in Journal of Aerospace Engineering & Technology · Vol. 6, Issue 2, 2016 · pp. 47–59 Read article
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Comparison Study between Pd/AC and Pd/CB for Simultaneous Production of Hydrogen and Carbon Nanotubes using Thermocatalytic Decomposition of Methane
Abstract: Hydrogen is an attractive alternative source of the future need. It could be produced from the diverse sources and is used for a transport fuel which chiefly alliance with fuel cells. The crucial challenge for hydrogen production is reducing the price of production technologies to make the ensuing hydrogen price economical with conventional fuels. Thermocatalytic decomposition (TCD) of methane is one of the most advantageous technique which will meet the …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 18, Issue 1, 2016 · pp. 18–26 Read article
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Fitting Relative Permeability’s Curves Based on Laboratory Production Data for A Thermal Composite Core Flooding Experiment
Abstract: Numerical simulators are effective tools for an adequate understanding of models geological and dynamic properties under which enhanced oil recovery techniques are investigated. Core flooding experiments are usually conducted for calibrating simulated rock and fluid properties against actual test results at micro-scales, and for further scaling up processes to the reservoir scale. In this paper, laboratory experiments data were used as input for a numerical simulator to study the effect …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 3, 2019 · pp. 41–56 Read article
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Comparative Evaluation of the Effect of Adhesive Restorative Techniques on the Reinforcement of Simulated Immature Permanent Teeth: An in Vitro Study
Abstract: The aim of the study was to compare the reinforcement effect of 3 different adhesive restorative techniques on simulated immature maxillary central incisors after apexification. A total of 30 simulated immature permanent maxillary central incisors were randomly assigned into 3 groups (n=10), according to the reinforcing technique used: Group 1: Nanohybrid composite. (Tetric N-Ceram Ivoclar Vivadent), Group 2: Short-fiber reinforced composite (everX posterior GC EUROPE) extended 3mm below CEJ, covered …
Published in Journal of Polymer & Composites · Vol. 10, Issue 3, 2022 · pp. 69–75 Read article
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Numerical Simulation of Entrained-flow Coal Gasification: A Study on Particles History
Abstract: Normal 0 false false false MicrosoftInternetExplorer4 Studies of coal particle history during coal gasification inside the gasifier are very limited. A comprehensive 3D numerical simulation of entrained-flow coal gasification is conducted. The Eulerian-Lagrangian approach is applied to solve the Navier-Stokes equations and the particle dynamics. The finite rate/eddy dissipation model is used to calculate the rate of gasgas phase reactions, whereas only finite rates are used for solid-gas phase reactions. …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 6, Issue 3, 2016 · pp. 9–18 Read article
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A Case Study of Free Space Optic Performance Using Simulation Tools – OptSim
Abstract: ABSTRACTFree space optics (FSO) has received a great deal of attention lately both in the military and civilian information society due to its potentially high capacity, rapid deployment, portability and high security from deception and jamming. A proper understanding of optical signal propagation in different atmospheric conditions has become essential, and thus there arises the need to rationalize the effects of atmospheric channel on terrestrial FSO links. This paper studies …
Published in Trends in Opto-electro & Optical Communication · Vol. 1, Issue 1-3, 2011 · pp. 1–7 Read article
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Study Stator Voltage Control Method for Induction Motor Torque Control using MATLAB Simulation
Abstract: AbstractThis paper presents a study stator voltage control method for induction motor torque control using MATLAB simulation. This is to improve induction motor speed control. Speed sensor is used to control the speed in feedback and complete simulation of the direct torque control in closed-loop. The system is to be tested by use a MATLAB/ Simulink program. The different control methods are used to control the speed of induction motor …
Published in Journal of Microcontroller Engineering and Applications · Vol. 4, Issue 3, 2017 · pp. 18–24 Read article
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Experimental Studies and in silico Analysis on Quarum Sensing and System Simulation in Pseudomonas aeruginosa
Abstract: Pseudomonas aeruginosa is the most common pathogenic bacterium present in human microbial flora, biofilms, soil and water associated and support self microbial communications and survilance. The present study shows estimated protein concentration present in two days grown in Mullar hinton broth was resulted around 32.5 mg/ml. The studies in protein interaction on X-ray film with aqueous fruit and vegetable extracts showed good results with apple, straw berry, cucumber, grape, orrange, …
Published in Research and Reviews : Journal of Computational Biology · Vol. 7, Issue 1, 2018 · pp. 1–8 Read article
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Design and Performance of Semiconductor-Biosensor
