The Taylor-Couette system is one of the most studied examples of fluid flow exhibiting the spontaneous formation of dynamical structures. In this book the variety of time independent solutions with periodic spatial structure is numerically investigated by solution of the Navier-Stokes equations. Topics and questions addressed are: Mathematical modeling. Numerical modeling. What kinds of flow patterns do the equations allow in the nonlinear regime? How many solutions exist for given values of the control parameters? Are they stable? How do spatial patterns and the number of solutions vary with the parameters? For some parameter values many more solutions were found than previously expected (up to 21), in other parameter regimes not even those solutions could be found whose ecistence had been taken for granted. These "experimental" numerical results led to conjectures on the global strcuture of secondary bifurcations in the Taylor system and thus to possible explanations for existence and non-existence of solutions. These conjectures were verified and generalized for the mathematically closely related equations of Rayleigh-BA(c)nard convection, and they were numerically confirmed for the Taylor system. .
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