Early LLNL Application Scaling Results on BlueGene/L

Cook, A W ; Greenough, J A ; Gygi, F ; Streitz, F H ; Kubota, A ; Bulatov, V V ; Louis, S

Lawrence Livermore National Laboratory

关键词: Lawrence Livermore National Laboratory;    99 General And Miscellaneous//Mathematics, Computing, And Information Science;    Thermal Conductivity;    Supernovae;    70 Plasma Physics And Fusion Technology;   

DOI  :  10.2172/15011401
RP-ID  :  UCRL-TR-207656
RP-ID  :  W-7405-ENG-48
RP-ID  :  15011401

美国|英语

来源: UNT Digital Library

【 摘 要 】

Miranda is a high order hydrodynamics code for computing fluid instabilities and turbulent mixing. It employs FFTs and band-diagonal matrix solvers for computing spectrally-accurate derivatives, combined with high-order integration methods for time advancement; e.g., fourth-order Runge-Kutta. Fluid properties, i.e., viscosity, diffusivity and thermal conductivity, are computed from kinetic theory. The code contains solvers for both compressible and incompressible flows. It has been used primarily for studying Rayleigh-Taylor (R-T) and Richtmyer-Meshkov (R-M) instabilities, which occur in supernovae and Inertial Confinement Fusion (ICF).