Concept of hydrodynamic stability
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In the beginning of this chapter, based on elementary physical example, a general idea of stability of motion with respect to disturbances is introduced. Then it is conceptualized for fluid dynamic applications. Stability of fluid flows is categorized in regards of the behavior of kinetic energy of a disturbance in time and space. Finally, the notion of critical parameters at which the motion character changes from stable to unstable is formulated.
KeywordsReynolds Number Critical Reynolds Number Initial Disturbance Hydrodynamic Stability Conditional Stability
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