Relevant bibliographies by topics / Non-sinusoidal regimes

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Academic literature on the topic 'Non-sinusoidal regimes'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Non-sinusoidal regimes"

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Rudevich, N. V. "Current transformers are in regimes of non-sinusoidal signals." Science and Transport Progress, no. 37 (June 25, 2011): 105–8. http://dx.doi.org/10.15802/stp2011/9443.

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Saiki, H., G. Ngaile, and L. Ruan. "Characterization of Adhesive Strength of Phosphate Coatings in Cold Metal Forming." Journal of Tribology 119, no. 4 (1997): 667–71. http://dx.doi.org/10.1115/1.2833867.

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A test method is proposed to characterize adhesive strength of phosphate coatings based on the various deformation patterns at the tool-workpiece interface. The deformation patterns were induced by tools of different surface geometrical profiles, i.e., flat surface, sinusoidal surface, saw-tooth surface and multi-surface profiles, in a localized rod drawing technique. With change in the tool geometry, three deformation regimes were observed, i.e., full film lubrication regime, mixed regime, and seizure regimes, which were categorized by the level of friction coefficient attained, and the degre
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Ionita, Valentin, Lucian Petrescu, and Emil Cazacu. "Improved estimation of iron losses for non-sinusoidal voltages." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 37, no. 5 (2018): 1698–706. http://dx.doi.org/10.1108/compel-12-2017-0527.

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Purpose The electrical machines connected to modern electric power grids are non-sinusoidal excited, and their augmented losses, including iron losses, limit their working characteristics. This paper aims to propose a prediction method for iron losses in non-oriented grains (NO) FeSi sheets under non-sinusoidal voltage, involving an inverse classical Preisach hysteresis model and the time-integration of each loss component. Design/methodology/approach The magnetic history management in inverse Preisach model is optimized and a numerical Everett function is identified from measured symmetrical
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Krishnakumaran, R., Mohammed Raees, and Supratim Ray. "Shape analysis of gamma rhythm supports a superlinear inhibitory regime in an inhibition-stabilized network." PLOS Computational Biology 18, no. 2 (2022): e1009886. http://dx.doi.org/10.1371/journal.pcbi.1009886.

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Visual inspection of stimulus-induced gamma oscillations (30–70 Hz) often reveals a non-sinusoidal shape. Such distortions are a hallmark of non-linear systems and are also observed in mean-field models of gamma oscillations. A thorough characterization of the shape of the gamma cycle can therefore provide additional constraints on the operating regime of such models. However, the gamma waveform has not been quantitatively characterized, partially because the first harmonic of gamma, which arises because of the non-sinusoidal nature of the signal, is typically weak and gets masked due to a bro
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Gsell, Simon, Rémi Bourguet, and Marianna Braza. "Vortex-induced vibrations of a cylinder in planar shear flow." Journal of Fluid Mechanics 825 (July 20, 2017): 353–84. http://dx.doi.org/10.1017/jfm.2017.386.

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The system composed of a circular cylinder, either fixed or elastically mounted, and immersed in a current linearly sheared in the cross-flow direction, is investigated via numerical simulations. The impact of the shear and associated symmetry breaking are explored over wide ranges of values of the shear parameter (non-dimensional inflow velocity gradient, $\unicode[STIX]{x1D6FD}\in [0,0.4]$) and reduced velocity (inverse of the non-dimensional natural frequency of the oscillator, $U^{\ast }\in [2,14]$), at Reynolds number $Re=100$; $\unicode[STIX]{x1D6FD}$, $U^{\ast }$ and $Re$ are based on t
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Hu, Qiang-Qiang, and Yong-Liang Yu. "The hydrodynamic effects of undulating patterns on propulsion and braking performances of long-based fin." AIP Advances 12, no. 3 (2022): 035319. http://dx.doi.org/10.1063/5.0083912.

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Bio-inspired long-based undulating fin propulsion is commonly employed in biological autonomous underwater vehicles (BAUVs), while the hydrodynamic characteristics of various undulating patterns are different. To investigate what kind of undulating pattern has outstanding propulsion or braking performance for BAUVs in directional maneuvers, undulations with four basic undulating patterns are numerically examined under the Open-source Field Operation And Manipulation environment at the Reynolds number of 5 × 102, 5 × 103, and 5 × 104, corresponding to viscous, transitional, and inertial flow re
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Tutty, O. R., and T. J. Pedley. "Oscillatory flow in a stepped channel." Journal of Fluid Mechanics 247 (February 1993): 179–204. http://dx.doi.org/10.1017/s0022112093000436.

