Turbulence is the most common state of astrophysical flows. In typical astrophysical fluids, turbulence is accompanied by strong magnetic fields, which has a large impact on the dynamics of the turbulent cascade. Recently, there has been a significant breakthrough on the theory of magnetohydrodynamic (MHD) turbulence. For the first time we have a scaling model that is supported by both observat...

introduction membrane bioreactor (mbr) is an effective technology for wastewater treatment and water reuse which is becoming increasingly popular due to its numerous applications and advantages over conventional activated sludge process. this novel technology have advantages of small footprint, high concentration of mixed liquor suspended solids (mlss), high removal efficiency of chemical oxyge...

Recent years have seen tremendous progress in our understanding of the extreme universe, which in turn points to even deeper questions to be further addressed. History has shown that the symbiosis between direct observations and laboratory investigation is instrumental in the progress of astrophysics. Current frontier astrophysical phenomena related to particle astrophysics and cosmology typica...

Abstract Turbulence is ubiquitous in the universe and fluid dynamics. It influences a wide range of high energy density systems, from inertial confinement fusion to astrophysical-object evolution. Understanding this phenomenon crucial, however, due limitations experimental numerical methods plasma complete description turbulent spectrum still lacking. Here, we present measurement down micron sc...

Large scale cosmological simulations such as galaxy and star formation are of great interest to cosmologists. These simulations are done by consideration of relativistic, compressible, discontinuous fluids. Many techniques from particle based to adaptive meshing have been explored, each with advantages and disadvantages. Here, the limitations of centroidal Voronoi tessellations with these astro...

Turbulence is the most common state of astrophysical flows. In typical astrophysical fluids, turbulence is accompanied by strong magnetic fields, which has a large impact on the dynamics of the turbulent cascade. Recently, there has been a significant breakthrough on the theory of magnetohydrodynamic (MHD) turbulence. For the first time we have a scaling model that is supported by both observat...

This report presents a review of the material covered at the workshop on ”Coordinated Mathematical Modeling of Internal Waves”. The scope of the workshop was very broad, covering internal wave dynamics that arises in geophysical and astrophysical contexts. Five plenary lectures were given on the topics of oceanic, atmospheric and astrophysical internal waves. The presenters of these five lectur...

In turbulent high-beta astrophysical plasmas (exemplified by the galaxy cluster plasmas), pressure-anisotropy-driven firehose and mirror fluctuations grow nonlinearly to large amplitudes, deltaB/B approximately 1, on a time scale comparable to the turnover time of the turbulent motions. The principle of their nonlinear evolution is to generate secularly growing small-scale magnetic fluctuations...

Massive bosonic fields in the background of a Kerr black hole can either trigger superradiant instabilities (black-hole bombs) or form equilibrium configurations corresponding to pure bound states, known as stationary scalar clouds. Here, similar phenomena are shown emerge fluctuation dynamics rotating photon-fluid model. In presence suitable vortex flows, density fluctuations governed by massi...

Abstract This paper presents (Lagrangian) variational formulations for single and multicomponent semi-compressible fluids with both reversible (entropy-conserving) irreversible (entropy-generating) processes. Semi-compressible are useful in describing low-Mach dynamics, since they soundproof . These models find wide use many areas of fluid including geophysical astrophysical dynamics. Specifica...