PACS 82.39.-k – chemical kinetics in biological systems PACS 47.15.G-– fluid dynamics, low-Reynolds-number flows PACS 05.10.Gg – stochastic analysis methods (FokkerPlanck, Langevin, etc.) Abstract.-For a cell moving in hydrodynamic flow above a wall, translational and rotational degrees of freedom are coupled by the Stokes equation. In addition, there is a close coupling of convection and diffu...

Mantle convection is vital to our Earth system. The relentless deformation produced inside the Earth's mantle by slow, viscous creep has a far greater impact on our planet than might be immediately evident. Continuously reshaping the Earth's surface, mantle convection provides the enormous driving forces necessary to support large-scale horizontal motion in the form of plate tectonics and the a...

Abstract A model of the thermal and hydrodynamic structure subduction zone is proposed. This includes free convection flows in asthenospheric layer C (mantle transition zone). Temperature profiles subducting lithospheric plate, as well continental limb zone, are presented. The heat flux due to friction at contact between plate significantly affects transfer and, consequently, temperature field ...

Abstract The aim of this survey is to give a concise but technical and, as much possible, comprehensive introduction the resolution certain eigenvalue problems occurring in research field hydrodynamics via Chebyshev - $$\tau$$ τ method. While many details on construction mathematical models (for which we will...

Context. Some of the small-scale solar magnetic flux can be attributed to a dynamo (SSD) operating in near-surface convection. The SSD fields have consequences for granular convection, basal flux, and chromospheric heating. A similar mechanism is expected active convection other cool main-sequence stars, but this has not been investigated thus far. Aims. We aim investigate changes stratificatio...

We analyze different statements of the boundary value problem for convection equations in order to use Ostroumov–Birikh type exact solutions describing evaporative regimes two-layer systems liquids and gas–vapor mixtures filling a plane channel. The differ types conditions vapor concentration temperature functions on channel walls. discuss problems modeling flows channel, describe characteristi...

A thermal lattice Boltzmann method based on the BGK model has been used to simulate high Rayleigh number natural convection in a square cavity. The model uses the double populations approach to simulate hydrodynamic and thermal fields. The traditional lattice Boltzmann method on a uniform grid has unreasonably high grid requirements at higher Rayleigh numbers which renders the method impractica...

The Marangoni e#ect is a frequently observed phenomenon of enhancement of interphase mass transfer in liquid–liquid systems. Such an e#ect, originating from the hydrodynamic instability induced by surface tension sensitivity to surface concentration of transferred solute, is mathematically formulated and numerically simulated for slowly moving single spherical drops in an axisymmetric boundary-...

We report the XMM-Newton observation of a large X-ray flare from the Herbig Ae star V892 Tau. The apparent low mass companion of V892 Tau, V892 Tau NE, is unresolved by XMM-Newton. Nevertheless there is compelling evidence from combined XMM-Newton and Chandra data that the origin of the flare is the Herbig Ae star V892 Tau. During the flare the X-ray luminosity of V892 Tau increases by a factor...