Pipe vibration induced by water hammer frequently emerges in conveyance system, especially the hydropower plant or pumped storage power station with long diversion pipelines. This turn affects hydraulic pulsation so that undesired fluid-structure interaction (FSI) arises. In this research, attention is given to a pipeline embedded concrete. A six-equation model was derived describe fluid-pipe-c...

We present a discussion of embedded vortices in general Yang-Mills theories. The origin of a family structure of solutions is shown to be group theoretic in nature and a procedure for its determination is developed. Vortex stability can be quantified into three types: Abelian topological stability, non-Abelian topological stability, and dynamical stability; we relate these to the family structu...