A new multidimensional AMR Hydro+Gravity Cosmological code
نویسنده
چکیده
A new cosmological multidimensional hydrodynamic and N-body code based on an Adaptive Mesh Refinement scheme is described and tested. The hydro part is based on modern high-resolution shock-capturing techniques, whereas N-body approach is based on the Particle Mesh method. The code has been specifically designed for cosmological applications. Tests including shocks, strong gradients, and gravity have been considered. A cosmological test based on Santa Barbara cluster is also presented. The usefulness of the code is discussed. In particular, this powerful tool is expected to be appropriate to describe the evolution of the hot gas component located inside asymmetric cosmological structures.
منابع مشابه
AMR Simulations of the Cosmological Light Cone: SZE Surveys of the Synthetic Universe
We present preliminary results from simulated large sky coverage (∼100 square degrees) Sunyaev-Zeldovich effect (SZE) cluster surveys using the cosmological adaptive mesh refinement N-body/hydro code Enzo. We have generated simulated light cones to match the resolution and sensitivity of current and future SZE instruments. These simulations are the most advanced calculations of their kind. The ...
متن کاملNon-Radiative Test of a New SPH Scheme
We adapt new schemes of gravitational N-body dynamics and smoothed particle hydrodynamics (SPH) to the tree N-body/SPH galactic chemodynamics code GCD+. The applied new schemes include the adaptive softening suggested by Price & Monaghan (2007), to improve the self-gravity calculation, and artificial viscosity and thermal conductivity suggested by Rosswog & Price (2007) and Price (2008), to mod...
متن کاملStudy of a Restricted Modified Gravity on astrophysical and cosmological scales
p { margin-bottom: 0in; direction: rtl; text-align: right; }p.ctl { font-size: 12pt; }a:link { color: rgb(0, 0, 255); } In this paper, we study a restricted modified gravity in which diffeomorphism symmetry is broken. We investigate the astrophysical implications of the model by using the corresponding gravitational potential. By using the weight function of the weak lensing , for the model,...
متن کاملCosmological Hydrodynamics with Adaptive Mesh Refinement A New High Resolution Code Called RAMSES
A new N-body and hydrodynamical code, called RAMSES, is presented. It has been designed to study structure formation in the universe with high spatial resolution. The code is based on Adaptive Mesh Refinement (AMR) technique, with a tree based data structure allowing recursive grid refinements on a cell-by-cell basis. The N-body solver is very similar to the one developed for the ART code (Krav...
متن کاملA new class of accurate, mesh-free hydrodynamic simulation methods
We present two new Lagrangian methods for hydrodynamics, in a systematic comparison with moving-mesh, smoothed particle hydrodynamics (SPH), and stationary (non-moving) grid methods. The new methods are designed to simultaneously capture advantages of both SPH and grid-based/adaptive mesh refinement (AMR) schemes. They are based on a kernel discretization of the volume coupled to a high-order m...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008