الفهرس Only 14 pages are availabe for public view
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Abstract
The plane is mainly concerned with stability of moved cylindrical fluids. The fluids are incompressible and viscous potential. The fluids are moved in zero gravity environment and in the presence (the absence) of external forces, such as, the magnetic field. The cylindrical coordinates are used to write the equations of motion and apply the suitable bounddary conditions by means of the multiple-scales method we can get the stability conditions. This thesis consists of three chapters: Chapter one is a general introduction. This chapter inncludes the fundamental aspects of the topic and the previious studies related to the subject of the research, we introoduced the fundamental concepts of hydrodynalnic stability and its various applications and the concepts of cylindrical fluids and viscous potential fluids and mentioned some reesearches in this field. The boundary conditions are derived. We explained the technique followed in this respect which is the multiple-scales method which is used to solve SOIlle diffferential equations that had unknown solution.