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Journal articles on the topic 'Transient regime'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Litvinov, Ivan, Daniil Suslov, Evgeny Gorelikov, and Sergey Shtork. "Experimental Study of Transient Flow Regimes in a Model Hydroturbine Draft Tube." Energies 14, no. 5 (2021): 1240. http://dx.doi.org/10.3390/en14051240.

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Swirling flow with the formation of a precessing vortex core (PVC) in the draft tube model of a hydroturbine was studied. Experiments were performed on an aerodynamic setup under transient operating conditions of the hydroturbine. The turbine operating conditions were varied by continuously changing the flow rate at a constant runner speed. The transition from the partial load regime, when a precessing vortex core is formed, to the best efficiency point without a core is considered. Applied to this task, a comparison of the windowed Fourier transform with wavelet analysis is given. The depende

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2

Holleman, Rusty C., and Mark T. Stacey. "Transient dispersion regimes." Journal of Fluid Mechanics 736 (November 1, 2013): 130–49. http://dx.doi.org/10.1017/jfm.2013.535.

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AbstractCharacterizing scalar dispersion is a key concern in a wide variety of applications, including both steady-state and time-dependent studies of wastewater outfalls, salinity distribution in estuaries, and the spreading of pollutants from industrial spills. As the size of a scalar plume grows with respect to the size of the containing water body, the effective dispersion varies, from the well-known ${ \sigma }_{x}^{2} \sim {t}^{3} $ behaviour for a plume enveloped in a region of linear shear, to the ${ \sigma }_{x}^{2} \sim t$ behaviour at the limit of a laterally well-mixed plume. We in

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3

HEATON, C. J. "Optimal linear growth in spiral Poiseuille flow." Journal of Fluid Mechanics 607 (June 30, 2008): 141–65. http://dx.doi.org/10.1017/s0022112008001870.

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Computations are presented of the optimal linear growth in spiral Poiseuille flow(SPF). The aim is to complement a recent presentation of the complete neutral curves for this flow (Cotrell & Pearlstein, J. Fluid Mech. vol. 509, 2004, p. 331) with a study of the transient growth possible in the stable parameter regions. Maximum growth is computed over the full range of axial and azimuthal wavenumbers for the same three test cases as considered by Cotrell & Pearlstein: radius ratio η = −0.5 and rotation rate ratio μ= -0.5, 0 and 0.5. A connection is established between two regimes of opt

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4

LATINI, MARCO, and ANDREW J. BERNOFF. "Transient anomalous diffusion in Poiseuille flow." Journal of Fluid Mechanics 441 (August 15, 2001): 399–411. http://dx.doi.org/10.1017/s0022112001004906.

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We revisit the classical problem of dispersion of a point discharge of tracer in laminar pipe Poiseuille flow. For a discharge at the centre of the pipe we show that in the limit of small non-dimensional diffusion, D, tracer dispersion can be divided into three regimes. For small times (t [Lt ] D−1/3), diffusion dominates advection yielding a spherically symmetric Gaussian dispersion cloud. At large times (t [Gt ] D−1), the flow is in the classical Taylor regime, for which the tracer is homogenized transversely across the pipe and diffuses with a Gaussian distribution longitudinally. However,

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5

Zhu, Jia Song. "An Ensemble Learning Short-Term Traffic Flow Forecasting with Transient Traffic Regimes." Applied Mechanics and Materials 97-98 (September 2011): 849–53. http://dx.doi.org/10.4028/www.scientific.net/amm.97-98.849.

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Short-term traffic flow forecasting has a rich and substantive research history. For layered hybrid forecasting approaches, traffic flow series are classified into distinct regimes based on characteristics of different traffic conditions so that regime-specific forecasting models can be trained to adequately and consistently approximate dynamic traffic dynamic behaviors. However, traffic regimes are inherently changing and transient, making it a challenging task to perform regime-specific forecasting. In this paper, an ensemble learning approach is proposed and regime-based forecasting models

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6

Zhang, Chuang, Samuel Huberman, and Lei Wu. "On the emergence of heat waves in the transient thermal grating geometry." Journal of Applied Physics 132, no. 8 (2022): 085103. http://dx.doi.org/10.1063/5.0102227.

