کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6933462 867595 2013 32 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An Eulerian algorithm for coupled simulations of elastoplastic-solids and condensed-phase explosives
ترجمه فارسی عنوان
یک الگوریتم یولر برای شبیه سازی های مواد جامد الاستوپلاستیک و مواد منفجره فاز
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نرم افزارهای علوم کامپیوتر
چکیده انگلیسی
In the presented algorithm, the ghost-fluid method is employed to represent the evolving material interfaces as discontinuities on discrete space. The coupling between the materials at these interfaces is achieved by means of a new approximate mixed Riemann solver, developed as part of this research. In addition we present a mixed Riemann solver for a simpler transport model, which ignores compaction effects at the interface. The robustness and accuracy of the developed solvers is demonstrated by comparisons against results from the original ghost-fluid method and exact solutions of model Riemann problems. To allow for more realistic material behaviour, the mixed Riemann solvers are subsequently extended to handle the shock Mie-Grüneisen equation of state, and an iterative procedure is suggested to increase accuracy as required. These mixed Riemann solvers demonstrate their suitability for explosive-solid interactions in two test cases of multi-phase detonations confined by an elastic-plastic solid.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Computational Physics - Volume 252, 1 November 2013, Pages 163-194
نویسندگان
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