Smoothed Particle Hydrodynamics Coupled with Radiation Transfer | Zendy

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Smoothed Particle Hydrodynamics Coupled with Radiation Transfer

Author(s) -

Hajime Susa

Publication year - 2006

Publication title -

publications of the astronomical society of japan

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.99

H-Index - 110

eISSN - 2053-051X

pISSN - 0004-6264

DOI - 10.1093/pasj/58.2.445

Subject(s) - physics , smoothed particle hydrodynamics , radiative transfer , solver , radiation , code (set theory) , speedup , ideal (ethics) , particle (ecology) , test particle , computational physics , computational science , astrophysics , parallel computing , nuclear physics , classical mechanics , quantum mechanics , computer science , programming language , philosophy , oceanography , set (abstract data type) , epistemology , geology

We have been constructed a brand-new radiation hydrodynamics solver basedupon Smoothed Particle Hydrodynamics (SPH), which works on parallel computersystem. The code is designed to investigate the formation and evolution of thefirst generation objects at $z \gtrsim 10$, where the radiative feedback fromvarious sources play important roles. The code can compute the fraction ofchemical species e, H$^+$, H, H$^-$, H$_2$, and H$_2^+$ by fully implicit time integration. It also candeal with multiple sources of ionizing radiation, as well as the radiation atLyman-Werner band. We compare the results for a few test calculations with theresults of one dimensional simulations, in which we find good agreements witheach other. We also evaluate the speedup by parallelization, that is found to be almostideal, as far as the number of sources is comparable to the number ofprocessors.Comment: 19pages, 10figures, PASJ accepte

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