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- Olaf Schmidtmann, Fred Feudel, Norbert Seehafer
- 1997

The usage of nonlinear Galerkin methods for the numerical solution of partial diieren-tial equations is demonstrated by treating an example. We desribe the implementation of a nonlinear Galerkinâ€¦ (More)

We have numerically studied the bifurcations and transition to chaos in a two-dimensional fluid for varying values of the Reynolds number. These investigations have been motivated by experiments inâ€¦ (More)

- Fred Feudel, Marcus Gellert, Sten RÃ¼diger, Annette Witt, Norbert Seehafer
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2003

The Roberts flow, a helical flow in the form of convectionlike rolls, is known to be capable of both kinematic and nonlinear dynamo action. We study the Roberts dynamo with particular attention beingâ€¦ (More)

- Fred Feudel, Norbert Seehafer, Laurette S. Tuckerman, Marcus Gellert
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2013

The multiplicity of stable convection patterns in a rotating spherical fluid shell heated from the inner boundary and driven by a central gravity field is presented. These solution branches thatâ€¦ (More)

- Fred Feudel, Kay Bergemann, +4 authors Rainer Hollerbach
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2011

Symmetry-breaking bifurcations have been studied for convection in a nonrotating spherical shell whose outer radius is twice the inner radius, under the influence of an externally applied centralâ€¦ (More)

- Fred Feudel, Laurette S. Tuckerman, Marcus Gellert, Norbert Seehafer
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2015

The dynamics and bifurcations of convective waves in rotating and buoyancy-driven spherical Rayleigh-BÃ©nard convection are investigated numerically. The solution branches that arise as rotating wavesâ€¦ (More)

Motivated by the successful Karlsruhe dynamo experiment, a relatively low-dimensional dynamo model is proposed. It is based on a strong truncation of the magnetohydrodynamic (MHD) equations with anâ€¦ (More)

- Diego L. Valladares, Stefano Boccaletti, Fred Feudel, Jiirgen Kurths
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2002

We discuss the emergence of a collective phase locked state in an open chain of N unidirectionally weakly coupled nonidentical chaotic oscillators. Such a regime is characterized by a Lyapunovâ€¦ (More)

An analytical estimate of the width of the generated chaotic layer in a time-periodically driven stream function model for the motion of passive tracers is discussed. It is based essentially on theâ€¦ (More)

- Fred Feudel
- 1990