arXiv subjects

Viorel Drafta

Publications and source records attributed to Viorel Drafta.

11 recordsLinked to original sources

arXiv2024

Vortex-bubble system as a spin acoustic particle model

A vortices-bubble system may be depicted by some features which may lead to infer its acoustic charge and its spin angular momentum. We study the dynamics of this system within the framework of fluid physics and with the help of Maxwell's hydrodynamic equations. Since we will adopt an approach of a fluid without viscosity and without gravity, then the fluid is in steady state if also we will neglect the acoustic radiation. When we expressed the energy (the kinetic and potential energy) of the vortex-bubble system we found out that the state of bubble which is captured in the core of the vortex is more stable than it is out of the core. For the above allegations we consider that this system, namely a vortex-bubble system, is a good approach for an acoustic particle with charge and spin angular momentum. This system owns to the Acoustic World.

physics.gen-ph↗

arXiv2024

Vortexes as systems specific to the Acoustic World

In this paper we study the properties of vortexes, as systems specific to the Acoustic World, using both hydrodynamic theory and the corresponding hydrodynamic Maxwell equations. According to this study, it follows that the vortex behaves like an acoustic dipole that has intrinsic/internal angular momentum. The system of two identical vortices also has orbital angular momentum and behaves, at distances much greater than the distance between the axes of the vortices, as a single vortex. With the help of Maxwell's hydrodynamic equations for the vortex we deduced the force between two vortices and obtained the expression of the equivalent mass of the vortex and the permittivity of the electroacoustic field. We also obtained and interpreted the expression for the energy density of the acoustic field. The density and pressure variations induced by the vortex cause the change in the propagation speed of the acoustic waves and the acoustic lensing property of the vortex.

physics.gen-ph↗

arXiv2023

Compatibility of Maxwell's fluid equations with interactions between oscillating bubbles

The outcome of this paper was a shape of the interaction of two oscillating bubbles. This was done to express the secondary Bjerknes force using the Maxwell equations for a liquid. These subsequent equations were written for the quantities velocity, pressure, and density as deviations from steady state. Also, as it will show in the following rows, we found the expressions of the acoustic charge and of the acoustic intensity. Our results may facilitate the adoption of an approach for the interaction of two vortices and for the entrapment of a bubble by a vortex. This approach leads to a model for an acoustic charged particle which has internal angular momentum.

physics.gen-ph↗

arXiv2023

Quantitative analysis of secondary Bjerkenes forces in various liquids

Numerically calculating the interaction forces between two free bubbles under the action of a background of random acoustic radiation, we highlight the contributions of radiative coefficient and absorption damping coefficient to the size of these forces.It is quantitatively demonstrated, for different radii of the oscillating bubbles, that the scattering absorption forces and the scattering scattering forces are close in magnitude.For superfluid helium, the forces change direction, oscillatingly, and the ratio of the forces is much less than one.

physics.gen-ph↗

arXiv2022

Phenomena in bubbles cluster

Following some previous papers, we continue in this paper to give proof of the analogy between the acoustic world and the electromagnetic world. Hence we derive the expressions for: the scattering-scattering force (the electro-acoustic force) between the bubbles found in the inner cluster and the bubble found out of the cluster, the scattering-absorption force (the gravito-acoustic forces) between the bubbles found in the inner cluster, the gravito-acoustic forces between the cluster as a whole and an outer bubble, the temperature corresponding to the translational motion of the bubbles in the inner cluster and the average pressure of the acoustic radiation. The results of our calculus led us to find out that the absolute value of the average pressure of the acoustic radiation around a bubble is equal to the density of the energy of the electro-acoustic field, Eq. (10). This is the most important result of this paper. These densities are the densities of the energy corresponding to the oscillation of the bubble (the liquid around the bubble) that are involved in the interaction phenomenon between two oscillating bubbles. We have also demonstrated that the gravito-acoustic forces, at resonance, between the bubbles inside the cluster, generated by the absorption of energy in the bubbles, are proportional to the square of the virtual masses of the bubbles, Eqs. (29) and (30).

physics.gen-ph↗

arXiv2021

Electrostatic Interaction in Stochastic Electrodynamics

Assuming the charged particle to be a two-dimensional oscillator that scatters the classical background of zero-point field one can deduce the Coulomb force of the two interacting particles. The correct deduction of the force is conditioned by the equality between the natural angular frequency of the oscillator and the angular frequency of Zitterbewegung.

physics.gen-ph↗

arXiv2021

Gravitational interaction mediated by Classical Zero Point Field

By modeling the particle as a two-dimensional oscillator with the natural angular frequency equal to the Zitterbewegung frequency, the expression of the gravitational force between two particles is obtained. Gravitational force is the effect of the absorption-scattering of the CZPF background by the oscillators. The connection between the gravitational and the electrostatic interaction is obtained.

physics.gen-ph↗

arXiv2020

Dumb Hole Associated with an Oscillating Bubbles Cluster

In this paper, it is shown that in interaction with an oscillating bubbles cluster the fluid becomes inhomogeneous. The radial variation of the acoustic refractive index of the fluid generates an acoustic lens with spherical symmetry. When the focal length of the lens associated with the bubbles cluster is equal to the length of the position vector then the bubbles cluster behaves like a dumb hole. Unlike the properties of a bubble, the cluster, by compression under the action of attractive internal forces, can shrink its radius to become a dumb hole.

physics.flu-dyn↗

arXiv2004

The nature is simple in essence - on gravitation and electromagnetism unification

The proposed temporal fluctuations model attempt for a unitary vision on gravity, electromagnetism and inertia. On obtain Newton law of gravitation and Coulomb law by starting from simple principles. On obtain too the main results of General Relativity Theory and Electromagnetism. One of the major points of present work is to obtain unified potential, which allow a unitary description of gravity and electromagnetism. As consequence, on obtain supplemental effects responsible for conservation laws violation in certain closed systems. On maintain the validity of conservation laws only if those systems are coupling with vacuum. This fact can be used for energy production and/or transport. This proposed model opening to quantum and nuclear physics, but those subjects will be developed in a future work. Keywords: general relativity, gravitation, inertia, electromagnetism, Biefild-Brown effect

physics.gen-ph↗

arXiv2001

The Nature is Simple in Essence - Blueprint for Unification of Gravity and Electromagnetism

The Temporal Fluctuation Model proposed in present paper represents an attempt for a unitary vision for gravity, inertia and electromagnetism. We obtain the main results of General Relativity and Electromagnetism and the theory, until now, don't contain self-contradictions. As well, we obtain the "unified potential" which has terms that coupling gravitation with electromagnetism and who could be the basis for future technological applications.

physics.gen-ph↗

arXiv2001

Proposal for experimental verifying of Machian transient mass fluctuations

Starting from quoted papers it show that, applying Mach's principle, on obtains transient mass fluctuation by varying proper energy. It is show why the experiments performed until now measured a smaller effect than was predicted. On establish conditions for using gravitational energy by means of transient mass fluctuations. On suggest a new type of experiment for verify the effect of transient mass fluctuation.

gr-qc↗