کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8141473 | 1523735 | 2016 | 21 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Radiation hydrodynamics using characteristics on adaptive decomposed domains for massively parallel star formation simulations
ترجمه فارسی عنوان
هیدرودینامیک تابش با استفاده از خصوصیات در حوزه های انحرافی انطباق برای شبیه سازی شکل گیری ستارگان انبوه
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
انتقال شعاعی، هیدرودینامیک، تشکیل ستاره،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
چکیده انگلیسی
We present an algorithm for solving the radiative transfer problem on massively parallel computers using adaptive mesh refinement and domain decomposition. The solver is based on the method of characteristics which requires an adaptive raytracer that integrates the equation of radiative transfer. The radiation field is split into local and global components which are handled separately to overcome the non-locality problem. The solver is implemented in the framework of the magneto-hydrodynamics code FLASH and is coupled by an operator splitting step. The goal is the study of radiation in the context of star formation simulations with a focus on early disc formation and evolution. This requires a proper treatment of radiation physics that covers both the optically thin as well as the optically thick regimes and the transition region in particular. We successfully show the accuracy and feasibility of our method in a series of standard radiative transfer problems and two 3D collapse simulations resembling the early stages of protostar and disc formation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy - Volume 43, February 2016, Pages 49-69
Journal: New Astronomy - Volume 43, February 2016, Pages 49-69
نویسندگان
Lars Buntemeyer, Robi Banerjee, Thomas Peters, Mikhail Klassen, Ralph E. Pudritz,