کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
519767 | 867681 | 2012 | 20 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: FIVER: A finite volume method based on exact two-phase Riemann problems and sparse grids for multi-material flows with large density jumps FIVER: A finite volume method based on exact two-phase Riemann problems and sparse grids for multi-material flows with large density jumps](/preview/png/519767.png)
A robust finite volume method for the solution of high-speed compressible flows in multi-material domains involving arbitrary equations of state and large density jumps is presented. The global domain of interest can include a moving or deformable subdomain that furthermore may undergo topological changes due to, for example, crack propagation. The key components of the proposed method include: (a) the definition of a discrete surrogate material interface, (b) the computation of a reliable approximation of the fluid state vector on each side of a discrete material interface via the construction and solution of a local, exact, two-phase Riemann problem, (c) the algebraic solution of this auxiliary problem when the equation of state allows it, and (d) the solution of this two-phase Riemann problem using sparse grid tabulations otherwise. The proposed computational method is illustrated with the three-dimensional simulation of the dynamics of an underwater explosion bubble.
Journal: Journal of Computational Physics - Volume 231, Issue 19, 1 August 2012, Pages 6360–6379