Dietrich Lortz

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Dietrich Lortz (born August 8, 1935 in Massen ; † April 19, 2013 in Munich ) was a German physicist .

Lortz received his doctorate in Munich in 1962 (title of the dissertation: instabilities of stationary convection currents of finite amplitude ) and completed his habilitation in Munich in 1969 with the habilitation thesis: On the existence of toroidal magnetohydrostatic equilibria without rotational transformation . From then on he taught as an adjunct university professor in Munich and did research at the Max Planck Institute for Plasma Physics .

He dealt theoretically with magnetohydrodynamics and hydrodynamics, for example with applications to the plasmas in tokamaks and in stellarators (partly with Jürgen Nührenberg in the 1970s and 1980s) and the earth's magnetic field. A hydrodynamic instability of the convection flow of rotating liquids is named after him and Günter Küppers ( Küppers-Lortz instability ). In 1968 he gave a particularly elegant ( Friedrich Hermann Busse ) analytical solution to the kinematic dynamo problem.

Works

  • with Günther Otto Spies : Asymptotic magnetic surfaces. , Plasma Physics, Volume 13, 1971, pp. 799-816
  • with Günther Otto Spies: Resistive spectrum of configurations without magnetic shear. Max Planck Institute for Plasma Physics, Garching 1984.
  • The dynamo problem. Max Planck Institute for Plasma Physics, Garching 1985.
  • Magnetohydrodynamics. Bibliographical Institute , Mannheim 1992.
  • Hydrodynamics. Bibliographical Institute, Mannheim 1993.

Individual evidence

  1. ↑ Published in Zeitschrift für Angewandte Physik und Mathematik (ZAMP), Volume 21, 1970, pp. 196–210
  2. ↑ For example ballooning mode instability of tokamaks: Lortz, Nührenberg Ballooning stability boundaries for the large aspect-ratio tokamak , Phys. Letters A, 68, 1978, 49
  3. ↑ D. Lortz, W. Lotz, J. Nührenberg, F. Cap: Three-dimensional Analytical Force-free MHD Equilibria. In: Journal of Nature Research A . 36, 1981, pp. 144–149 ( PDF , free full text).
  4. ^ G. Küppers, D. Lortz: Transition from Laminar Convection to Thermal Turbulence in a Rotating Fluid Layer. In: Journal of Fluid Mechanics. 35, No. 03, 1969, pp. 609-620
  5. ↑ Busse The Generation of the Earth's Magnetic Field I. , Physikalische Blätter, Volume 32, October 1976, 441
  6. ^ Lortz, Exact solutions of the hydromagnetic dynamo problem , Plasma Physics 10, 1978, 967
personal data
SURNAME Lortz, Dietrich
BRIEF DESCRIPTION German physicist
DATE OF BIRTH August 8, 1935
PLACE OF BIRTH Crowds
DATE OF DEATH April 19, 2013
Place of death Munich