This numerical study compares single-phase forced convective heat transfer between two sandwich panels with tetrahedral metallic lattice cores separately fabricated by investment casting and the more cost-effective metal sheet folding method. The numerical model is validated against available experimental data. For a given Reynolds number and core porosity, the results reveal that the brazed sa...

To explain the phenomenon observed in previous experiments of kerosene-ignition failure scramjet combustors as kerosene temperature increases, we numerically investigate mixing characteristics a jet injected into cavity-based supersonic combustor at different injection temperatures by using compressible two-phase flow large-eddy simulation based on Eulerian–Lagrangian approach. The results indi...

The interaction of a magnetic vortex with a rotating magnetic field causes the nucleation of a vortexantivortex pair leading to a vortex polarity switching. The key point of this process is the creation of a dip, which can be interpreted as a nonlinear resonance in the system of certain magnon modes with nonlinear coupling. The usually observed single-dip structure is a particular case of a mul...

Diastolic fluid dynamics in the left ventricle (LV) has been examined in multiple clinical studies for understanding cardiac function in healthy humans and developing diagnostic measures in disease conditions. The question of how intraventricular filling vortex flow pattern is affected by increasing heart rate (HR) is still unanswered. Previous studies on healthy subjects have shown a correlati...

within a larger vortex ring, which includes centres (1) and (3). Counter-rotating centres in the dorsal vortex ring produce jet A; a second jet B develops later as a result of flow induced by the ventral tip vortex. Jets A and B are directed on average at 35° to the freestream flow, before combining to produce a single broad jet C. Initially, little downstream flow is seen between same-sign vor...

Transient energy growth of disturbances to co-rotating vortex pairs is investigated in an analysis where vortex core expansion and vortex merging are included. The dynamics of pairs are compared to those of individual vortices in order to highlight the effect of vortex interaction. Three typical vortex pair cases are studied, with the pairs comprised respectively of individually asymptotically ...

Understanding the trajectory of oil droplets in crossflow jets is important to estimate pathways hydrocarbons and plan countermeasures. We report experimental results an jet with release velocity around 1.5 m/s a 0.3 m/s. The hydrodynamics obtained Large Eddy Simulation (LES) were used predict migration droplets. Two Lagrangian techniques explored, one inertia droplet considered other that trea...