In this paper, we investigate steady inviscid compressible flows with radial symmetry in an annulus. The major concerns are transonic or without shocks. One of the main motivations is to elucidate role played by angular velocity structure flows. We give a complete classification flow patterns terms boundary conditions at inner and outer circle. Due nonzero velocity, many new will appear. There ...

Particle Image Velocimetry (PIV) has become an important tool in modern flowfield diagnostics, in particular for subsonic flows. PIV systems have also been used to measure supersonic flows in supersonic wind tunnels, but only recently it has been shown that PIV can also be a valuable tool for high-speed supersonic flows in a shock tunnel (Haertig et al., 2001). At the ISL shock tunnel a PIV sys...

We close by describing two rather unusual applications of complex variables. The details are beyond the scope of this book, but the ideas involved definitely deserve mention. The first area of application is fluid dynamics. It was observed already in the nineteenth century that the equations describing the incompressibility and irrotationality of fluids are just the Cauchy-Riemann equations for...

The purpose of the present work is the analysis of equilibrium and stability properties of tokamak plasmas in the presence of macroscopic flow. First, the formulation of the equilibrium problem is reviewed. Toroidal flow produces a modification in the equilibrium profile due to the centrifugal force produced by the rotation in curved geometry. The effects of poloidal rotation are more surprisin...

We consider flows past airfoils which are irrotationai and subsonic for low Mach numbers at large distances from the airfoil. If the Mach number at infinity is gradually increased, at some particular value a small supersonic region appears in the flow next to the airfoil. The flow appears to remain without shocks. If the Mach number at infinity is increased still more, a definite observable sho...

Interannual copepod abundance (number m ) and sea surface temperatures (SST, 2-m depth) were examined from four stations in Icy Strait, southeastern Alaska, monthly from May to September, 1997e2002. SST was generally lowest in May (y7(C), increased rapidly to a summer peak (y12(C), and declined again by September. SST was relatively high in the El Niño year, 1998, and was low during a regional ...

Textularia agglutinans d'Orbigny is a non-symbiont bearing and comparatively large benthic foraminiferal species with a widespread distribution across all oceans. In recent years, its populations have considerably expanded along the Israeli Mediterranean coast of the eastern Levantine basin. Despite its exceptionally widespread occurrence, no molecular data have yet been obtained. This study pr...

The topic is very relevant and important because seasonal prediction is still a very active area of research. Thus, any advance in this area will be welcome. However, I am not convinced about the interpretation and the mechanism that connects mixing in summer with rainfall in winter. As the authors mention other works have already found a connection between summertime north Atlantic SST and win...