Results 41 to 50 of about 1,087,074 (217)
Using Trajectories in Quantum Cosmology
Universe, 2018 Quantum cosmology based on the Wheeler De Witt equation represents a simple way to implement plausible quantum effects in a gravitational setup. In its minisuperspace version wherein one restricts attention to FLRW metrics with a single scale factor and ...
Patrick Peter
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Frontiers in Earth Science, 2021 Simulating and predicting wave propagation in porous media saturated with two fluids is an important issue in geophysical exploration studies. In this work, wave propagation in porous media with specified structures saturated with two immiscible fluids ...
Fansheng Xiong +10 more
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Time Evolution of Relative Entropies for Anomalous Diffusion
Entropy, 2013 The entropy production paradox for anomalous diffusion processes describes a phenomenon where one-parameter families of dynamical equations, falling between the diffusion and wave equations, have entropy production rates (Shannon, Tsallis or Renyi) that ...
Karl Heinz Hoffmann +3 more
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Registration of high-frequency waves on the surface by the interference methods [PDF]
EPJ Web of Conferences, 2019 Capillary waves are frequently used to measure the surface tension of liquids. However, this approach has not found wide application in the manufacture of modern commercial tensiometers because of the limitations imposed by capillary wave excitation ...
Shmyrova Anastasia +3 more
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Derivation of one-way wave equations for vector wave propagation problems [PDF]
The Journal of the Acoustical Society of America, 1991 The recent application of pseudodifferential and Fourier integral operators and functional integral methods to the factored scalar Helmholtz equation has resulted in extended parabolic wave theories, corresponding path integral solutions, and a numerical marching algorithm for a variety of acoustic wave propagation problems.
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Results in Physics, 2018 In this research, we investigate one of the most popular model in nature and also industrial which is the pressure equation of bubbly liquids with examination for viscosity and heat transfer which has many application in nature and engineering ...
Mostafa M.A. Khater +2 more
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Norm of iegnfunction of one-dimension photonic crystal
Вісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2021 Relevance. In recent decades (about the 90-s ХХ century) there has been rapid development of photonic. Thus, to arise scientific interest to optic range of electromagnetic radiation.
О. V. Kazanko, О. E. Penkina
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Ain Shams Engineering JournalIn this paper, we have studied the generalized shallow water wave equation with variable coefficients which represent different wave phenomena as tidal waves, irrigation flows, tsunamis, storm surges, and atmospheric waves by using two different ...
Rehab M. El-Shiekh, Mahmoud Gaballah
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Fluids, 2020 The near-shore and estuary environment is characterized by complex natural processes. A prominent feature is the wind-generated waves, which transfer energy and lead to various phenomena not observed where the hydrodynamics is dictated only by currents ...
Yong G. Lai, Han Sang Kim
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Galilei-invariant and energy-preserving extensions of Benjamin–Bona–Mahony-type equations
Partial Differential Equations in Applied Mathematics, 2023 The classical Benjamin–Bona–Mahony equation (BBM equation) models unidirectional propagation of long gravity surface waves of small amplitude. Unlike many other water wave models, it lacks the Galilean invariance, which is an essential property of ...
A. Cheviakov, D. Dutykh
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