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1517 articles for “Numerical”
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Numerical Study and Comparison of Passive Mixing in Helical Micromixers
Abstract: A passive mixing inside three micromixers has been studied with water as the mixing fluid. Since the mixing at the micro-level is governed by species diffusion hence it is a time-consuming process that requires an extended length of micromixer for the required amount of mixing. The present study tackles this problem by introducing two helical micromixers, a Three-dimensional helical micromixer (TDHM), and TDHM having four inlets (TDHM-FO). These micromixers need …
Published in Journal of Polymer & Composites Read article
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Rotational Speed Influence on Weld Temperature in Friction Stir Lap Joint of Aluminium Alloy 6061 Using Numerical Simulation
Abstract: The weld quality assessment in friction stir welding depends on the choice of suitable weld parameters. Rotational speed is one such parameter. The study utilizes a computational fluid dynamics model to examine the influence of various rotational on the workpiece and weld interface temperature. The workpiece selected for this study is an Aluminium Alloy 6061, while the tool employed is a truncated conical pin tool featuring a conical shoulder in …
Published in Journal of Polymer & Composites · Vol. 12, Issue 2, 2024 · pp. 235–245 Read article
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Experimental and Numerical Studies on Radial Tensile Strength of Composite Rotor
Abstract: This paper describes the experimental and numerical studies on the radial tensile strength (RTS) of composite rotor. Carbon/epoxy composite rotors were fabricated using a filament winding process and their radial tensile strength was determined by diametric tensile testing of composite C-rings. The radial tensile strength of the composite rotor was measured as ~ 22 MPa and the failure was found to occur circumferentially symmetric about the horizontal plane of the …
Published in Journal of Polymer & Composites · Vol. 13, Issue 1, 2025 · pp. 985–996 Read article
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Numerical Simulation of Deep Convolutional Neural Network Based Flower Classification System
Abstract: There are more than 250,000 recognized floral plant forms in 350 families. Further more the order, the plant checks of structures, the gardening industry, live plantations and scientific flower classification instructions depend on fruitful flower classification, including a content-based image recuperation. A wide range of applications also includes flower portrayals. The manual classification is however tedious and tiresome, particularly when the picture foundation is perplexing, with a huge number of …
Published in Journal of Computer Technology & Applications · Vol. 12, Issue 3, 2021 · pp. 23–31 Read article
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Numerical Study of Melting Process of Phase Change Material Filled in Rectangular Cavity with Partially Active Walls
Abstract: This paper presents numerical investigation of melting process inside rectangular cavity with partially active walls. Enthalpy porosity approach is used to simulate convection dominated melting inside rectangular cavity. Gallium is used as phase change material. Numerical model is validated with available experimental results. Numerical investigation is carried out to investigate the influence on melting behaviour of phase change material for relative positions of hot and cold walls. Results show that …
Published in Journal of Thermal Engineering and Applications · Vol. 4, Issue 2, 2017 · pp. 32–38 Read article
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Numerical Simulations of Heat transfer in Microchannels for Cooling in Microsystems
Abstract: Fluid flow at microscale is being studied extensively in recent years. Understanding the heat transfer characteristics and fluid flow at these scales has relevance to electronics cooling, microheat exchangers, microelectro mechanical systems (MEMS) devices amongst others. In this investigation, three-dimensional models of microchannels with different geometrical cross-sections have been numerically simulated using the CFD software tool FLUENT. The numerical data obtained from this work provides better understanding and insight into …
Published in Recent Trends in Fluid Mechanics · Vol. 2, Issue 1, 2015 · pp. 15–20 Read article
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Review of Numerical Methods for Bird Impact Simulation on Aircraft Components
Abstract: In today’s world, aircraft flies on the risk of occurring bird strikes which lead to serious damage or failure of aircraft. Experimental methods being expensive, numerical methods are preferred for tests and certification purposes. This paper analyzes different approaches (Lagrangian, Eulerian, ALE, and SPH) which are used for numerical simulation of the bird. It also covers material Models, different geometries of bird, effect of parameters at windshield are highlighted. Furthermore, …
