In the present paper an analysis of mixed convection of an unsteady magneto hydrodynamic (MHD) flow of an incompressible viscous fluid through porous media due to a vertical porous stretching sheet in the presence of viscous dissipation, thermal radiation and heat source /sink has been carried out. The fluid considered is viscous and incompressible. The governing partial differential equations ...

The NANOGrav collaboration has recently reported evidence for the existence of a stochastic gravitational wave background in 1-100 nHz frequency range. We argue that such could have been produced by magneto-hydrodynamic (MHD) turbulence at QCD scale. From measurement one can infer magnetic field parameters: comoving strength close to microGauss and correlation length 10\% Hubble radius phase tr...

We present a STRUcture-Preserving HYbrid code - STRUPHY for the simulation of magneto-hydrodynamic (MHD) waves interacting with population energetic particles far from thermal equilibrium (kinetic species). The implemented model features linear, ideal MHD equations in curved, three-dimensional space, coupled nonlinearly to full-orbit Vlasov via current coupling scheme. algorithm is based on fin...

Rotating outflows from protostellar disks might trace extended magneto-hydrodynamic (MHD) disk winds (DWs), providing a solution to the angular momentum problem in accretion for star formation. In jet system HH 212, rotating outflow was detected SO around an episodic SiO. Here we spatially resolve this into three components: collimated aligned with SiO jet, wide-angle outflow, and evacuated cav...

In this paper, we present an entropy-stable Gauss collocation discontinuous Galerkin (DG) method on 3D curvilinear meshes for the GLM-MHD equations: single-fluid magneto-hydrodynamics (MHD) equations with a generalized Lagrange multiplier (GLM) divergence cleaning mechanism. For continuous entropy analysis to hold and ensure Galilean invariance in technique, system requires use of non-conservat...

We present results from an extensive survey of 64 cavities in the X-ray halos of clusters, groups and normal elliptical galaxies. We show that the evolution of the size of the cavities as they rise in the X-ray atmosphere is inconsistent with the standard model of adiabatic expansion of purely hydrodynamic models. We also note that the majority of the observed bubbles should have already been s...

Lightning arc attachments during swept strokes are key information in the lightning protection design of fast-moving aircraft, wind turbines, rockets, etc. However, numerical modeling has not achieved success to predict movement sweeping arcs due limited understanding complex multi-physics convolution fluid at present. This work builds a dynamic magneto-hydrodynamic (MHD) model based on setup l...

A magneto-hydrodynamic (MHD) stirrer that exhibits chaotic advection is designed, modeled, and tested. The stirrer can operate as a stand-alone component or it can be incorporated into a MHD-controlled network. The stirrer consists of a conduit equipped with individually controlled electrodes positioned along its opposing walls. The conduit is filled with an electrolyte solution and positioned ...

An analysis has been performed to study magneto-hydrodynamic MHD squeeze flow between two parallel infinite disks where one disk is impermeable and the other is porous with either suction or injection of the fluid. We investigate the combined effect of inertia, electromagnetic forces, and suction or injection. With the introduction of a similarity transformation, the continuity and momentum equ...

Abstract the metal component arc plasma at muzzle of railgun is simulated by magneto-hydro-dynamic(MHD) model, and flow field under interaction between armature jet during movement position modeled simulated. The sheath model considered in simulation near movement. According to calculation results MHD transient current curve through analyzed, based on results, electromagnetic armature-arc-rail ...