The magnetoconvection phenomenon of a double diffusive free convection in an annular porous space inside two concentric cylinders saturated by (Al2O3, water) nanofluid has been investigated the current study. transport equations for vorticity, energy and concentration as well stream function are solved using finite difference method. At lower temperatures concentrations, outer cylinder is susta...

In the natural gas heating process, cylinder-type heater using water as an intermediate medium is most extensively used. The heat exchange rate between and fire tubes in great-capacity cylinder appears to be important element affecting a heater’s thermal efficiency. flow field within new diversion-type with vertical guide plate design described this paper. contrast prior research that concentra...

In this paper we provide a modified 3D Uniform Theory of Diffraction (UTD) model for finite-length cylinder, and validate the by comparing to simulation measured data. The presented finite-cylinder UTD is adapted from conventional infinite-cylinder model, additionally add edge diffraction occurring at cap finite cylinder. reference obtained CST measurement vector network analyzer based channel ...

The inception voltage of the positive corona discharges (CIV) in a typical wire-cylinder electrode arrangement in air, under high voltage dc application, has been studied by implementing the Finite Element Analysis (FEA). Numerical analysis has been carried out on the electric field intensity, along the wire-cylinder gap axis, in order to determine the inception voltage of each air gap and defi...

We consider the effective motion along a cylinder of a particle that freely diffuses in the bulk and intermittently binds to the cylinder. From an exact approach we derive the different regimes of the effective motion along the cylinder characterized by physical rates for binding/unbinding and the bulk diffusivity. We obtain a transient regime of superdiffusion and, interestingly, a saturation ...

Exact solution is obtained for electromagnetic field around a conducting cylinder of infinite length and finite radius, with a periodical axial current, when the wave length is much larger than the radius of the cylinder. The solution describes simultaneously the fields in the near zone close to the cylinder, and transition to the wave zone. Proper long-wave oscillations of such cylinder are st...

We show that H-hypersurfaces of H × R contained in a vertical cylinder and with Ricci curvature with strong quadratic decay have mean curvature |H| > (n − 1)/n. Mathematics Subject Classification: (2000): 53C40, 53C42.

This paper presents the coating thickness effect on the stress distribution of a coated cylinder head. A typical thermal barrier coating was applied on a diesel engine cylinder head. Thus, the residual stress which occurred during the plasma thermal spraying was also considered. The coating system consisted of two layers a metallic bond coat and a ceramic top coat. The bond coat thickness is co...