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The propagation of heat in the transient thermal grating geometry is studied based on the phonon Boltzmann transport equation (BTE) in different phonon transport regimes. Our analytical and numerical results show that the phonon dispersion relation and temperature govern the emergence of heat waves. For the frequency-independent BTE, a heat wave manifests in both the ballistic and hydrodynamic regimes. For the frequency-dependent BTE, heat waves are present in the hydrodynamic regime but may be absent in the ballistic regime. In the context of real materials, we predict the emergence of heat w

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7

Bergou, János A., and Mark Hillery. "Pump-coupled masers: Transient regime." Physical Review A 44, no. 11 (1991): 7502–8. http://dx.doi.org/10.1103/physreva.44.7502.

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8

Mutabaruka, Patrick, Krishna Kumar, Kenichi Soga, Farhang Radjai, and Jean-Yves Delenne. "Transient dynamics of a 2D granular pile." European Physical Journal - E 38, no. 47 (2015): 1–7. https://doi.org/10.1140/epje/i2015-15047-x.

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We investigate by means of Contact Dynamics simulations the transient dynamics of a 2D granular pile set into motion by applying shear velocity during a short time interval to all particles. The spreading dynamics is directly controlled by the input energy whereas in recent studies of column collapse the dynamics scales with the initial potential energy of the column. As in column collapse, we observe a power-law dependence of the runout distance with respect to the input energy with nontrivial exponents. This suggests that the power-law behavior is a generic feature of granular dynamics, and

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9

Wei, Zhang, Jiang Ruizhong, Xu Jianchun, Gao Yihua, and Yang Yibo. "Production performance analysis for horizontal wells in composite coal bed methane reservoir." Energy Exploration & Exploitation 35, no. 2 (2017): 194–217. http://dx.doi.org/10.1177/0144598716687930.

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In this paper, the mathematical model of production performance analysis for horizontal wells in composite coal bed methane reservoir is introduced. In this model, two regions with different formation parameters are distinguished, and multiple mechanisms are considered including desorption, diffusion, and viscous flow. Then the solution of horizontal well performance analysis model is obtained by using point source function method, Laplace transform, and Stehfest algorithm comprehensively. The solution of the proposed model is verified with previous work thoroughly. The pressure transient anal

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10

Dou, Xiangji, Sujin Hong, Zhen Tao, Jiahao Lu, and Guoqiang Xing. "Transient Pressure and Rate Behavior of a Vertically Refractured Well in a Shale Gas Reservoir." Energies 15, no. 12 (2022): 4345. http://dx.doi.org/10.3390/en15124345.

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Refracturing treatment is widely used to enhance the well productivity in shale gas reservoirs, particularly for initially fractured wells with low productivity. The principal of this work is based on the transient behavior of pressure and rate for a vertically refractured well in a shale gas reservoir, considering the fracture reorientation and adsorption and desorption property. Based on the point-source theory and Laplace transform, a semi-analytical solution for a refractured well is obtained by coupling the point-source solution of a shale gas reservoir and the solution of artificial frac

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11

Safaryan, V. S. "STUDY OF TRANSIENT AND STATIONARY OPERATION MODES OF SYNCHRONOUS SYSTEM CONSISTING IN TWO MACHINES." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 60, no. 3 (2017): 228–36. http://dx.doi.org/10.21122/1029-7448-2017-60-3-228-236.

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The solution of the problem of reliable functioning of an electric power system (EPS) in steady-state and transient regimes, prevention of EPS transition into asynchronous regime, maintenance and restoration of stability of post-emergency processes is based on formation and realization of mathematical models of an EPS processes. During the functioning of electric power system in asynchronous regime, besides the main frequencies, the currents and voltages include harmonic components, the frequencies of which are multiple of the difference of main frequencies. At the two-frequency asynchronous r

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12

Suslov, D. A., I. V. Litvinov, S. I. Shtork, and E. U. Gorelikov. "The Influence of Transient Regimes on Unsteady Vortex Phenomena in the Model of the Draft Tube of the Hydraulic Turbine." Siberian Journal of Physics 14, no. 4 (2019): 55–68. http://dx.doi.org/10.25205/2541-9447-2019-14-4-55-68.

