A coherent jet oxygen supply plays a key role in the process of electric arc furnace steelmaking: it provides necessary for smelting molten steel and promotes flow pool. Compared with jets current use, supersonic combustion shrouded methane gas could improve impact capacity stirring intensity In order to reduce cost, characteristics shrouding nitrogen mixtures must be studied. Computational flu...

SEPTEMBER 2014 AMERICAN METEOROLOGICAL SOCIETY | precipitation amount is only the 18th highest of the analogue time series, showing that even if the atmospheric conditions were favorable to wet conditions over Southern Europe, they do not fully explain the exceptional character of the precipitation anomaly. We conjecture that a potential amplifying cause could be that the oceanic air masses car...

Predicting the impact of human activities and their derivable consequences, such as global warming or direct wildlife mortality, is increasingly relevant in our changing world. Due to their particular life history traits, long-lived migrants are amongst the most endangered and sensitive group of animals to these harming effects. Our ability to identify and quantify such anthropogenic threats in...

Recent years have witnessed increased use of self-service technologies (SSTs) across the services sector, which has dramatically changed the nature of the service delivery process. Although an abundance of research has investigated how customers evaluate a new SST and what drives the initial adoption, little is known about how customers interact with, and adapt to, an SST after their first expe...

This paper discusses several open questions relevant to the dynamics of oceanic planetary waves, to their effects on phytoplankton and to their role in climate change. These questions have been prompted by the last two decades of satellite observations of planetary waves – initially with altimeters but now also with SST and ocean colour – which have also stimulated significant advances in our t...

In the present work, we propose a reformulation of the fluxes and interpolation calculations in the PISO method, a well-known pressure-correction solver. This new reformulation introduces the AUSM up flux definition as a replacement for the standard Rhie and Chow method of obtaining fluxes and central interpolation of pressure at the control volume faces. This algorithm tries to compatibilize t...

A review of recent and historical work in the field of transonic and supersonic ground effect aerodynamics has been conducted, focussing on applied research on wings and aircraft, present and future ground transportation, projectiles, rocket sleds and other related bodies which travel in close ground proximity in the compressible regime. Methods for ground testing are described and evaluated, n...

We present the construction and report on the experimentation of a shapeoptimization method applied to the aerodynamic design of a transonic or supersonic business jet. The main numerical ingredients are: a 3D unstructured-grid compressible-flow finite-volume solver, free-form deformation approach for shape and mesh movement based on self-adaptive and multilevel 3D tensorial Bézier polynomial r...

A 29-year-old man was admitted to our hospital for further examination of elevated liver enzymes, hepatosplenomegaly, thrombocytopenia and pericardial/pleural effusions. Fibroscan (EchoSens, Paris, France) and supersonic shear imaging (Aixplorer Supersonic Imagine, Aixen-Provence, France) revealed increased liver stiffness, consistent with cirrhosis (Picture A). A liver biopsy was performed and...

The current study numerically investigates an active mixing enhancement technique for a supersonic ejector with constant area chamber operating under the critical regime. Streamwise control jet injections are alternatively pulsed at top and bottom sides of entrance. induced oscillation primary enhances bulk between secondary streams. stream penetrates core flow much upstream strategy compared t...