Instability of a charging electrification annular fluid jet embedded in a bounded grounded tenuous medium

الملخص EN

The instability of a charging electrification annular fluid jet (having a very dense tar cylinder of negligblc motion) surrounded by a bounded rounded tenuous medium has been investigated.

A general eigen value relation is derived by utilizing Lagrangian energy principle.

Some of the work in the literature is considered to be a special case of the present analysis.

The analytical resutls are confirmed numerically.

The influence of the capilary or / and electrification surface on the instability of the model is examined whether the cylindrical surface of the mantle tar column is regular or irregular.

The capillary forces has a destabilizing effect for small axisymetric pertubation and a stabilizing effect of the problem parameters in all kinds of perturbation.

The charging electrification forces worsens the annular fluid capillary stability.