Double diffusive staircases are experimentally investigated in a fluid layer with stabilizing temperature gradient and destabilizing of ion concentration. Gradients concentration maintained steady state within an electrochemical system. Staircases observed even if the density stratification is unstable. None previously proposed mechanisms for staircase formation can be recognized experiments. I...

We present a novel discretization method for nonlinear convection-diffusion equations and, in particular, for the compressible Navier-Stokes equations. The method is based on a Discontinuous Galerkin (DG) discretization for convection terms, and a mixed method using H(div) spaces for the diffusive terms. Furthermore, hybridization is used to reduce the number of globally coupled degrees of free...

The problem of the evolution double-diffusive convection in a plane layer under action external vibrations is solved numerically. A two-layered system miscible fluids placed vertical fields gravity and linear translational considered. former generator convection: due to difference diffusivity species dissolved, unstably stratified fluid regions are formed layer. Water used as continuous medium....

Detailed numerical analysis is presented for the effect of spaceship orbital transfer on solution convection during protein crystal growth under microgravity. The results show that the flow and mass transfer during protein crystal growth are unsteady in the process of orbital transfer. For the case of quasi-steady acceleration, the flow is so weak that the effect of flow on concentration field ...

Anticancer drugs executing their function intracellularly enter cancer cells via diffusive processes. Complementary to these slow processes, cells can be forced to incorporate drugs by convection - a more efficient transport process. Transmembrane convection is induced by moderately intense pulsed laser light (or light emitting diodes) changing the structure of nanoscopic water layers in cells....