Published in Journal of Aerospace Engineering & Technology · Vol. 5, Issue 1, 2015 · pp. 23–29 Read article
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Numerical Investigation of Fluid Flow Inside A Rectangular Driven Cavity at Moderate Reynolds Numbers
Abstract: This work presents a numerical investigation of a 2-D incompressible driven cavity flow at moderate Reynolds numbers. Lid driven cavity is widely considered to be a benchmark problem because of its capability of displaying the cogency of different numerical schemes and easily analysing different fluid phenomenon in a simple geometrical arrangement. A steady numerical solution is determined using a pressure-based segregated algorithm; SIMPLE and the simulation is done in the …
Published in Journal of Aerospace Engineering & Technology · Vol. 7, Issue 3, 2017 · pp. 46–60 Read article
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Analytically and Numerically Predicting Base Shear Coefficient of Building Structure with the Variations of Response Reduction Factor based on BNBC 2020 by using ETABS
Abstract: Response reduction factor (RRF) influences the building base shear. Soil profile and seismiczone factors affect the variations of RRF. According to Bangladesh National Building Code(BNBC 2020), three (ordinary, intermediate, and special) different values of RRF for themoment-resisting frame are used for four seismic zones. In the present research, analytical(BNBC 2020) and numerical (ETABS) base shear coefficient ratio (BSC) are evaluated bythe variations of RRF (1, 2, 3, 4, 5, 6, …
Published in Journal of Offshore Structure and Technology · Vol. 9, Issue 1, 2022 · pp. 50–55 Read article
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The Evolution and Impact of Numbers: From Ancient Tallies to Quantum Computing: Review Article on Numbers
Abstract: Numbers are among the most fundamental constructs in human civilization, serving as the backbone of mathematics, science, technology, and virtually every aspect of daily life. They represent not only quantities and measures but also relationships, structures, and patterns that underpin the fabric of human understanding. From the earliest tallies etched on bones by prehistoric humans to the sophisticated numerical systems embedded in today’s artificial intelligence and quantum computing, the evolution …
Published in Research & Reviews: Discrete Mathematical Structures · Vol. 12, Issue 3, 2025 · pp. 15–19 Read article
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Numerical Investigation of AA5053 Through Equal Channel Angular Pressing Technique: An Overview
Abstract: Equal channel angular pressing is recognized as the predominant method for bulk severe plastic deformation processing and has been employed for refining the grain structure in numerous metals and alloys. This study utilized finite element analysis to examine the processing of metallic billets through simple shear deformation. For the study, the die channel angle was chosen based on achieving the minimum energy consumption to induce maximum uniform strain. Among the …
Published in Trends in Machine design · Vol. 12, Issue 3, 2025 · pp. 40–47 Read article
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A Numerical Analysis of Solar Chimney Power Plant and Study of Parameters Effecting it
Abstract: AbstractA comprehensive theoretical solar chimney power plant (SCPP) model has been introduced to overcome the energy crisis. Numerical simulation performed on the 2-dimensional models of the SCPP. Different numerical models are taken into account by changing the geometrical parameters of the chimney inlet, absorber temperature, and chimney inclination angle and chimney outlet geometry. Air velocity, heat transfer coefficient, pressure, and turbulent kinetic energy are the some parameters taken into account …
Published in Journal of Thermal Engineering and Applications · Vol. 5, Issue 2, 2018 · pp. 22–42 Read article
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Numerals Recognition for Urdu Script
Abstract: Optical Character Recognition is a difficult task due to the complexities of the script and varying location of the character in the image. Characters of Urdu script-based languages are even more difficult to recognize but they have not received much attention in spite of the fact that Urdu ranks sixth in the top 10 most-spoken primary languages (181 million people). The problem of numeral recognition in Urdu is due to …
Published in Current Trends in Signal Processing · Vol. 1, Issue 1-3, 2025 · pp. 11–16 Read article
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Numerical Methods of Optimization: A Review
