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Relevant bibliographies by topics / Quasi-phase plane method

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Academic literature on the topic 'Quasi-phase plane method'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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Journal articles on the topic "Quasi-phase plane method"

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Pereverzev, Yu V., and V. G. Borisenko. "Magnon spectrum and phase transitions in easy-plane magnets." Soviet Journal of Low Temperature Physics 13, no. 11 (1987): 670–74. https://doi.org/10.1063/10.0031823.

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The method of two-time delaying Green’s functions is used to study the magnon spectrum and stability boundary (from the divergence of the transverse magnetic susceptibility) of the paramagnetic phase of easy-plane magnets with one-ion anisotropy in a magnetic field perpendicular to the easy plane. The behavior of the phase boundary in the low-frequency region is studied. An equation is derived for the line along which the energy of low-frequency magnons vanishes for arbitrary quasi-momenta. The coordinates of the line terminal on the phase curve are obtained. The change in the shape of the pha

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Yin, Mu Yi, Ling Zhang, Peng Zhu, and Fei Guan. "Control for Optimized Air-Gap Magnetic Field of Five-Phase Induction Motor through Dual-Plane Asynchronous Rotation Transformation." Applied Mechanics and Materials 347-350 (August 2013): 486–90. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.486.

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This paper presents a control scheme with an optimized air-gap magnetic field for five-phase induction motor, the control objective is to generate a quasi-square magnetic flux density by the control of excitation and torque currents in the two planes. In this paper, the decoupling vector control model of five-phase induction motor in d1-q1-d3-q3 coordinate system is analyzed, and the direct and quadrature current components in the third harmonic plane as non-linear functions of the fundamental are built, which guarantee the air-gap magnetic to be a constant quasi-square waveform irrespective o

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Liu, Kai, Si Jin Wu, Xin Ya Gao, and Lian Xiang Yang. "Simultaneous Measurement of In-Plane and Out-of-Plane Deformations Using Dual-Beam Spatial-Carrier Digital Speckle Pattern Interferometry." Applied Mechanics and Materials 782 (August 2015): 316–25. http://dx.doi.org/10.4028/www.scientific.net/amm.782.316.

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Digital speckle pattern interferometry (DSPI) is an advanced technique for both in-plane and out-of-plane deformation measurements of diffuse surfaces in nanoscale. It has been widely used in aerospace engineering and other high-tech industries due to the advantages of non-contact, high-accuracy and full-field measurement. Traditionally, DSPI uses temporal phase shifting method to achieve precise deformation measurement, but it is only suitable for quasi-static deformation. Spatial-carrier method is another effective phase retrieval method used in DSPI and its validity has been verified in som

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Ivliyev, Andrey Dmitrievich, Vladislav Vitalievich Meshkov, and Mikhail Yurievich Chernoskutov. "Condensed Materials Thermal Diffusivity Measurements Using Temperature Waves Method in Adiabatic Regime." Advanced Materials Research 1126 (October 2015): 28–32. http://dx.doi.org/10.4028/www.scientific.net/amr.1126.28.

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Temperature wave method is a quasi-stationary method for measuring thermal diffusivity of a substance. Method of plane temperature waves is a derivative of temperature wave method based on the notion of applying heat flux to first side of a sample and measuring temperature fluctuation on the second side of a sample. Changing temperature wave frequent allows us to enter adiabatic regime. Considering that phase of heat flux is known, the only parameter to be measured is phase of temperature changes on the second side of a sample relative to the phase of heat flux, which (in adiabatic regime) giv

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Fang, Xinru, Lingdi Huang, Zhimei Lou, and Yuanbin Wang. "Quasi-Periodic and Periodic Vibration Responses of an Axially Moving Beam under Multiple-Frequency Excitation." Mathematics 12, no. 17 (2024): 2608. http://dx.doi.org/10.3390/math12172608.

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In this work, quasi-periodic and periodic vibration responses of an axially moving beam are analytically investigated under multiple-frequency excitation. The governing equation is transformed into a nonlinear differential equation by applying the Galerkin method. A double multiple-scales method is used to study the quasi-periodic and periodic vibrations of an axially moving beam with varying velocity and external excitation. Time traces and phase-plane portraits of quasi-periodic and periodic vibrations are obtained, which are in excellent agreement with those of the direct time integration m

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Горбунов, D. Gorbunov, Вохмина, et al. "Chaotic Dynamics of Electroencephalogram Parameters." Journal of New Medical Technologies 22, no. 2 (2015): 38–73. http://dx.doi.org/10.12737/11830.