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This article is devoted to study the swirling flow with the formation of the precessing vortex core (PVC) in the cone of the model of the draft tube of the hydraulic turbine. The experiments were carried out on the aerodynamic set-up both in stationary and in transient regimes of operation of the hydraulic turbine. The hydraulic turbine operating conditions were varied by continuously changing the flow rate at a constant rotor speed. The formation of the PVC in the flow and the maximum level of pressure pulsations in the regime modeling the partial load regime of a turbine are revealed. The bo

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13

Kaiser, Amandine, Nikki Vercauteren, and Sebastian Krumscheid. "Sensitivity of the polar boundary layer to transient phenomena." Nonlinear Processes in Geophysics 31, no. 1 (2024): 45–60. http://dx.doi.org/10.5194/npg-31-45-2024.

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Abstract. Numerical weather prediction and climate models encounter challenges in accurately representing flow regimes in the stably stratified atmospheric boundary layer and the transitions between them, leading to an inadequate depiction of regime occupation statistics. As a consequence, existing models exhibit significant biases in near-surface temperatures at high latitudes. To explore inherent uncertainties in modeling regime transitions, the response of the near-surface temperature inversion to transient small-scale phenomena is analyzed based on a stochastic modeling approach. A sensiti

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14

Martin, Alexandre, Jean-Yves Trepanier, Marcelo Reggio, and Guo Xueyan. "Transient Ablation Regime in Circuit Breakers." Plasma Science and Technology 9, no. 6 (2007): 653–56. http://dx.doi.org/10.1088/1009-0630/9/6/02.

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15

Szeftel, Jacob, Laure Sandeau, Nicolas Sandeau, Camille Delezoide, and Antoine Khater. "Transient regime in second harmonic generation." Optics Communications 305 (September 2013): 107–12. http://dx.doi.org/10.1016/j.optcom.2013.04.053.

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16

Kosmatskiy, Ya Ig, M. Yu Egorov, and V. D. Lychakov. "Flow analysis in seamless hot-extruded pipes with helical inner ribbing surface." Journal of Physics: Conference Series 2088, no. 1 (2021): 012011. http://dx.doi.org/10.1088/1742-6596/2088/1/012011.

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Abstract The article is devoted to numerical simulation of heat transfer processes occurring during the flow of a coolant in seamless hot-extrusion pipes with a spiral inner fin surface (TMK-IRS). A description of the numerical modeling technique is given along with the interface of the program used to create different types of internal fins. Thermohydraulic analysis of finned pipes for transient, turbulent and laminar flow regimes has been carried out. An estimate of the critical Reynolds number characterizing the transition to a turbulent regime, the nature of the transient flow regime in co

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17

Xiao, Cong, Yu Dai, Leng Tian, et al. "A Semianalytical Methodology for Pressure-Transient Analysis of Multiwell-Pad-Production Scheme in Shale Gas Reservoirs, Part 1: New Insights Into Flow Regimes and Multiwell Interference." SPE Journal 23, no. 03 (2017): 885–905. http://dx.doi.org/10.2118/187958-pa.

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Summary Recently, a multiwell-pad-production (MWPP) scheme has been the center of attention as a promising technology to improve shale-gas (SG) recovery. However, the increasing possibility of multiwell pressure interference (MWPI) in the MWPP scheme severely distorts flow regimes, which strongly challenges the traditional pressure-transient analysis methods that focus on single multifractured horizontal wells (SMFHWs) without MWPI. Therefore, a methodology to identify pressure-transient response of the MWPP scheme with and without MWPI is urgent. To fill this gap, a new semianalytical pressur

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18

Khalillolahi, A., and B. Sammakia. "The Thermal Capacity Effect Upon Transient Natural Convection in a Rectangular Cavity." Journal of Electronic Packaging 112, no. 4 (1990): 357–66. http://dx.doi.org/10.1115/1.2904390.

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Transient natural convection in a rectangular enclosure is analyzed using a finite difference scheme. The enclosure is adiabatic and filled with water. The buoyancy induced flow is generated by a flat vertical uniform flux surface that has a finite thermal capacity. The full two-dimensional equations representing conservation of mass, momentum, and energy are solved in their time-dependent form. The solution technique used is a modified finite difference procedure very similar to Simple Arbitrary Lagrangian Eulerian (SALE) technique. Two values of surface thermal capacity are investigated, eac

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19

Gherman, Bogdan, Ion Mălăel, Florin Florean, and Ionuţ Porumbel. "Experimental combustion chamber simulation at transient regimes." E3S Web of Conferences 85 (2019): 02006. http://dx.doi.org/10.1051/e3sconf/20198502006.

