Abstract In this paper interparticle potential model of the lattice Boltzmann method (LBM) is used to simulate deformation and breakup of a falling droplet under gravity force. First this model is applied to ensure that the surface tension effect is properly implemented in this model. Two tests have been considered. First, it has been checked an initial square drop in a 2D domain can freely def...

We explore the consequences of Lorentz noninvariance (LNI) for the Eotvos experiments in several models. It is shown that a violation of Lorentz invariance leads to an anomalous difference in the gravitational acceleration of two test masses which depends on their composition. Using the present experimental limits from the Eotvos experiments, we then derive a limit on the magnitude of a possibl...

If 5 V(r) actually describes the effects of a new force, and is not just a parametrization of some other systematic effects, then its presence would be expected to manifest itself elsewhere as well. Recently, we have Here VN(r) is the usual Newtonian potential energy for two masses m ~ 2 separated by a distance r, and 6 is the Newtonian constant of gravitation for r The geophysical data can the...

We have performed an Eotvos-type experiment at a site with a significant slope in the terrain. For an intermediate-range force coupled to baryon number (N+Z) we find the product of strength ao and range X, to be aQ = —0.04+'0.07 m for 25 & X & 400 m. At greater ranges the value and the error increase linearly to a+= —0.05+ 0.09 m at 1.6 km. If the coupling is quark-flavor dependent, i.e., is pu...

Hydrodynamics of multiple rising bubbles as a fundamental two-phase phenomenon is studied numerically by lattice Boltzmann method and using Lee two-phase model. Lee model based on Cahn-Hilliard diffuse interface approach uses potential form of intermolecular forces and isotropic finite difference discretization. This approach is able to avoid parasitic currents and leads to a stable procedure t...

Moravcsik Gyula 1892-ben szuletett es 1972-ben hunyt el. Szuletesenek halalanak kettős evfordulojat 2022-ben melto modon kivanja megunnepelni az egyetlen magyar bizantinologiai kutatointezet, Eotvos Jozsef Collegium Byzantium Kozpontja. A megemlekezes reszet kepezi, hogy a Kozpont tagjai 2017-ben elnyert tudomanyos palyazatuk kereteben (tobb egyeb alapkutatasi tevekenyseg mellett) 2022 vegere n...

Szebeni A.1, Varga I.2, Kovács B.3, Tolvaj Gy.4 and Zalatnai A.5 1MI Central Hospital, Ultrasonic Laboratory 2L. Eotvos University, Institute of Chemistry, Department of Analytical Chemistry 3University of Debrecen Centre for Agricultural and Applied Economic Sciences, Institute of Food Science, Quality Assurance and Microbiology 4MI Central Hospital, 1st Internal Department 5Semmelweis Univers...

A well-balanced hollow copper sphere freely floating and almost totally submerged in water is observed to move toward the nearby edge of a cliff'. This observation is consistent with a substance-dependent, medium-range force postulated in a recent reanalysis of the Eotvos experiment. Further measurements with difTerent elements and geometries will be required to establish definitely the existen...