This study analyses the impact of particle polydispersity using Eulerian-Eulerian (EE) and Lagrangian-Eulerian (LE) modelling approaches in context wellbore cleaning operations drilling industry. Spherical particles sizes 0.5 mm, 0.75 mm 1 are considered, whereas a Power Law rheological model is used for fluid phase description. The EE approach implemented herein applies Kinetic Theory Granular...

A straight ahead walk in an embedded Eulerian graph G always passes from an edge to the opposite edge in the rotation at the same vertex A straight ahead walk is called Eulerian if all the edges of the embedded graph G are traversed in this way starting from an arbitrary edge An embedding that contains an Eulerian straight ahead walk is called an Eulerian embedding In this article we characteri...

Source/sink strengths and vertical flux distributions of carbon dioxide within and above a rice canopy were modelled using measured mean concentration profiles collected during an international rice experiment in Okayama, Japan (IREX96). The model utilizes an Eulerian higher-order closure approach that permits coupling of scalar and momentum transport within vegetation to infer sources and sink...

The closed cone of flag vectors of Eulerian partially ordered sets is studied. It is completely determined up through rank seven. HalfEulerian posets are defined. Certain limit posets of Billera and Hetyei are half-Eulerian; they give rise to extreme rays of the cone for Eulerian posets. A new family of linear inequalities valid for flag vectors of Eulerian posets is given.

In this study, a new continuum traffic model is established in consideration of the diverse reactivity effect that emerges from driving attention and vehicle’s inertia. To instigate effect, two functions are introduced, namely driver’s sensitivity function relying on flow field’s instantaneous density follows reverse tendency optimal velocity an inertial equilibrium assuming inertia coefficient...