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The transient regimes in a combustion chamber has to be as short as possible because flame front position and thickness can destroy the combustion chamber in couple seconds. The simulation of such a regime has to be performed unsteady. An experimental combustion chamber it is simulated at two unsteady regimes to see the flame front structure and comparison it is made with the experimental data to validate the results. For this analysis Ansys CFX was used and the turbulent model was DES while the combustion model was Eddy Dissipation. The two cases show different flame front structures while th

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20

Jouini, Oualid, and Yves Dallery. "MONOTONICITY PROPERTIES FOR MULTISERVER QUEUES WITH RENEGING AND FINITE WAITING LINES." Probability in the Engineering and Informational Sciences 21, no. 3 (2007): 335–60. http://dx.doi.org/10.1017/s0269964807000010.

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We consider a markovian multiserver queue with a finite waiting line in which a customer may decide to leave and give up service if its waiting time in queue exceeds its random deadline. We focus on the performance measure in terms of the probability of being served under both transient and stationary regimes. We investigate monotonicity properties of first and second order of this performance with respect to the buffer size, say k. Under the stationary regime, we prove that our service level is strictly increasing and concave in k, whereas we prove under the transient regime that it is only i

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21

Foster, E. A. D. "A Causal Bifurcation Sequence Producing a Chaotic Transient Regime." International Journal of Bifurcation and Chaos 07, no. 02 (1997): 319–30. http://dx.doi.org/10.1142/s0218127497000212.

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An organized sequence of codimension-1 bifurcations is investigated. This bifurcation sequence is shown to be generic for a class of noninvertible scalar maps containing symmetry, and is believed to occur commonly in both discrete and continuous dynamical systems. Particular dynamics are specified initially, in which chaotic sets with symmetry evolve from attracting to transients and back to attracting. The required dynamics limit the bifurcation structures possible, which in turn constrain the functional form of the dynamical system. The canonical scalar map producing these dynamics is determ

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22

Гуйо, Г. А., О. Н. Павлова та А. Н. Павлов. "Диагностика изменений динамики сложных систем по переходным процессам на основе многомасштабного вейвлет-анализа". Письма в журнал технической физики 49, № 2 (2023): 7. http://dx.doi.org/10.21883/pjtf.2023.02.54277.19255.

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With the use of multiresolution wavelet analysis, the possibilities of diagnosing changes in the dynamical regimes of complex systems from transient processes depending on the rate of variations of control parameters are studied. Estimates are made of the minimum sample size that allows diagnosing a change in the dynamical regime of systems with self-sustained oscillations on the example of transient processes during the formation or destruction of synchronous chaotic oscillations.

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23

Gebhart, B. "Transient Response and Disturbance Growth in Vertical Buoyancy-Driven Flows." Journal of Heat Transfer 110, no. 4b (1988): 1166–74. http://dx.doi.org/10.1115/1.3250618.

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The basic physical characteristics of flow response to a changed bounding-surface energy input is reviewed. Response regimes are delineated in terms of locally laminar, unstable, transition, and turbulent flows and dimensionality and regimes intermediate to the others. Very large transient heat transfer effects arise. A key general question is how such regimes become unstable and progress to turbulence. Transient disturbance growth analysis is very difficult and few results are available. This paper develops a general and purely numerical formulation for two-dimensional transient response and

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24

Pégeot, Martin, Tom Colinot, Jean-Baptiste Doc, Vincent Fréour, and Christophe Vergez. "Playability of self-sustained musical instrument models: statistical approaches." Acta Acustica 8 (2024): 74. https://doi.org/10.1051/aacus/2024075.

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Self-sustained musical instruments, such as wind or bowed string instruments, are complex nonlinear systems. They admit a wide variety of regimes, which sometimes coexist for certain values of the control parameters. This phenomenon is known as multistability. With fixed parameters, the selection of a regime and the shape of the transient depend not only on the values of the control parameters, but also on the initial conditions. In this article, we focus on the statistical influence of initial conditions on regime selection and transient duration. An existing sample-based method called basin

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25

Saxena, Ashok, and Kip O. Findley. "A Model to Account for the Effects of Load Ratio and Hydrogen Pressure on the Fatigue Crack Growth Behavior of Pressure Vessel Steels." Materials 17, no. 17 (2024): 4308. http://dx.doi.org/10.3390/ma17174308.