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Two-dimensional, unsteady flow of a viscous, incompressible fluid in a stepped channel has been studied by the numerical solution of the Navier–Stokes equation using an accurate finite-difference method.With a sinusoidal mass flow rate, the problem has three governing parameters: the Reynolds number, the Strouhal number, and the step height. The effects on the flow of varying all three parameters has been investigated systematically. In appropriate parameter regimes, a strong ‘vortex wave’ is generated during the forward phase when the flow is over the step into the expansion. Secondary effect
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Kamrath, Matthew J. "Comparison of power probability density functions for vertical sound propagation." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 3 (2023): 5543–50. http://dx.doi.org/10.3397/in_2023_0787.

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When sound travels through the atmosphere, fluctuations in the wind velocity and temperature generate fluctuations in the sound amplitude and phase, which makes source detection, localization, and identification more difficult. While there are several parametric probability density functions for the signal power, the previous literature has not shown which model performs best in a wide variety of environments. This paper compares the noncentral Erlang, gamma, compound gamma, generalized gamma, and log exponentially modified Gaussian distributions' ability to approximate the signal power distri
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Cheng, W., D. I. Pullin, and R. Samtaney. "Large-eddy simulation of flow over a grooved cylinder up to transcritical Reynolds numbers." Journal of Fluid Mechanics 835 (November 27, 2017): 327–62. http://dx.doi.org/10.1017/jfm.2017.767.

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We report wall-resolved large-eddy simulation (LES) of flow over a grooved cylinder up to the transcritical regime. The stretched-vortex subgrid-scale model is embedded in a general fourth-order finite-difference code discretization on a curvilinear mesh. In the present study $32$ grooves are equally distributed around the circumference of the cylinder, each of sinusoidal shape with height $\unicode[STIX]{x1D716}$, invariant in the spanwise direction. Based on the two parameters, $\unicode[STIX]{x1D716}/D$ and the Reynolds number $Re_{D}=U_{\infty }D/\unicode[STIX]{x1D708}$ where $U_{\infty }$
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Ahmed, Gulraiz, Mathieu Sellier, Yeaw Chu Lee, Mark Jermy, and Michael Taylor. "Rheological effects on the levelling dynamics of thin fluid films." International Journal of Numerical Methods for Heat & Fluid Flow 25, no. 8 (2015): 1850–67. http://dx.doi.org/10.1108/hff-10-2013-0295.

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Purpose – The purpose of this paper is to investigate numerically the effect of rheology on the leveling of thin fluid films on horizontal solid substrates. Design/methodology/approach – A mathematical model based on the lubrication approximation which defines non-Newtonian rheology using a Power-law model is presented. The rheology is described by two parameters: the consistency factor and the flow behavior index. The resulting highly non-linear coupled set of equations is discretized using Finite-Difference and the resulting algebraic system is solved via an efficient Multigrid algorithm. Fi
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Dissertations / Theses on the topic "Non-sinusoidal regimes"

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Haugan, Thomas Sagvold. "Smart Grid: Shunt Compensation in Non-Sinusoidal Regimes." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-20732.

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The electric power theory is of fundamental importance in most aspects of electric power engineering, enabling to analyze and control the grid based on an unambiguous physical interpretation of the power and current flow. The futuristic SmartGrid concept will include scenarios of potentially very challenging network conditions, due to large impact of non-linear loads, combined with unsymmetric and non-sinusoidal voltage regimes. New and more advanced power theories are needed, in order to maintain correct physical understanding of the power grid, independently of voltage conditions. Moreover s
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Иерусалимова, Татьяна Сергеевна. "Влияние несинусоидальных режимов роботы электрических сетей на процессы электропотребления". Thesis, НТУ "ХПИ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22731.

