Magnetic Field Saturation in the Riga Dynamo Experiment

After the dynamo experiment in November 1999 had shown magnetic field self-excitation in a spiraling liquid metal flow, in a second series of experiments emphasis was placed on the magnetic field saturation regime as the next principal step in the dynamo process. The dependence of the strength of the magnetic field on the rotation rate is studied. Various features of the saturated magnetic field are outlined and possible saturation mechanisms are discussed.Comment: 4 pages, 8 figure

History and results of the Riga dynamo experiments

On 11 November 1999, a self-exciting magnetic eigenfield was detected for the first time in the Riga liquid sodium dynamo experiment. We report on the long history leading to this event, and on the subsequent experimental campaigns which provided a wealth of data on the kinematic and the saturated regime of this dynamo. The present state of the theoretical understanding of both regimes is delineated, and some comparisons with other laboratory dynamo experiments are made.Comment: 8 pages, 5 figure, accepted for publication in Comptes Rendus Physiqu

Detection of a flow induced magnetic field eigenmode in the Riga dynamo facility

In an experiment at the Riga sodium dynamo facility, a slowly growing magnetic field eigenmode has been detected over a period of about 15 seconds. For a slightly decreased propeller rotation rate, additional measurements showed a slow decay of this mode. The measured results correspond satisfactory with numerical predictions for the growth rates and frequencies

Elektromagnetisches Hochleistungsruder III : Bericht über die Ruder-Messungen an der HSVA (10.-14.09 und 22.-26.10.2001) im Rahmen des Projektes: Kontrolle der nichtlinearen Dynamik von Strömungsgrenzschichten durch elektromagnetische Kräfte

[no abstract available

Elektromagnetisches Hochleistungsruder II : Bericht über die Ruder-Messungen an der HSVA (07.08. - 25.08.2000) im Rahmen des Projektes: Kontrolle der nichtlinearen Dynamik von Strömungsgrenzschichten durch elektromagnetische Kräfte

[no abstract available