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A phenomenological model for estimating the effects of load ratio R and hydrogen pressure PH2 on the hydrogen-assisted fatigue crack growth rate (HA–FCGR) behavior in the transient and steady-state regimes of pressure vessel steels is described. The “transient regime” is identified with crack growth within a severely embrittled zone of intense plasticity at the crack tip. The “steady-state” behavior is associated with the crack growing into a region of comparatively lower hydrogen concentration located further away from the crack tip. The model treats the effects of R and PH2 as being function

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26

Spunei, Elisabeta, Naomi-Ionela Soanda, Mihaela Martin, and Gheorghe Stefan Matasaru. "Analyzing the operation of a hybrid photovoltaic-diesel-generator-grid hybrid microsystem—Case study." Journal of Infrastructure, Policy and Development 8, no. 9 (2024): 7777. http://dx.doi.org/10.24294/jipd.v8i9.7777.

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The scientific objective of this study is to demonstrate how a hybrid photovoltaic-grid-generator microsystem responds under transient regime to varying loads and grid disconnection/reconnection. The object of the research was realized by acquiring the electrical magnitudes from the three PV systems (25 kW, 40 kW, and 60 kW) connected to the grid and the consumer (on-grid), during the technological process where the load fluctuated uncontrollably. Similar recordings were also made for the transient regime caused by the grid disconnection, diesel generator activation (450 kVA), its synchronizat

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27

Jha, P. K., A. A. Svidzinsky, and M. O. Scully. "Coherence enhanced transient lasing in XUV regime." Laser Physics Letters 9, no. 5 (2012): 368–76. http://dx.doi.org/10.7452/lapl.201110144.

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28

Andrianov, E. S., A. A. Pukhov, A. V. Dorofeenko, A. P. Vinogradov, and A. A. Lisyansky. "Dynamics of the transient regime of spaser." Journal of Communications Technology and Electronics 56, no. 12 (2011): 1471–79. http://dx.doi.org/10.1134/s1064226911120151.

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29

Vaissiere, J. C., M. Elkssimi, and J. P. Nougier. "Transient regime of hot carriers in InP." Semiconductor Science and Technology 7, no. 3B (1992): B308—B311. http://dx.doi.org/10.1088/0268-1242/7/3b/077.

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30

Coppa, P., Dai Jinmin, and G. Ruffino. "The transient regime of a multiwavelength pyrometer." International Journal of Thermophysics 14, no. 3 (1993): 599–607. http://dx.doi.org/10.1007/bf00566057.

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31

Tenzer, Fabian M., Ilia V. Roisman, and Cameron Tropea. "Fast transient spray cooling of a hot thick target." Journal of Fluid Mechanics 881 (October 24, 2019): 84–103. http://dx.doi.org/10.1017/jfm.2019.743.

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Spray cooling of a hot target is characterized by strong heat flux and fast change of the temperature of the wall interface. The heat flux during spray cooling is determined by the instantaneous substrate temperature, which is illustrated by boiling curves. The variation of the heat flux is especially notable during different thermodynamic regimes: film, transitional and nucleate boiling. In this study transient boiling curves are obtained by measurement of the local and instantaneous heat flux produced by sprays of variable mass flux, drop diameter and impact velocity. These spray parameters

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32

Hammami, A., A. Fernandez Del Rincon, F. Chaari, F. Viadero Rueda, and M. Haddar. "Dynamic Behaviour of Back to Back Planetary Gear in Run Up and Run Down Transient Regimes." Journal of Mechanics 31, no. 4 (2015): 481–91. http://dx.doi.org/10.1017/jmech.2014.95.

