2-D studies of the multi-wavelength planar and spherical Rayleigh-Taylor instability with an automatically rezoned Lagrangian code
The Rayleigh-Taylor instability (RTI) plays an important role in several physical problems, including explosive stages of stellar evolution and inertial confinement fusion (ICF). In this paper a discrete rezoning technique is described, with its implementation in an ICF code, and its application to the study of the 2-D RTI, in both planar and spherical geometry. The method has been designed to fulfil the following goals: (i) to preserve features of the Lagrangian scheme such as mass resolution, boundary tracking, low level diffusion; (ii) to allow the code to simulate any fluid motion; (iii) to be fully automatic, requiring no user intervention while running a problem. The proposed technique has been devised for staggered-mesh, quadrilateral-zone, 2-D Lagrangian codes, and has been implemented in a multi-temperature plasma-fluid code for ICF.
Bibliographic Reference: Report: RT/NUCL/92/15 EN (1992)
Availability: Available from Servizio Studi e Documentazione, ENEA, Centro Ricerche Energia Frascati, C.P. 65-00044 Frascati, Roma (IT)
Record Number: 199310725 / Last updated on: 1994-11-29
Original language: en
Available languages: en