A super-sampled projection method for level-set construction in fluid-solid interaction problems
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- CTO Offce, Dassault Sysemes SIMULIA, Providence, RI (United States)
- Univ. of New Mexico, Albuquerque, NM (United States). Department of Mechanical Engineering
Here, this paper considers the issues central to fast level-set construction for the general treatement of moving interfaces in coupled fluid-solid interaction problems where the Lagrangian solid experiences large bulk motion. The central idea is based on a super-sampled L2 projection, that in conjunction with a Lagrangian interface position, permits rapid identification of the solid interface in the fluid mesh and enables the imposition of boundary conditions for the fluid. A series of convergence studies are presented in terms of numerical quadrature and mesh refinement to illustrate the effectiveness of the super-sampled projection on unstructured grids. The extraction of the interface location based on distance functions is compared to the super-sampled projection method. Finally, it is shown that the extraction of an interface location based on a zero level-set converges as O(h) when compared to the exact interface location - suggesting that the availability of a Lagrangian interface description is always preferred.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1426932
- Report Number(s):
- SAND--2009-3685J; 476573
- Journal Information:
- Sandia journal manuscript; Not yet accepted for publication, Journal Name: Sandia journal manuscript; Not yet accepted for publication; ISSN 9999-0014
- Publisher:
- Sandia
- Country of Publication:
- United States
- Language:
- English
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