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AbstractThe operating cycle of planetary gear transmissions is composed by the run up regime, steady state regime with fixed speed and the run down regime. Run up and run down are one of the main non stationary excitations for planetary gearboxes. This paper investigates, in these two regimes, the dynamic behaviour of a special configuration of two stages planetary gear which are mounted back-to-back. A dynamic model is developed. The variability of speed in the run up and run down regimes is included in the model. The computation of the dynamic response shows that additional sidebands instabi

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33

Mier, Frank, Raj Bhakta, Nicolas Castano, John Garcia, and Michael Hargather. "Experimental Measurement of Steady and Transient Liquid Coiling with High-Speed Video and Digital Image Processing." Fluids 3, no. 4 (2018): 107. http://dx.doi.org/10.3390/fluids3040107.

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Liquid coiling occurs as a viscous fluid flows into a stagnant reservoir causing a localized accumulation of settling material, which coils into a stack as it accumulates. These coiling flows are broadly characterized into three primary coiling regimes of viscous, gravitational, or inertial coiling, based on the velocity of the falling fluid, the height of the fall, the radius of the fluid rope, the stack height, and the fluid properties including viscosity. A computer-controlled flow delivery apparatus was developed here to produce precisely controlled flow conditions to study steady and tran

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34

Garau, M., M. J. Nieves, and I. S. Jones. "Alternating Strain Regimes for Failure Propagation in Flexural Systems." Quarterly Journal of Mechanics and Applied Mathematics 72, no. 3 (2019): 305–39. http://dx.doi.org/10.1093/qjmam/hbz008.

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Summary We consider both analytical and numerical studies of a steady-state fracture process inside a discrete mass-beam structure, composed of periodically placed masses connected by Euler–Bernoulli beams. A fault inside the structure is assumed to propagate with a constant speed and this occurs as a result of the action of a remote sinusoidal, mechanical load. The established regime of fracture corresponds to the case of an alternating generalised strain regime. The model is reduced to a Wiener–Hopf equation and its solution is presented. We determine the minimum feeding wave energy required

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Guyo G.A., Pavlova O.N., and Pavlov A.N. "Diagnostics of changes in the dynamics of complex systems from transient processes based on multiresolution wavelet analysis." Technical Physics Letters 49, no. 1 (2023): 48. http://dx.doi.org/10.21883/tpl.2023.01.55348.19255.

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With the use of multiresolution wavelet analysis, the possibilities of diagnosing changes in the dynamical regimes of complex systems from transient processes depending on the rate of variations of control parameters are studied. Estimates are made of the minimum sample size that allows diagnosing a change in the dynamical regime of systems with self-sustained oscillations on the example of transient processes during the formation or destruction of synchronous chaotic oscillations. Keywords: multiresolution analysis, random process, nonstationarity, wavelet.

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36

Chen, Chih-Cheng, Kelsen Serra, Albert C. Reynolds, and Rajagopal Raghavan. "Pressure Transient Analysis Methods for Bounded Naturally Fractured Reservoirs." Society of Petroleum Engineers Journal 25, no. 03 (1985): 451–64. http://dx.doi.org/10.2118/11243-pa.

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Abstract New methods for analyzing drawdown and buildup pressure data obtained at a well located in an infinite, pressure data obtained at a well located in an infinite, naturally fractured reservoir were presented recently. In this work, the analysis of both drawdown and buildup data in a bounded, naturally fractured reservoir is considered. For the bounded case, we show that five possible flow regimes may be exhibited by drawdown data. We delineate the conditions under which each of these five flow regimes exists and the information that can be obtained from each possible combination of flow

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37

App, J. F. "Influence of Flow Geometry on Sandface Temperatures During Single-Phase Oil Production: Dimensionless Analysis." SPE Journal 21, no. 03 (2016): 0928–37. http://dx.doi.org/10.2118/166298-pa.

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Summary This paper evaluates the impact of flow geometry on sandface temperature behavior under conditions of high drawdown in which Joule-Thomson thermal effects are significant. The temperature behavior of both radial- and linear-flow regimes is evaluated under steady-state and transient conditions. Through a dimensionless analysis of the thermal-energy equation, a systematic evaluation of the contributing terms is presented. The steady-state analysis is based on analytic solutions that demonstrate identical temperature behavior at asymptotic limits but are offset by a geometric factor at in

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38

Yahiou, A., H. Mellah, A. Bayadi, and M. Abid. "Effects of Inrush Current on the Hysteresis Loop and Load Influences on the Transient Current of a Single-Phase Transformer." Engineering, Technology & Applied Science Research 12, no. 5 (2022): 9258–64. http://dx.doi.org/10.48084/etasr.5205.

