Littérature scientifique sur le sujet « Phenomenological Velocity »

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Articles de revues sur le sujet "Phenomenological Velocity"

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Zekry, Abdelhalim. "Phenomenological parameters of the spreading velocity in thyristors." Archiv für Elektrotechnik 75, no. 5 (1992): 351–57. http://dx.doi.org/10.1007/bf01576105.

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Maruejouls, T., P. A. Vanrolleghem, G. Pelletier, and P. Lessard. "A phenomenological retention tank model using settling velocity distributions." Water Research 46, no. 20 (2012): 6857–67. http://dx.doi.org/10.1016/j.watres.2011.11.067.

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Song, TaeKwon, and SangMo Yang. "Phenomenological Calculation of the Domain-size-dependentFerroelectric Domain-wall Velocity." Journal of the Korean Physical Society 55, no. 2 (2009): 618–21. http://dx.doi.org/10.3938/jkps.55.618.

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Lee, Chul-Hee, and Andreas A. Polycarpou. "A phenomenological friction model of tripod constant velocity (CV) joints." Tribology International 43, no. 4 (2010): 844–58. http://dx.doi.org/10.1016/j.triboint.2009.12.004.

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Dorovskii, V. N., and Yu V. Perepechko. "Phenomenological description of two-velocity media with relaxing tangential stresses." Journal of Applied Mechanics and Technical Physics 33, no. 3 (1992): 403–9. http://dx.doi.org/10.1007/bf00851737.

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Vil’chinskiĭ, S. I., and P. I. Fomin. "Phenomenological relativistic theory of superfluidity for systems with two types of condensates." Low Temperature Physics 21, no. 7 (1995): 566–69. https://doi.org/10.1063/10.0033844.

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Equations are derived phenomenologically for the relativistic theory of superfluidity with two types of condensates in the nondissipative approximation. Three-velocity relativistic thermodynamics and hydrodynamics are deduced from the conditions of consistency of the conservation laws for energy–momentum, generalized charge, and entropy with the superfluid velocity equations.
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Skakauskas, Vladas, Pranas Katauskis, Remigijus Šimkus, and Feliksas Ivanauskas. "Phenomenological model of bacterial aerotaxis with a negative feedback." Nonlinear Analysis: Modelling and Control 18, no. 2 (2013): 227–49. http://dx.doi.org/10.15388/na.18.2.14024.

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A phenomenological model for the suspension of the aerotactic swimming microorganisms placed in a chamber with its upper surface open to air is presented. The model was constructed to embody some complexity of the aerotaxis phenomenon, especially, changes in the average bacteria drift velocity under changing environmental conditions. It was assumed that effective forces applied to the cell (gravitational, drag, and thrust) should be essential for the overall system dynamics; and that bacterial propulsion force, but not their swimming velocity, is proportional to the gradient of the oxygen conc
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Rand, Omri. "Technical Note: A Phenomenological Modification for Glauert's Classical Induced Velocity Equation." Journal of the American Helicopter Society 51, no. 3 (2006): 279. http://dx.doi.org/10.4050/1.3092889.

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Kinzelin, E., and D. Hubert. "Ion velocity distribution function in the upper auroralFregion: 1. Phenomenological approach." Journal of Geophysical Research 97, A4 (1992): 4061. http://dx.doi.org/10.1029/91ja02830.

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Standnes, Dag Chun. "A phenomenological description of the transient single-phase pore velocity period using the resistance force-velocity relationship." Advances in Geo-Energy Research 6, no. 2 (2022): 104–10. http://dx.doi.org/10.46690/ager.2022.02.03.

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Thèses sur le sujet "Phenomenological Velocity"

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Sillanpää, Jussi. "Phenomenological model for electronic stopping of low-velocity ions in chrystalline solids." Helsinki : University of Helsinki, 2000. http://ethesis.helsinki.fi/julkaisut/mat/fysii/vk/sillanpaa/.

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Andrieu, Eric. "Influence de l'environnement sur la propagation des fissures dans un superalliage base nickel : l'inconel 718." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376022112.

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Puech, Laurent. "3He polarisé : propriétés magnétoélastiques et comparaison avec deux systèmes à fermions lourds : obtention d'hélium polarisé à 50 mK et étude des relaxations d'énergie dans ce système." Grenoble 1, 1988. http://www.theses.fr/1988GRE10036.

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Interpretation de l'abaissement de la pression de fusion lorsque la fusion est plus rapide que le temps de relaxation de la polarisation de **(3)he d'apres l'etude theorique de la morphologie de l'interface liquide-solide lors de la fusion de **(3)he solide polarise. Tendance au metamagnetisme de **(3)he liquide pour une polarisation de equiv. A 20 %, a 0,1 k, et absence d'anomalie dans la vitesse du son mesuree a ce taux de polarisation. Possibilite de refroidir le liquide polarise au-dessus de 0,1 k en un temps tres court compare a celui de la relaxation de polarisation. Etude experimentale
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Livres sur le sujet "Phenomenological Velocity"

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Cawley, James D. Phenomenological study of the behavior of some silica formers in a high velocity jet fuel burner. National Aeronautics and Space Administration, Lewis Research Center, 1985.

