We briefly review and re-interpret recent experiInental results on shear-induced inhoInogeneous flows in coInplex fluids. These are usually explained in terIns of aInechanical instability of the non-linear flow regiIne. However, in at least two respects, the robustness of the two-state banded-flow regiIne and the kinetics of band forInation under shear, they present striking analogies with ordi...

The study of the basic model for incompressible two-phase flows with phase transitions in the case of equal densities, initiated in the paper Prüss, Shibata, Shimizu, and Simonett [16], is continued here with a stability analysis of equilibria and results on asymptotic behaviour of global solutions. The results parallel those for the thermodynamically consistent Stefan problem with surface tens...

We present a set based control ow analysis for an imperative concurrent object calculus extending the Fisher Honsell Mitchell functional object oriented calculus described in The analysis is shown to be sound with respect to a transition system semantics

We consider the isothermal Euler equations with phase transition between a liquid and a vapor phase. The mass transfer is modeled by a kinetic relation. We prove existence and uniqueness results. Further, we construct the exact solution for Riemann problems. We derive analogous results for the cases of initially one phase with resulting condensation by compression or evaporation by expansion. F...

Using a NASA database of state-to-state transition rates for N+N2, master equation studies are performed for various nonequilibrium heat bath conditions. In these master equation studies, relaxation of the rotational and vibrational modes, time variation of chemical composition, reaction rate coefficients, and average rotational and vibrational energy losses due to dissociation are each conside...

A new minimal coupling method is introduced. A general dissipa-tive quantum system is investigated consistently and systematically. Some coupling functions describing the interaction between the system and the environment are introduced. Based on coupling functions , some susceptibility functions are attributed to the environment explecitly. Transition probabilities relating the way energy flow...

Sweden has experienced a sharp increase in migration flows in the last decades. Projections estimate that the migrant population rate will continue to grow in the near future. Given the centrality of health for the successful engagement of individuals in society, health aspects of migration have emerged as an important area of study. In this research note, we present a brief overview of current...

We present stability analyses for the boundary-layer flow over broad cones (half-angle ψ > 40◦) rotating in imposed axial flows. Preliminary convective instability analyses are presented that are based on the Orr–Sommerfeld equation for a variety of axial-flow speeds. The results are discussed in terms of the limited existing experimental data and previous stability analyses on related bodies. ...

The ill-posedness arises from the influence of transition on the upstream boundary layer via the potential flow and the viscous displacement effect. When transition begins at xtr, both δ and H first decrease rapidly from their laminar values. The transition region therefore looks like a sink to the potential flow. This effective sink accelerates the upstream potential flow ue(x) towards the tra...

The purpose of this contribution is to present some examples for the use of recent data processing and visualization techniques for the study of unsteady vortical flows. The basic idea is to extract vortices, shear layers and data defining their current state from DNS data and to track their evolution in time. Some apparent signatures which help to get additional insight into the flow dynamics ...