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When putting any unloaded transformer into service, a high-value current that can be very dangerous, called the inrush current, appears. The latter may cause problems and consequences in the electrical system. The challenges of visualizing the effects of transient regimes on the iron core's characteristics and the influence of the type of load on inrush current characteristics are covered in this study. The main purpose of this paper is to treat the influence of this transient phenomenon on the hysteresis loop of a single-phase transformer, in terms of its size, area, or position, and therefor

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Yahiou, Abdelghani, hacene Mellah, Abdelhafid Bayadi, and Mokhtar Abid. "Effects of Inrush Current on the Hysteresis Loop and Load Influences on the Transient Current of a Single-Phase Transformer." Eng. Technol. Appl. Sci. Res. 12, no. 5 (2022): 9258–64. https://doi.org/10.48084/etasr.5205.

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When putting any unloaded transformer into service, a high-value current that can be very dangerous, called the inrush current, appears. The latter may cause problems and consequences in the electrical system. The challenges of visualizing the effects of transient regimes on the iron core's characteristics and the influence of the type of load on inrush current characteristics are covered in this study. The main purpose of this paper is to treat the influence of this transient phenomenon on the hysteresis loop of a single-phase transformer, in terms of its size, area, or position, and ther

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40

Michel, Clio, and Gwendal Rivière. "The Link between Rossby Wave Breakings and Weather Regime Transitions." Journal of the Atmospheric Sciences 68, no. 8 (2011): 1730–48. http://dx.doi.org/10.1175/2011jas3635.1.

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Abstract The link between Rossby wave breaking (RWB) and the four wintertime weather regimes over the North Atlantic domain is studied in this paper. Using the 40-yr ECMWF Re-Analysis (ERA-40) data, frequencies of occurrence of anticyclonic and cyclonic wave-breaking (AWB and CWB, respectively) events are computed. Each weather regime has its own characteristic pattern of RWB frequencies. CWB events are found to be most frequent for the Greenland anticyclone weather regime whereas AWB events occur more for the Atlantic ridge and the zonal regimes. Time-lagged composites show that the RWB event

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Irimiciuc, Stefan-Andrei, Alexandra Saviuc, Florin Tudose-Sandu-Ville, et al. "Non-Linear Behaviors of Transient Periodic Plasma Dynamics in a Multifractal Paradigm." Symmetry 12, no. 8 (2020): 1356. http://dx.doi.org/10.3390/sym12081356.

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In a multifractal paradigm of motion, nonlinear behavior of transient periodic plasmas, such as Schrodinger and hydrodynamic-type regimes, at various scale resolutions are represented. In a stationary case of Schrodinger-type regimes, the functionality of “hidden symmetry” of the group SL (2R) is implied though Riccati–Gauge different “synchronization modes” among period plasmas’ structural units. These modes, expressed in the form of period doubling, damped oscillations, quasi-periodicity, intermittences, etc., mimic the various non-linear behaviors of the transient plasma dynamics similar to

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Md., Merajul Islam, and Kant Rama. "Theory of chronocoulometry of a pseudo first-order catalytic process at a rough electrode." Journal of Indian Chemical Society Vol. 94, Dec 2017 (2017): 1279–90. https://doi.org/10.5281/zenodo.5597871.

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Department of Chemistry, University of Delhi, Delhi-110 007, India <em>E-mail</em> : rkant@chemistry.du.ac.in <em>Manuscript received 25 October 2017, accepted 01 November 2017</em> A theoretical model for single potential step charge-transients has been developed for the pseudo first-order catalytic coupled (EC’) reaction mechanism at rough electrode-electrolyte interface. A second-order perturbation solution in surface prole for an arbitrary rough surface is obtained. The expression for the charge-transient at the rough electrode-electrolyte interface for band limited self-affine fract

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Zhang, Li, Marc A. Hesse, and Moran Wang. "Transient solute transport with sorption in Poiseuille flow." Journal of Fluid Mechanics 828 (September 12, 2017): 733–52. http://dx.doi.org/10.1017/jfm.2017.546.