Abstract: In this work, a high electron mobility transistor (HEMT) based biosensor is designed to detect the virus-protein. In this work, all the simulation-studies are carried out in the SILVACO-ATLAS physical simulator using the following models: Shockley Read Hall (SRH), band gap narrowing, Auger recombination, and Fermi Dirac statistics. Newton trap numerical solver is used in the device simulation. Conduction band engineering of the biosensor is studied. DC and RF properties …
Published in Journal of Semiconductor Devices and Circuits · Vol. 8, Issue 2, 2021 · pp. 1–13 Read article
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Performance Analysis of Dual Junction Solar Cell Devices utilizing Subcells of In0.51Ga0.49P and GaAs to Study Key Solar Cell Parameters via TCAD based Simulation
Abstract: In the present work, a multi-junction solar cell was designed to obtain better performance over single-junction solar cells. The proposed structure is composed of different layers of diverse semiconductor materials stacked on each other. Here, an In0.51Ga0.49P/GaAs double-junction solar cell was outlined as having a distinctive composite material (GaAs) as the tunneling junction. To optimize the solar cell's effectiveness, In0.47Ga0.15Al0.37P was used in the window layer and the back-surface field …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 829–837 Read article
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Comparative study of Drain current of Symmetric and Asymmetric DGMOSFET with simulation in Silvaco_TCAD Software
Abstract: For nano regime devices the double gate MOSFET is one of the most promising and attractive devices. The main idea of a Double Gate MOSFET is to control the Si channel very efficiently by choosing the Si channel width to be very small and by applying a gate contact to both sides of the channel. This concept helps to suppress short channel effects and leads to higher currents as compared …
Published in Journal of Semiconductor Devices and Circuits · Vol. 8, Issue 1, 2021 · pp. 1–13 Read article
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Numerical study of the impact of surfactant/polymer flooding on different reservoir wetting phases.
Abstract: Production of oil and gas by primary drive mechanism has always remained unsatisfactory since a greater percentage of the oil remains in the reservoir. Across the industry and academia various enhanced oil recovery interventions are been sought after to help recover more and more hydrocarbons from the reservoir. A simulation study is conducted using the UTCHEM simulator to help understand the mechanism that affect the various wetting characteristics of the …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 14–25 Read article
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Modeling and Simulation of a Grid-Connected Solar-Wind Hybrid Renewable Energy System with Controlled Inverter
Abstract: Solar and wind energy offer eco-friendly and renewable options to conventional energy sources, holding great promise for the future. This research delves into the modeling and simulation of a grid-connected solar-wind hybrid renewable energy system employing a controlled inverter. The study examines the individual photovoltaic (PV) and wind energy conversion systems and investigates their seamless integration to create a powerful hybrid generation system. To maximize energy use, the application of …
Published in Journal of Thermal Engineering and Applications · Vol. 13, Issue 1, 2026 · pp. 22–32 Read article
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Hardware/Software Co-Simulation of Gradient-based Edge Detectors: A Comparative Study
Abstract: Edge detection, a segmentation technique, produces an edge map that contains important information about the image. We realized Gradient-based Edge Detection Algorithms in FPGA hardware utilizing Hardware-Software Co-Simulation with the help of Simulink (Mathworks) and System Generator (Xilinx). We explored and utilized different gradient based edge detection operators Sobel-Fieldman, Robert and Prewitt Operator. After comparative analysis, we found both Sobel and Robert operators among the best with hardware realization of …
Published in Journal of Image Processing & Pattern Recognition Progress · Vol. 2, Issue 3, 2015 · pp. 30–37 Read article
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Study on Influence of Different Forms of Damping and Operating Temperature on Whirling Speeds of Rotors
Abstract: Accurate prediction of rotor whirl speeds is fundamentally important in the design of rotating machinery. There has been an impressive progress in the study of rotor dynamics in the last decade. The use of finite elements for the simulation of rotor system makes it possible to handle complex problems. Rotating shaft tends to bow out at certain speeds and whirl in a complicated manner. This phenomenon results from various causes …
Published in Trends in Machine design · Vol. 4, Issue 2, 2017 · pp. 41–55 Read article
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Dynamic Integration and Control of Fixed-Sp eed Wind Generation System with Multimachine System
Abstract: Since the average life of a wind generator is about 20 years, many of the wind systems will be employingconventional fixed-speed cage generators in spite of the superiority of the variable-speed devices. As theextent of wind integration continues to grow, the wind parks may need to be integrated with AC power grids.The integration to grids, particularly to weak ones, may give rise to transient conditions detrimental to boththe asynchronous as …
Published in Journal of Power Electronics and Power Systems · Vol. 1, Issue 1-2-3, 2011 · pp. 14–27 Read article