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A clinical medicine usually uses the amplitude-frequency characteristics of recorded biopotentials. The paper presents still chaotic dynamics, which takes place for the autocorrelation function A(t) and statistic function of distribution fix). It is proposed two new approaches for estimation of parameters of electroencephalograms. The first is based on the construction of the matrix of pairwise comparisons of recorded samples of brain potentials in subjects in different physiological (mental) states: with photostimulation and without it. The second method is based on calculating the parameters

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Boucerredj, N., F. Semari, S. Ghemid, et al. "Density functional theory investigation of the phase transition, elastic and thermal characteristics for AuMTe₂(M = Ga, In) chalcopyrite compounds." Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials 80, no. 6 (2024): 807–20. https://doi.org/10.1107/s2052520624010473.

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We explored the pressure-induced structural phase transitions and elastic properties of AuMTe2 (M = Ga, In) using the full-potential linearized augmented plane wave method within the framework of density functional theory, applying both generalized gradient and local density approximations. Thermodynamic properties were further assessed through the quasi-harmonic model. We determined the transition pressures for the phase shift from the chalcopyrite structure to the NaCl rock-salt phase in both AuGaTe2 and AuInTe2. Additionally, we calculated and analyzed mechanical properties, such as bulk mo

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Kuznetsov, Alexander Petrovich, Yuliya Viktorovna Sedova, and Nataliya Vladimirovna Stankevich. "Chaotic Rossler Oscillator with Controlled Stimulus Phase." Differential Equations and Control Processes, no. 1 (2024): 60–69. https://doi.org/10.21638/11701/spbu35.2024.105.

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The dynamics of the chaotic Rossler with external force the phase of which depends on the state of the system is investigated. The study was carried out with the method of charts of Lyapunov exponents that identify areas of different types of dynamics on the plane frequency - amplitude of the external force. Their transformation is discussed with an increase in the parameter responsible for the dependence of the phase on the dynamical variable. The possibility of quasi-periodic dynamics with the set of Arnold tongues was demonstrated. It is shown that with a strong dependence of the phase on t

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Горбунов, D. Gorbunov, Вохмина, et al. "Stochastic and chaotic evaluation of parameters of lectroencephalogram." Complexity. Mind. Postnonclassic 4, no. 1 (2015): 54–59. http://dx.doi.org/10.12737/10865.

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Traditionally parameters of amplitude-frequency characteristics of recorded biopotentials are used in EEG. In this paper we show that they are still chaotic, which takes place for the autocorrelation function A(t). It is proposed the two new approaches for estimation of parameters of electroencephalograms. The first is based on the construction of the matrix of pairwise comparisons of recorded samples of brain potentials in subjects in different physiological (mental) states. The second method is based on calculating the parameters of quasi-attractors, which are built on the plane in the coord

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Limare, A., M. Tal, M. D. Reitz, E. Lajeunesse, and F. Métivier. "Optical method for measuring bed topography and flow depth in an experimental flume." Solid Earth Discussions 3, no. 1 (2011): 187–215. http://dx.doi.org/10.5194/sed-3-187-2011.

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Abstract. We describe an optical method known as moiré for acquiring quasi-simultaneous measurements of bed topography and flow depth in laboratory experiments. The moiré method is based on projecting a fringe pattern (grating) on the bed and analyzing the deformation of the pattern caused by the topography with respect to a reference plane. The height of the object is encoded in the phase of the pattern and can be retrieved either through Fourier transform or phase shifting algorithms. The methodology enables image-based non-contact measurements over a continuous surface at very high spatial

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Dissertations / Theses on the topic "Quasi-phase plane method"

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Долгая, А. А., А. В. Викулин та Д. Р. Акманова. "О методах анализа временных рядов очагов землетрясений и извержений вулканов". Thesis, Сумский государственный университет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/39362.

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Book chapters on the topic "Quasi-phase plane method"

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Sun, Fengzhi, Kilian Ortmann, Kerstin Eckert, and Zhe Lei. "Interferometric Measurement of Forward Reaction Rate Order and Rate Constant of a Dy(III)-PC88A-HCl Solvent Extraction System." In Topics in Applied Physics. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-58376-6_10.