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Previous work on solute transport with sorption in Poiseuille flow has reached contradictory conclusions. Some have concluded that sorption increases mean solute transport velocity and decreases dispersion relative to a tracer, while others have concluded the opposite. Here we resolve this contradiction by deriving a series solution for the transient evolution that recovers previous results in the appropriate limits. This solution shows a transition in solute transport behaviour from early to late time that is captured by the first- and zeroth-order terms. Mean solute transport velocity is inc

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Dudkowski, Dawid, Patrycja Jaros, and Tomasz Kapitaniak. "Extreme transient dynamics." Chaos: An Interdisciplinary Journal of Nonlinear Science 32, no. 12 (2022): 121101. http://dx.doi.org/10.1063/5.0131768.

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We study the extreme transient dynamics of four self-excited pendula coupled via the movable beam. A slight difference in the pendula lengths induces the appearance of traveling phase behavior, within which the oscillators synchronize, but the phases between the nodes change in time. We discuss various scenarios of traveling states (involving different pendula) and their properties, comparing them with classical synchronization patterns of phase-locking. The research investigates the problem of transient dynamics preceding the stabilization of the network on a final synchronous attractor, show

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Al-Hashimy, Zahid Ibrahim, Hussain H. Al-Kayiem, Mohammad Shakir Nasif, and Abdalellah O. Mohmmed. "Numerical Simulation of the Transient Development of Slug Flow in Horizontal Pipes." Applied Mechanics and Materials 819 (January 2016): 300–304. http://dx.doi.org/10.4028/www.scientific.net/amm.819.300.

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Slug flow regime in two and multi-phase flow in pipes is a complicated flow phenomena representing challenge in the design of the piping system. In the present work, water/air two phase flow was modeled and simulated as 3 dimensional, transient, and incompressible flow using Volume of Fluid technique in STAR-CCM+ software. The simulation was conducted to predict and evaluate the air-water slug flow in a horizontal pipe with 0.16 m diameter and 7 m long. The superficial velocities for both phases were extracted from Baker chart slug zone. The results were validated against experimental bench ma

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Zhu, De Gui, Hui Yi Tang, Hong Liang Sun, and Shuang Quan Guo. "High Temperature Properties of Ti₃SiC₂-SiC Composites." Advanced Materials Research 105-106 (April 2010): 222–25. http://dx.doi.org/10.4028/www.scientific.net/amr.105-106.222.

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Fully dense Ti3SiC2-64vol.%SiC(0.5m) composite materials are successfully fabricated by in situ synthesis under hot isostatic pressing. The high temperature flexure, tension and creep of Ti3SiC2-SiC composites were studied, and the results indicated that the composite had a high tensile strength under high temperature. Above 1000°C the composite were displayed a good high temperature plastic. The creep behavior is characterized by two regimes: an initial transient regime, where έ(dε/dt) decreases with t (time); a secondary creep regime in which έ is more or less constant with time.

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Lotov, Konstantin, and Igor Timofeev. "Transient regime of one-dimensional two-stream instability." Siberian Journal of Physics 3, no. 1 (2008): 62–65. http://dx.doi.org/10.54362/1818-7919-2008-3-1-62-65.

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Ferreira Cordeiro, Nuno Gonçalo, Jesus Dubert, Rita Nolasco, and Eric Desmond Barton. "Transient response of the Northwestern Iberian upwelling regime." PLOS ONE 13, no. 5 (2018): e0197627. http://dx.doi.org/10.1371/journal.pone.0197627.

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Carbajo, S. "Transient work function gating: A new photoemission regime." Journal of Applied Physics 128, no. 2 (2020): 023102. http://dx.doi.org/10.1063/5.0011737.

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Petitjean, Alban, and Olivier Musset. "EO solution to overcome the transient regime of a “cavity dumped” UV source, or how to work in chopped mode outside the transient regime?" EPJ Web of Conferences 287 (2023): 09043. http://dx.doi.org/10.1051/epjconf/202328709043.

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The "cavity dumped" laser architecture is a very efficient solution for having a high-efficiency pulsed laser source with a shorter pulse duration than a classic Q-Switch laser architecture. This solution makes it possible to obtain laser beams of almost constant pulse duration independently of the repetition rate and the pumping rate and to obtain very good conversion efficiency at 2w and 3w. Unfortunately, this architecture suffers from a handicap with a duration of the transient regime that can exceed ten milliseconds. The very long duration of this transient state makes this architecture i

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