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Диссертация на соискание ученой степени кандидата технических наук по специальности 05.14.02 – электрические станции, сети и системы. – Национальный технический университет – "Харьковский политехнический институт", Харьков 2016. Диссертация посвящена решению важной научно-технической задачи влияния несинусоидальных режимов работы электрических сетей на процессы электропотребления в точке подключения неидеальной (несимметричной и нелинейной) нагрузки к сети с несимметричным и несинусоидальным напряжением. На основе теоретических исследований, использующих единый векторный подход, получена вект
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Ієрусалімова, Тетяна Сергіївна. "Вплив несинусоїдальних режимів роботи електричних мереж на процеси електроспоживання". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22730.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.14.02 – електричні станції, мережі і системи. – Національний технічний університет – "Харківський політехнічний інститут", Харків 2016. Дисертація присвячена вирішенню важливої науково-технічної задачі впливу несинусоїдальних режимів роботи електричних мереж на процеси електроспоживання в точці підключення неідеального (несиметричного і нелінійного) навантаження до мережі з несиметричною і несинусоїдальною напругою. На основі теоретичних досліджень, що використовують єдиний векторний підхід, отримана векторн
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Manescu, Léonardo-Géo. "L'étude du régime non-sinusoïdal dans les systèmes électriques." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0063.

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Dans le cadre de cette thèse on s'est intéressé à l'étude, par simulation, du fonctionnement des systèmes électriques en régime non-sinusoïdal, ainsi qu'aux effets de la pollution harmonique sur les éléments du système. Nous avons tout d'abord révisé les principaux paramètres du régime non-sinusoïdal (en proposant en complément les facteurs de distorsion intégratifs et dérivatifs) et la théorie de la puissance. Ensuite nous avons étudié la modélisation des principaux types de sources d'harmoniques, en adaptant des modèles existants ou en développant de nouveaux (pour les convertisseurs et les
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Cester, Christophe. "Étude des pertes magnétiques supplémentaires dans les machines asynchrones alimentées par onduleur à modulation de largeur d'impulsion." Grenoble INPG, 1996. http://www.theses.fr/1996INPG0068.

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La banalisation de l'emploi d'onduleras à Modulation de Largeur d'Impulsion pour l'alimentation des machines asynchrones rend indispensable l'étude des pertes magnétiques supplémentaires qu'ils engendrent. L'influence des paramètres principaux de la MLI, fréquence de hachage et paramètre de modulation est étudiée, grâce à un banc de mesure de type cadre Epstein spécialement adapté. L'emploi d'un moteur instrumenté de 4 kW permet d'observer les formes d'ondes réellement présentes dans les différentes parties du circuit magnétique et de montrer que la déformation du signal MLI entraîne une forte
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Books on the topic "Non-sinusoidal regimes"

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Provan, Drew, Trevor Baglin, Inderjeet Dokal, Johannes de Vos, and Hassan Al-Sader. Haematopoietic stem cell transplantation. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199683307.003.0009.

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Haemopoietic stem cell transplantation (SCT) - Indications for haemopoietic SCT - Allogeneic SCT - Autologous STC - Investigations for BMT/PBSCT - Pretransplant investigation of donors - Bone marrow harvesting - Peripheral blood stem cell mobilization and harvesting - Microbiological screening for stem cell cryopreservation - Stem cell transplant conditioning regimens - Infusion of cryopreserved stem cells - Infusion of fresh non-cryopreserved stem cells - Blood product support for SCT - Graft-versus-host disease (GvHD) prophylaxis - Acute GvHD - Chronic GvHD - Veno-occlusive disease (syn. sin
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Conference papers on the topic "Non-sinusoidal regimes"

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Nicolae, Ileana-Diana, Petre-Marian Nicolae, and Radu-Florin Marinescu. "Evaluating the Non-sinusoidal and Non-symmetric Regimes from a Railway Supplying Substation." In 2018 International Power Electronics Conference (IPEC-Niigata 2018-ECCE Asia). IEEE, 2018. http://dx.doi.org/10.23919/ipec.2018.8507949.

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Metwally, Hossam M., and Raj M. Manglik. "A Computational Study of Enhanced Heat Transfer in Laminar Flows of Non-Newtonian Fluids in Corrugated-Plate Channels." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1277.

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Abstract The enhanced heat transfer behavior of laminar shear-thinning, power-law fluid flows in sinusoidal corrugated-plate channels is investigated. With duct plates at uniform wall temperature, periodically developed flows are considered for a wide range of channel corrugation aspect ratio (0 ≤ γ ≤ 1), flow rates (10 ≤ Reg ≤ 1500), and pseudo-plastic flow behavior indices (n = 0.5, 0.8, and 1.0). Typical velocity and temperature distributions, along with extended results for isothermal friction factor f and Collburn factor j are presented. The enhanced forced convection is found to be stron
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Bellizzi, Sergio, Renaud Côte, and Marc Pachebat. "Experimental Study of an Acoustic System Coupled to a Nonlinear Membrane Under Multi-Frequency Forcing." In ASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/detc2013-12817.