Abstract: Optimization is an approach to finding the best result under given conditions. Several difficulties are occurred with the optimization of large scale problem. This paper is a review of numerical method of optimization techniques. Here discussed about different methods of numerical optimization for linear and nonlinear constrained and unconstrained system problem. Here we discussed about linear programing, integer programing, quadratic programing and nonlinear programing. The review is genera in nature, …
Published in Journal of Control & Instrumentation · Vol. 12, Issue 2, 2021 · pp. 19–25 Read article
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Numerical Simulation-based Comparative Study of P3HT-based Top Contact and Bottom Contact OTFTs
Abstract: AbstractIn this paper presents numerical simulation-based comparative study of bottom and top contact configurations of P3HT based organic thin-film transistor (OTFT). I-V characteristics has been evaluated using the TCAD simulator and comparison of the performance parameters of these devices has been presented. The dimensions of the transistors for all the proposed structures are kept the same for a valid comparison between them. The observed results were explained based on the …
Published in Journal of Electronic Design Technology · Vol. 10, Issue 3, 2019 · pp. 27–32 Read article
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Numerical Simulation and Modeling of Graphene Field Effect Transistors for High Frequency Applications
Abstract: AbstractIn this paper numerical simulation of graphene field effect transistor (GFET) has been performed using finite element method by solving Poisson's equation, continuity equation and energy balance equation self consistently. Various performance characteristics including charge distribution, band gap energy, transfer and output characteristics, electrostatic potential distribution and transconductance have been extracted.Keywords: Graphene field effect transistor (GFET), energy balance equation, mobility, ambipolar, numerical simulationCite this ArticleAshish Jha, Dwivedi ADD. Numerical Simulation …
Published in Journal of Microelectronics and Solid State Devices · Vol. 5, Issue 1, 2018 · pp. 27–33 Read article
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Numerical Simulation and Modeling of Self Heating in SOI MOSFET
Abstract: Abstract As the device size has been reduced the temperature increment of high-performance very large scale integrations (VLSIs) becomes a major issue. The self-heating effect and non-uniform power distribution in VLSIs, affect the performance of device. In this paper numerical simulation of self heating in SOI MOSFET has been performed. Poisson's equation, continuity equation, energy balance equation and heat flow equations have been solved self consistently using finite element method …
Published in Journal of Semiconductor Devices and Circuits · Vol. 5, Issue 3, 2018 · pp. 18–23 Read article
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Research on Numerical Simulation of Fluids Based on BIM Boundary Conditions in the Lower Fazi River in Taichung
Abstract: Building Information Model (BIM) application in Taiwan, After sorting out the literature, it is found that the water conservancy field is less used, Computer processing technology is becoming more and more mature, Engineering fluid simulation software has various parameter control and high precision, Simulation channel analysis can be controlled by establishing the edge model to control the water conservancy factor, In this study, BIM was introduced into the river section …
Published in Journal of Water Resource Engineering and Management · Vol. 8, Issue 3, 2021 · pp. 1–18 Read article
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Scientific Root of Binary Digits from The Islamic Point of View and the Impact of Arabic Numerals to the Development of Mathematics and Advancement of Modern Science and Technology
Abstract: The aim of this study is to evaluate and examine the scientific root of binary digits from the Islamic point of view and the impact of Arabic numerals to the development of mathematics and advancement of modern science and technology. The study utilizes contend analysis and secondary source of data as its methodology. The findings of the study revealed that the world now becomes a digital one and transformation to …
Published in Journal of Multimedia Technology & Recent Advancements · Vol. 1, Issue 3, 2014 · pp. 1–5 Read article
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Effect of Distributor Angle Variation on Flow Characteristics in a Hollow Frustum: A Numerical Study
Abstract: The key factor in determining the flow characteristics of a fluidized bed is the outlet vane angle of the distributor. It helps to predict the flow type, bed thickness and hence helps to obtain the required characteristics by selecting an appropriate angle. This study provides a detailed report about the analysis of important flow characteristics such as velocity, pressure, curl velocity, velocity swirl normal and turbulence with respect to different …
Published in Recent Trends in Fluid Mechanics · Vol. 2, Issue 3, 2015 · pp. 10–15 Read article