The conditions for the onset of dissipation thermal instability with temperature-dependent viscosity in plane Couette flow a Newtonian fluid are analyzed. studied system consists horizontal layer confined between an adiabatic (fixed) lower wall and isothermal (moving) upper wall. Both exponential linear fluidity models considered order to account thermodependency fluid’s viscosity. stability an...

[1] Heterogeneous compositional mantle models are frequently invoked to explain some observations obtained from geochemistry and seismology. In particular, two regions in the Earth’s lower mantle, under the Pacific and Africa, are often interpreted as being either piles or superplumes of dense material. We perform numerical modeling of thermochemical convection in a three-dimensional spherical ...

Despite many advantages, hydrodynamic bearings tend to induce nonlinear vibrations on rotor systems at low external loads. The occurrence and also the amplitudes of these are very sensible operating conditions system such as gaseous cavitation, oil viscosity (strongly dependent temperature), bearing clearance (dependent metal temperature thermal expansion coefficients) or imbalance. This contri...

In recent years, there has been a significant effort to extract the temperature-dependent shear ($\eta/s$) and bulk ($\zeta/s$) viscosity over entropy ratios of quark-gluon plasma from global comparison heavy-ion data with results hydrodynamic simulations. However, anisotropic flow, which is arguably most sensitive probe viscosity, only an {\it effective\/} ratio, obtained by taking weighted av...

This paper aims the study of electrically conducting Newtonian fluid flow and heat transfer considering slip at moving belt with temperature dependent viscosity. A domain decomposition method (ADM) is employed to solve non-linear system equations. Explicit expressions are obtained for velocity profile distribution. Effect variable viscosity parameter, slip, Hartmann number, Brinkmann number Sto...

a new correlation function for the calculation of viscosity for five typical supercritical gases is presented using the rainwater-friend and modified enskog theory. it is shown that by using accurate value for the thermal pressure and co-volume in the modified enskog theory, this correlation function is suitable for calculation of the viscosity of supercritical gases, without any density and te...

The flexibility and curvature of duplex DNAs containing mismatched sites have been monitored as a function of temperature. The diffusion coefficients are dependent on the flexibility and the curvature of the DNA, and these have been determined by NMR-based methods. The diffusion coefficients, D, depend on a Boltzmann term and the viscosity of the solvent, eta, which is also temperature dependen...