Intensive VLBI monitoring programs of jets in AGN are showing the existence of intricate emission patterns, such as upstream motions or slow moving and quasi-stationary componentes trailing superluminal features. Relativistic hydrodynamic and emission simulations of jets are in very good agreement with these observations, proving as a powerful tool for the understanding of the physical processe...

Upwelling jets flow alongshore in approximate geostrophic balance with the onshore pressure gradient induced by coastal upwelling. Observations of such jets have shown that they often move offshore downstream of capes, leaving a pool of upwelled water inshore. Comparisons are made between this behavior and the hydraulic transition of a potential-vorticity-conserving coastal current as it passes...

Once a transparent liquid jet is ablated by an intense nanosecond laser pulse, the blast breaks column into two sections with logarithmically growing gap that originates from center. We found acts like optical fiber which transmits few percent of pulsed energy upstream, leading to material removal nozzle orifice. The accompanied thermal explosion forms sunflower patterned sheet near present res...

3C 84 (NGC 1275) is the radio source at center of Perseus Cluster and exhibits a bright jet. We observed with Global Millimeter VLBI Array (GMVA) between 2008 2015, typical angular resolution $\sim$50 $\mu$as. The observations revealed consistent double nuclear structure separated by $\sim$770 gravitational radii assuming Black Hole mass 3.2 $\times 10^{8}$ $M_{\odot}$. region likely too broad ...

[1] A high resolution (0.08 at equator) HYbrid Coordinate Ocean Model (HYCOM) simulation is evaluated using observations for the period 1993–2003 for a western Pacific region containing the Kuroshio Extension (KE) (25–45 N and 135–180 E). Comparisons are made for the KE path and strength and for the upper ocean heat budget. The mean strength and path agree well with observations, except near th...

Local scouring in the downstream of hydraulic structures is one of the important issues in river and hydraulic engineering, which involves a lot of costs every year, so the prediction of the rate of scour is important in hydraulic design. Side weirs are the most important of hydraulic structures that are used in passing flow. This study investigate the scouring due to falling jet from side weir...

An analysis of linear wave modes associated with supersonic jets con ned inside an acoustically lined rectangular duct is presented. Mathematical formulations are given for the vortex-sheet model and continuous mean ow model of the jet ow pro les. Detailed dispersion relations of these waves in a two-dimensional con ned jet as well as an uncon ned free jet are computed. E ects of the con ning d...

The jet mixing of a co-flow jet (CFJ) airfoil is investigated to understand the mechanism of lift enhancement, drag reduction, and stall margin increase. Digital Particle Image Velocimetry, flow visualization and aerodynamic forces measurements are used to reveal the insight of the CFJ airfoil mixing process. At low AoA and low momentum coefficient, the mixing between the wall jet and mainflow ...

Nearby radio galaxies that contain jets are extensively studied with VLBI, addressing jet launching and the physical mechanisms at play around massive black holes. 3C 84 is unique in this regard, because combination of its proximity large SMBH mass provides a high spatial resolution to resolve complex structure base. For an angular scale 50 ${\mu}$as corresponds 200 - 250 Schwarzschild radii ($...