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Deruelle, Nathalie, and Jean-Philippe Uzan. Dynamics of massive systems. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198786399.003.0006.

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This chapter presents the laws of motion of an ensemble of point masses forming a solid body whose shape is invariant, or a fluid whose shape can vary with time. It argues that an ensemble of point masses constitutes a solid if the distances between the points can be assumed constant. The chapter then provides examples of the motions of a solid. Finally, it demonstrates the Euler equations of fluid motion. Here, it states that a perfect fluid is characterized by its (inertial) mass density ρ‎(t, xⁱ), its pressure p(t, xⁱ) which phenomenologically describes its internal collisions, and a veloci
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Chapitres de livres sur le sujet "Phenomenological Velocity"

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Garrett, Steven L. "Ideal Gas Laws." In Understanding Acoustics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44787-8_7.

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Abstract This is the first chapter to explicitly address fluid media. For springs and solids, Hooke’s law, or its generalization using stress, strain, and elastic moduli provided an equation of state. In fluids, we have an equation of state that relates changes in pressure (stresses) to changes in density (strain). The simplest fluidic equations of state are the Ideal Gas Laws. Our presentation of these laws will combine microscopic models that treat gas atoms as hard spheres with phenomenological (thermodynamic) models that combine the variables that describe the gas with conservation laws th
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Arneodo, A., S. Manneville, J. F. Muzy, and S. G. Roux. "Revealing a lognormal cascading process in turbulent velocity statistics with wavelet analysis." In Wavelets. Oxford University PressOxford, 2000. http://dx.doi.org/10.1093/oso/9780198507161.003.0002.

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Abstract We use the continuous wavelet transform to extract a cascading process from experimental turbulent velocity signals. We mainly investigate various statistical quantities such as the singularity spectrum, the self-similarity kernel and spacescale correlation functions, which together provide information about the possible existence and nature of the underlying multiplicative structure. We show that, at the highest accessible Reynolds numbers, the experimental data do not allow us to distinguish various phenomenological cascade models recently proposed to account for intermittency from
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Woods, L. C. "Intermediate Kinetic Theory." In An Introduction to the Kinetic Theory of Gases and Magnetoplasmas. Oxford University PressOxford, 1993. http://dx.doi.org/10.1093/oso/9780198563938.003.0005.

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Abstract In the elementary theory, the peculiar velocity c is treated as being a dependent variable. It depends on an initial value co chosen from the equilibrium distribution Jo, on the lapsed time since the last collision and on local temperature and fluid velocity gradients (see (3.40)). The procedure makes no use of the actual distribution function J, since Jo is entirely sufficient for averaging purposes. Details of the collisional process are suppressed by adopting relaxation times 71 and 72 for momentum and energy transfer. These times could be regarded as being a phenomenological input
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Han, Chang Dae. "Continuum Theories for the Viscoelasticity of Flexible Homogeneous Polymeric Liquids." In Rheology and Processing of Polymeric Materials: Volume 1: Polymer Rheology. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780195187823.003.0008.

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There are two primary reasons for seeking a precise mathematical description of the constitutive equations for viscoelastic fluids, which relate the state of stress to the state of deformation or deformation history. The first reason is that the constitutive equations are needed to predict the rheological behavior of viscoelastic fluids for a given flow field. The second reason is that constitutive equations are needed to solve the equations of motion (momentum balance equations), energy balance equations, and/or mass balance equations in order to describe the velocity, stress, temperature, an
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Chimowitz, Eldred H. "Supercritical Adsorption." In Introduction to Critical Phenomena in Fluids. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780195119305.003.0008.

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In this chapter, we discuss adsorption phenomena in supercritical systems, a situation that occurs in many application areas in chemical-process and materials engineering. An example of a commercial application in this area, which has achieved wide acceptance as a tool in analytical chemistry, is supercritical fluid chromatography (SFC). Not only is SFC a powerful technique for chemical analysis, but it also is a useful method for measuring transportive and thermodynamic properties in the near-critical systems. In the next section, we analyze adsorption-column dynamics using simple dynamic mod
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Actes de conférences sur le sujet "Phenomenological Velocity"

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Kovarik, O., S. Maffia, T. Stittgen, F. Wick, V. Lukes, and J. Cizek. "Mechanical and Fracture Properties for As-Built 3DMD Inconel 718: Stability to Process Parameters Variation." In ITSC 2025. ASM International, 2025. https://doi.org/10.31399/asm.cp.itsc2025p0434.

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Abstract This paper aims to relate the most important mechanical and fracture properties of Inconel 718 built by the 3DMD technology to the two process parameters directly influencing the thermal gradient, the scanning velocity, and the laser power. To gain a phenomenological understanding of the underlying mechanisms, a complex EBSD study of the obtained materials was performed.
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Sanal Kumar, Vr, H. Kim, B. Raghunandan, A. Sameen, T. Setoguchi, and S. Raghunathan. "A Phenomenological Introduction of Fluid-Throat in High-Velocity Transient Motors." In 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-4147.

