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We present different simulations of primary atomization using an adaptive Volume-of-Fluid method based on octree meshes. The use of accurate numerical schemes for mesh adaptation, Volume-of-Fluid advection and balanced force surface tension calculation implemented in Gerris, the code used to perform the simulations included in this work, has made possible(More)
We perform numerical simulations of two-phase liquid-gas sheared layers, with the objective of studying atomization. The Navier-Stokes equations for two-dimensional incompressible flow are solved in a periodic domain. A Volume of Fluid (VOF) method is used to track the interface. The density ratio is kept around 10. The calculations show good agreement with(More)
We investigate the linear and non-linear evolution of perturbations in a magnetohydro-dynamic channel flow with electrically insulating channel walls in which a strong magnetic field possesses an orientation orthogonal to the stream but parallel to the walls. Linear optimal perturbations and their maximum amplifications over finite time intervals are(More)
In this study we introduce linear poly(glycidol) (PG), a structural analog of poly(ethylene glycol) bearing side chains at each repeating unit, as polymer basis for bioink development. We prepare allyl- and thiol-functional linear PG that can rapidly be polymerized to a three-dimensionally cross-linked hydrogel network via UV mediated thiol-ene click(More)
OBJECTIVES The noradrenergic innervation of lymphoid organs controls several immune cell functions and local blood perfusion. Considering that cell and antigen uptake depend on the blood supply to lymphoid organs, the hypothesis was tested that feedback signals from activated immune cells control sympathetic vasomotor activity. METHODS We determined the(More)
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We examine the changes in kinetic energy dissipation of a turbulent channel flow caused by a spanwise magnetic field. The numerical study is based on our simulation data from [1] obtained by direct and large eddy simulations. We find that the Joule dissipation can exceed the viscous dissipation in the weakly dissipative bulk region, but remains(More)