Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-25T01:24:42.837Z Has data issue: false hasContentIssue false

Two disc dynamos with viscous friction and time delay

Published online by Cambridge University Press:  24 October 2008

A. E. Cook
Affiliation:
Teesside Polytechnic, Middlesbrough

Abstract

Two extensions of the Rikitake model are examined; the first includes viscous friction and the second includes time delay. By use of Liapounov's direct method the viscous system is shown to have an unstable limit cycle associated with two of the three singular points. By numerical integration true ‘reversals of field’ are shown to occur for both the viscous and time delay cases.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1972

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

(1)Bullard, E. C.Proc. Cambridge Philos. Soc. 51 (1955), 744.CrossRefGoogle Scholar
(2)Cox, A. J.Geophys. Res. 73 (1968), 3247.Google Scholar
(3)Rikitake, T.Proc. Cambridge Philos. Soc. 54 (1958), 89.Google Scholar
(4)Allan, D. W.Proc. Cambridge Philos. Soc. 58 (1962), 671.Google Scholar
(5)Cook, A. E. and Roberts, P. H.Proc. Cambridge Philos. Soc. 68 (1970), 547.CrossRefGoogle Scholar
(6)Malkin, I. G.Theory of Stability of Motion. U.S.A.E.C., 1952.Google Scholar
(7)Vestine, E. H., Ball, R. H. and Kahle, A. B. J.Geophys. Res. 72 (1967), 4927.CrossRefGoogle Scholar