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Fortaleza, Eugenio. "Analysis of Phenomenological Models of Vortex Induced Vibrations." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49403.

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The objective of this article is to identify a model able to represent the first harmonic behavior of a rigid cylinder undergoing VIV in the most different cases of a rigid cylinder supported by a spring/damper system. This analysis of the first harmonic behavior is made considering three different non-dimensional variables: the damping coefficient, the reduced velocity and the mass ratio. The challenge is to define a model that represents the changes on the lock-in zone considering the different combination of damping coefficient and mass ratio thus able to represent the different real system
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Opinel, Pierre-Adrien, and Narakorn Srinil. "Phenomenological Modelling of Cylinder VIV With Contributions From Oscillatory Flows." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77689.

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This paper presents a numerical phenomenological model for a two-degree-of-freedom VIV of a flexibly mounted circular rigid cylinder subject to sinusoidal oscillatory flows. This prediction model is based on the use of double Duffing-van der Pol (structure-wake) oscillators which capture the structural geometrical coupling and fluid-solid interaction effects through system cubic-quadratic nonlinearities. Empirical coefficients are calibrated based on computational fluid dynamics results in the literature for the Keulegan-Carpenter numbers (KC) of 10, 20 and 40, satisfying a reasonable correspo
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Mendes de Souza, Leonardo, and Augusto Bornschlegell. "PHENOMENOLOGICAL ASPECTS REGARDING THE AIR FLOW PAST A AHMED BODY WHEN MODELLING THE GROUND VELOCITY." In 25th International Congress of Mechanical Engineering. ABCM, 2019. http://dx.doi.org/10.26678/abcm.cobem2019.cob2019-1074.

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Aghav, Y. V., P. A. Lakshminarayanan, M. K. G. Babu, Azeem Udin, and A. D. Dani. "Validating Phenomenological Smoke Model at Different Operating Conditions of DI Diesel Engines." In ASME 2006 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/ices2006-1346.

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A new phenomenological model that was published in ref [1] encompasses the spray and the wall interaction by a simple geometrical consideration. The current study extends this earlier work with investigations made on 16 different engines from 6-engine families of widely varying features applied to off-highway as well as on-road duty. A dimensionless factor was introduced to take care of the nozzle hole manufactured by hydro-erosion, (HE) as well as the conical shape of the nozzle hole (K factor) in case of valve closed orifice type of nozzles. The smoke emitted from the wall spray formed after
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Fujarra, Andre´ L. C., and Celso P. Pesce. "Added Mass Variation and Van der Pol Models Applied to Vortex-Induced Vibrations." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32162.

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Vortex Induced Vibrations (VIV) experiments in water, conducted with flexible or elastically mounted rigid cylinders, under low values of mass-damping parameter, often reveal a large lock-in range, presenting a flat response region just after the amplitude curve peak. Previous phenomenological models, which treat the vortex wake dynamics with nonlinear oscillators of the Van der Pol type, are unable to predict this flat response region. The present paper re-addresses the phenomenological approach and shows that a consistent interpretation of a relevant hydrodynamic parameter, written as functi
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Wilson, Dennis E., and Anthony J. Hanford. "An Unsteady Velocity Formulation for the Edge of the Near-Wall Region." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-478.

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A phenomenological model is presented that relates freestream turbulence to the augmentation of stagnation-point surface flux quantities. The model requires the turbulence intensity, the longitudinal scale of the turbulence, and the energy spectra as inputs for the unsteady velocity at the edge of the near-wall viscous region. The form of the edge velocity contains both pulsations of the incoming flow and oscillations of the streamline. Incompressible results using a single fluctuating component are presented within the stagnation region of a two-dimensional cylinder. The time-averaged Froessl
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Faghani, Ehsan, and Steven N. Rogak. "Phenomenological Simulation of Non-Premixed Gas Jet Flames Including Soot Formation and Oxidation." In ASME 2012 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icef2012-92158.

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A phenomenological model (called here “Slice Model”) has been developed to simulate non-premixed gas jet flames including soot formation in the domain. The Slice Model is based on the self-similarity solution of gas jets and forced to satisfy momentum, mass and energy balances in every cross section. The Slice Model can predict the velocity, mass fraction and temperature field of non-reacting and reacting jets over a wide range of changes in the jet parameters. A sub-model for soot formation based on Hiroyasu’ model is applied to predict soot formation in non-premixed flames. Cantera, an open-
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Han, Changfu, Long Liu, Dai Liu, and Yan Peng. "Study on the Phenomenological Spray Modelling of Heavy Oil for Marine Diesel Engines." In ASME 2018 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icef2018-9505.

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In recent years, to satisfy the more and more stringent energy efficiency and pollutants emission regulations of ship, which had been issued by the International Marine Organization (IMO), the combustion improvement of the two-stroke low-speed diesel engines has been paid much attention. The phenomenological combustion model, as an effective and economic approach, is widely used for parametric study on diesel engine combustion process. However, the fuel of two-stroke low-speed diesel engine is heavy oil, and there are few researches focused on the modeling of heavy oil spray. Therefore, a spra
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