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AbstractA novel approach is reported for obtaining the forward rate law of a rare earth (RE) solvent extraction system. An immiscible water–oil system is studied with a Dy(III) laden aqueous phase and a PC88A laden organic phase with a 1:1 volume ratio, with a total volume of about 0.68 mL. The two phases are poured into a Hele-Shaw cell with a gap width of 1 mm. Hence, a stratified interface forms at the gravitational-perpendicular plane. The Dy(III) concentration boundary layer, as a result of cation exchange, is monitored in real time in the aqueous phase by means of a monochromatic laser-b

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Chong, Xue, Man Jiang, Shuai Li, and Jian-Hong Ye. "Effects of an Experimental Broadcasting and Hosting Class: A Triadic Reciprocal Determinism Perspective." In Education and Human Development. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.113355.

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Based on the triadic reciprocal determinism and the achievement goal theory, this study reconstructed two theories in the existing experimental curriculum—— “Practice knowledge experimental class” for broadcasting and hosting art majors in a college in Chongqing, China. The quasi-experimental method and purposive sampling were used in this study, and 14 undergraduates in the “Practice knowledge experimental class” were selected as subjects. During the first phase (from the first to the fourth week) of the course, a questionnaire was distributed to each student, and the time series analysis met

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Warrick, Arthur W. "One-Dimensional Absorption." In Soil Water Dynamics. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195126051.003.0009.

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In this chapter we address one-dimensional absorption. Absorption denotes movement of water (or other liquid) into a soil under the influence of capillarity without the effects of gravity. Although important for horizontal flow conditions, there is more interest in the results and principles relevant to the early stage of infiltration and in general relationships descriptive of the physical principles for all unsaturated systems. At the outset, two simplified systems will be considered. Included is the classical problem of linear diffusion into a semi-infinite domain. Then the Boltzmann simila

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Conference papers on the topic "Quasi-phase plane method"

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Crepeau, John, Ali Siahpush, and Blaine Spotten. "Comparison of Computational and Quasi-Static Solutions of Phase Change With Heat Generation." In ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference collocated with the ASME 2007 InterPACK Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ht2007-32162.

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In this paper, we investigate the effects that the volumetric heat generation has on the movement and steady-state location of a solid-liquid phase change front in melting and freezing processes. Volumetric heat generation enhances melting and impedes freezing. This phenomenon occurs in nuclear, geologic, cryogenic and material processing applications. We compare the results from a FLUENT computational model with analytical results of a quasi-static solution of the governing equations. These models are applied for constant surface temperature boundary conditions and various volumetric heat gen

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Chou, Hsu-Feng, Gin-Chung Wang, and Ching-Fuh Lin. "A Study of Quasi-Fhase-Matched Second-Order Nonlinear Effects in Optical Waveguides Using an Iterative Finite-Difference Beam Propagation Method." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cthh39.

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Quasi-phase-matched (QPM) waveguide devices have been widely studied due to their flexible frequency conversion abilities and potential applications in many areas Some analytical analyses [1] have been done to model the QPM second-order nonlinear effects using both the plane-wave and non-depleting pump approximation. However, precise analytical modeling of those QPM devices is quite difficult when large or irregular geometrical variations exist and the depletion of the pump energy is not negligible Therefore, we propose an iterative finite difference beam propagation method (IFD-BPM) to model

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Yoshimoto, Takanori, and Tetsuya Kanagawa. "Weakly Nonlinear and High Speed Propagation of Quasi-Monochromatic High Frequency Waves in Compressible Bubbly Liquids." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-4682.

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Abstract This study theoretically investigates plane progressive quasi-monochromatic waves in an initially quiescent compressible liquid containing many spherical gas bubbles, on the basis of the derivation of a nonlinear wave equation that represents waves propagating at a high phase velocity induced by taking the effect of liquid compressibility in consideration. The governing equations for bubbly flows are composed of the conservation equations of mass and momentum, the equation of bubble dynamics as radial oscillations, and so on. By using the method of multiple scales with an appropriate

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Saadatnia, Zia, and Ebrahim Esmailzadeh. "Chaotic Flexural Oscillations of Embedded Non-Local Nanotubes Subjected to Axial Harmonic Force." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68317.

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Chaotic behavior of an embedded carbon nanotube subjected to an external excitation and the combinational static-dynamic axial loads is investigated. Mathematical formulation has been developed based on the non-local theory in order to reflect the small-scale effects. The tube is supported by the Kelvin-Voigt viscoelastic foundation and the Galerkin method is utilized to solve the governing nonlinear differential equations. The vibration behavior of the system for the parameters of a real model is studied and different vibration responses of the nanotube such as the periodic, quasi-periodic an

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Rapposelli, Emilio, Roberto Falorni, and Luca d’Agostino. "Two-Phase Flow and Inertial Effects on the Rotordynamic Forces in Whirling Journal Bearings." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31007.

