Abst rac t . Recent experiments (Weisberg, Kevrekidis & Smits 1997) have demonstrated that the centrifugal instability leading to Taylor vortex flow can be controlled by harmonic oscillations of the inner cylinder in the axial direction. Marques & Lopez (1997) used linear Floquet analysis to study the control of the instability for the flow between two infinite length co-axial cylinders. Howeve...

When a fluid that undergoes a vapor to liquid transition in the bulk is confined to a long cylindrical pore, the phase transition is shifted (mostly due to surface effects at the walls of the pore) and rounded (due to finite size effects). The nature of the phase coexistence at the transition depends on the length of the pore: for very long pores, the system is axially homogeneous at low temper...

Capacitance of dielectric coated metallic cylinder and truncated cone are evaluated using the method of moments based on pulse function and point matching. The analysis is based on boundary condition for the potential on the conductor surface and normal component of displacement density at the dielectric-free space interface. The total free charge on the conductor surface is found from the inve...

Quarter wavelength resonator provides a mean to create pressure drop at specified frequency. Design of hollow cylinder connected radially pipe was used and different lengths this tuned were measured. Correlation with computational approach using finite element method analysis (FEM) ANSYS acoustics capabilities achieved. Analytical formula for length quarter is compared an experimental measureme...

The response of a passive nerve cylinder (or dendritic tree in the equivalent cylinder representation) to random white noise input currents is determined. Results for the mean, variance and covariance of the depolarization are obtained for an arbitrary number of independent spatially distributed inputs. The case of a cylinder with sealed ends is considered in detail. The differences that arise ...

Polyacrylonitrile (PAN) nanofibers were prepared by a needleless electrospinning method using three rotating fiber generators, cylinder, disc and coil. The effects of the spinneret shape on the electrospinning process and resultant fiber morphology were examined. The disc spinneret needed the lowest voltage to initiate fiber formation, followed by the coil and cylinder. Compared to cylinder, th...