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In this paper, an experimental study of the coupling of a 2 degree-of-freedom acoustic medium to a nonlinear visco-elastic membrane under multi-frequency forcing is presented. When the excitation is sinusoidal, we observe classical results: non-linear effects tend to damp pressure in the linear system. When the excitation is quasi-periodic with two frequencies, various aspects of quasi-periodic regimes are observed. Some regimes exhibit only the two excitation frequencies in their spectrum, other display a more complicated, but mostly discrete, spectrum. These stable quasi-periodic regimes can
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Andrei, Horia, Costin Cepisca, Sorin Dan Grigorescu, and Paul Andrei. "Sensitivity analysis of the Multiple FeedBack filter in non-sinusoidal regime." In 2010 XIth International Workshop on Symbolic and Numerical Methods, Modeling and Applications to Circuit Design (SM2ACD). IEEE, 2010. http://dx.doi.org/10.1109/sm2acd.2010.5672323.

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Andrei, H., L. Nastase, E. Diaconu, C. Cepisca, Sorin Dan Grigorescu, and P. Andrei. "Contributions on sensitivity analysis for the analog two-port networks in non-sinusoidal regime." In IEEE EUROCON 2011 - International Conference on Computer as a Tool. IEEE, 2011. http://dx.doi.org/10.1109/eurocon.2011.5929174.

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Iacobici, Nicolae Luca, Emil Cazacu, Mihaela Frigura-Iliasa, and Flaviu Mihai Frigura-Iliasa. "Computer Based Analysis for the Parameters of a Distribution Transformer in a Non-Sinusoidal Regime." In 2019 IEEE 17th World Symposium on Applied Machine Intelligence and Informatics (SAMI). IEEE, 2019. http://dx.doi.org/10.1109/sami.2019.8782753.

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Andrei, H., C. Cepisca, and F. Spinei. "The Modelling of the Power Factor in Steady State Non Sinusoidal Regime with Mathcad Techniques." In 2006 IEEE International Conference on Automation, Quality and Testing, Robotics. IEEE, 2006. http://dx.doi.org/10.1109/aqtr.2006.254497.

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Diga, Silvia-Maria, Nicolae Diga, and Andi-Daniel Grigore. "Particularities of photometric calculation and non-sinusoidal operation regime of luminaires with high pressure sodium vapour lamps." In 2018 Seventh Balkan Conference on Lighting (BalkanLight). IEEE, 2018. http://dx.doi.org/10.1109/balkanlight.2018.8546954.

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Nowak, Nicholas, Muhammad Ali Bablu, and James Manimala. "Investigation of Yarn Pullout As a Mechanism of Ballistic Performance Enhancement in Silica Nanoparticle-Impregnated Kevlar Fabric." In ASME 2023 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/smasis2023-111430.

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Abstract Impregnating Kevlar fabric with silica nanoparticles is known to augment its mechanical properties, especially under shear deformation. Silica nanoparticle-impregnated Kevlar (SNK) fabric could therefore display improved ballistic performance. In this study, firstly, the ballistic performance of SNK with various percentages by weight of nanoparticle addition and number of layers is investigated utilizing compressed air gun experiments. A colloid-based process is used to impregnate spherical silica nanoparticles having 80–100 nm diameter into Kevlar 29-based K745 style plain woven fabr
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Shojaee Fard, M. H., and A. R. Noorpoor. "Numerical Simulation of Heat and Fluid Flow Behavior in a Pipe Flow With Sinusoidal Boundary Condition." In ASME 2003 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ices2003-0638.

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In this investigation a two-dimensional airflow and heat transfer with sinusoidal boundary condition analysis was conducted. Both laminar and turbulent sinusoidal pipe flows were investigated numerically for Remax = 2000, 10000, 20000 and 60000. The results are compared with experimental results of previous investigators [2], [5]. Comparing non-dimensional velocity amplitudes also checks predictions of the flow regime on present sinusoidal flow conditions. A high Reynolds number RNG k-ε turbulence model was used for turbulent flows. An available code, which is basis on finite volume and can so
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