rayleigh-taylor (rt) instability has a growing importance in many fields including aircraft industry and astrophysics. the development and the growth of rt instability were investigated using sinusoidal disturbances with different wavelength at the interface of two fluids. numerical simulations were performed by solving navier-stokes unsteady equations with the vof formulation. results of the 2...

the rotation curves of a sample of 46 low- and high-surface brightness galaxies are considered in the context of milgrom's modi_ed dynamics (mond) to test a new interpolating function proposed by zhao et al. (2010) [1] and compare with the results of simple interpolating function. the predicted rotation curves are calculated from the total baryonic matter based on the b-band surface photometry,...

it is inferred from the symmetrical and luminous x-ray emission of fossil groups that they are mature, relaxed galaxy systems. cosmological simulations and observations focusing on their dark halo and inter-galactic medium properties confirm their early formation. recent photometric observations suggest that, unlike the majority of non-fossil brightest group galaxies (bggs), the central early-t...

Precession driven flows are of great interest for both, industrial and geophysical applications. While cylindrical, spherical spheroidal geometries have been investigated in detail, the numerically theoretically more challenging case a non-axisymmetric cavity has received less attention. We report experimental results on precessing triaxial ellipsoid, with focus base flow uniform vorticity, whi...

Parametric decay instability of lower hybrid waves plays an important role in plasma heating. Simulation such requires inclusion both electron and ion kinetics with a realistic mass ratio. In this work, the gyrokinetic fully kinetic (GeFi) particle simulation model is used to study parametric instabilities uniform, magnetized plasmas. A pump electric field near frequency imposed, which treated ...

Today, partially magnetized low-temperature plasmas (LTP) in an ExB configuration, where the applied magnetic field is perpendicular to self-consistent electric field, have important industrial applications. Hall thrusters, a type of electrostatic plasma propulsion, are one main LTP technologies whose advancement hindered by not-fully-understood underlying physics operation, particularly, with ...