To eliminate the requirement for skilled workers in Video cassette recorder (VCR) cylinder assembly lines, an automatic adjustment system for VCR magnetic heads on a rotating cylinder unit has been newly developed. The reconstructed image quality is strongly affected by magnetic head setting errors, such as; ( I ) Setting angle error for two symmetrically positioned head. (2) Rotational angle e...

An inverter controlled refrigeration system with a variable speed compressor is more efficient. In order to improve its efficiency and reliability in wide range of speed, a comprehensive simulation model for an inverter rotary compressor with single cylinder or dual cylinder is developed. The simulated results are compared with measured data. The variations of cooling capacity, input power, COP...

As a cylinder spins in an infinite media, viscous shear forces induce fluid motion and circular streamlines are generated. For Newtonian fluids, a simple analytical solution is possible and widely known. The hydrodynamics of nonNewtonian fluids, however, can be quite complex under such conditions. This paper investigates the behavior of a wide range of non-Newtonian fluids in the infinite cylin...

We consider a nonlinear 4th-order degenerate parabolic partial differential equation that arises in modelling the dynamics of an incompressible thin liquid film on the outer surface of a rotating horizontal cylinder in the presence of gravity. The parameters involved determine a rich variety of qualitatively different flows. We obtain sufficient conditions for finite speed of support propagatio...

Using the Frobenius series method (FSM), an analytical solution is developed to obtain mechanical stresses of thick spherical pressure vessels made of functionally graded materials (FGMs). The cylinder pressure vessel is subjected to uniform internal pressure. The modulus of elasticity is graded along the radial direction according to power functions of the radial direction. It is assumed that ...

A rotating suspension of nonbuoyant particles can develop striking inhomogeneities in particle concentration, with regular bands of high and low concentration along the symmetry axis. We report Stokes-flow simulations showing that the formation of axial bands is correlated with an inhomogeneous particle distribution in the radial plane. An order parameter, based on the average angular velocity ...