Smoothed Particle Hydrodynamics and the Simulation of Galaxy and Large-Scale Structure Formation

Details Smoothed Particle Hydrodynamics and the Simulation of Galaxy and Large-Scale Structure Formation Smoothed Particle Hydrodynamics and the Simulation of Galaxy and Large-Scale Structure Formation

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993rmxaa..27..187s&link_type=abstract

Revista Mexicana de Astronomia y Astrofisica, 27, 187

Astronomy and Astrophysics

Astronomy

4

Scientific paper

RESUMEN A continuaci6n describiremos el desarrollo de un nuevo metodo llamado Hidrodinamica de Particulas Suavizada Adaptiva (ASPH), generalizado para cosmologia y acoplado al metodo de Malla de Particulas (PM) para resolver la ecuaci6n de Poisson, para la simulaci6n de formaci6n de galaxias y estructura de gran escala. La simulaci6n numerica precisa de fen6menos de choques y causticos con alto grado de no-linearidad, que ocurren generalmente en el proceso de formaci6n de estructuras requiere un intervalo dinamico de resoluci6n enormes. Los metodos numericos existentes no pueden alcanzar la resoluci6n requerida con la tecnologia computacional actual. El progeso a la resoluci6n de este problema sera' presentado a continuaci6n. ABSTRACT The development of a new method, called Adaptive Smoothed Particle Hydrodynamics (ASPH), generalized for cosmology and coupled to the Particle Mesh (PM) method for solving the Poisson Equation, for the simulation of galaxy and large-scale structure formation, will be described. The accurate numerical simulation of the highly nonlinear phenomena of shocks and caustics which occur generically in the process of structure formation requires enormous dynamic range and resolution. Existing numerical methods cannot achieve the required resolution with current computer technology. Progress toward the solution of this problem will be presented. Key words: COSMOLOGY: THEORY - GALAXY: FORMATION HYDRODYNAMICS - INTERGALACTIC MEDIUM - METH- ODS: NUMERICAL SHOCK WAVES

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