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This paper presents the application of the isenthalpic two-phase flow approximation (Brennen, 1995) to the study of cavitation and ventilation effects in plane journal bearings with whirling eccentricity. A quasi-homogeneous bubbly liquid/vapor model, suitably modified to account for thermal effects (Rapposelli and d’Agostino, 2001), is used to describe the occurrence of flow cavitation. An homogeneous liquid/gas/vapor model without thermal effects is used to describe the simultaneous occurrence of cavitation and ventilation. The proposed model treats the fully-wetted and two-phase portions of

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Su, Jialin, Ashley Barker, Andrew Garmory, and Jon Carrotte. "Spray Response to Acoustic Forcing of a Multi-Passage Lean-Burn Aero-Engine Fuel Injector." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75554.

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An air-blast fuel injector in an aero-engine plays an important role in the thermoacoustic behaviour of the combustion system. Previous studies have looked at the response of the gas phase to acoustic forcing of fuel injectors but less attention has been paid to the liquid phase. Even if the fuel flow rate is assumed to remain constant, the atomisation process is driven by the relative velocity of the air and fuel. Hence air velocity fluctuations will lead to changes in atomisation which will significantly affect the flame. In this work, we use both experiment and computational fluid dynamics

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Zhang, Jinya, Hongwu Zhu, and Huan Wei. "Three-Dimensional Blade Design of Helico-Axial Multiphase Pump Impeller Based on Numerical Solution of Meridian Flow Net and Blade Mean Camber Lines." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-06030.

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The three-dimensional blade design method is adopted to design the blades of the impeller of a helico-axial multiphase pump. In this design method, the flow field of the impeller is computed with the hypothesis of multiphase homogeneous flow on the basis that it is the practical flow regime in the multiphase pump. The shape of the blade is obtained from a numerical solution of the meridian flow net the on meridional plane and blade mean camber lines on stream-surfaces of revolution. First, the contour shape and size of the meridian flow channel of the impeller blade is determined by parameteri

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Pascal, J. P., and F. Jourdan. "The “Rigid-Multi-Hertzian Method” as Applied to Conformal Contacts." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34379.

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Multi-Hertzian Methods are used in Railway codes to calculate elastically normal forces of Wheel/Rail Contacts. Such methods may be properly applied to calculate forces of several elliptical simultaneous contacts. They may also be applied as a sum of Hertzian contacts to approximate normal forces of non elliptical patches such as presented in the 3D drawing. Solving such cases necessitates to choose the location, the ellipticity and the maximum indentation of elementary ellipses. In order to solve this problem it is usual to consider the maxima of the function of un-deformed profiles indentati

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Aérens, Pierre, Carlos Hassan Torres-Verdin, and D. Nicolas Espinoza. "Experimental Investigation of Two-Phase Flow Properties of Heterogeneous Rocks for Advanced Formation Evaluation." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206334-ms.

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Abstract An uncommon facet of Formation Evaluation is the assessment of flow-related in situ properties of rocks. Most of the models used to describe two-phase flow properties of porous rocks assume homogeneous and/or isotropic media, which is hardly the case with actual reservoir rocks, regardless of scale; carbonates and grain-laminated sandstones are but two common examples of this situation. The degree of spatial complexity of rocks and its effect on the mobility of hydrocarbons are of paramount importance for the description of multiphase fluid flow in most contemporary reservoirs. There

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Chen, Shuping, Huiyan Chen, Alex Pletta, and Dan Negrut. "Coupled Lateral and Longitudinal Control for Trajectory Tracking, Lateral Stability, and Rollover Prevention of High-Speed Automated Vehicles Using Minimum-Time Model Predictive Control." In ASME 2021 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/detc2021-68099.

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Abstract Most controllers concerning lateral stability and rollover prevention for autonomous vehicles are designed separately and used simultaneously. However, roll motion influences lateral stability in cornering maneuvers, especially at high speed. Typical rollover prevention control stabilizes the vehicle with differential braking to create an understeering condition. Although this method can prevent rollover, it can also lead to deviation from a reference path specified for an autonomous vehicle. This contribution proposes and implements a coupled longitudinal and lateral controller for p

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