Coupled Fluid-Solid Interaction Under Shock Wave Loading: Part II - Dynamic Interfaces

Journal Article · Wed Jul 01 04:00:00 EDT 2009 · Sandia journal manuscript; Not yet accepted for publication

OSTI ID:1426931

Tipton, David Gregory ^[1]; Christon, Mark Allen ^[2]; Ingber, Marc Stuart ^[3]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
2. CTO Offce, Dassault Systµemes SIMULIA, Providence, RI (United States)
3. Univ. of New Mexico, Albuquerque, NM (United States). Department of Mechanical Engineering

This article is the second of two that consider the treatment of fluid-solid interaction problems where the solid experiences wave loading and large bulk Lagrangian displacements. In part-I, we presented the formulation for the edge-based unstructured-grid Euler solver in the context of a discontinuous- Galerkin framework with the extensions used to treat internal fluid-solid interfaces. A super-sampled L² projection was used to construct level-set data from the Lagrangian interface, and a narrow-band approach was used to identify and construct appropriate ghost data and boundary conditions at the fluid-solid interface. A series of benchmark problems were used to verify the treatment of the fluid-solid interface conditions with a static interface position. In this paper, we consider the treatment of dynamic interfaces and the associated large bulk Lagrangian displacements of the solid.We present the coupled dynamic fluid-solid system, and develop an explicit, monolithic treatment of the fully-coupled system. The conditions associated with moving interfaces and their implementation are discussed. A comparison of moving vs. fixed reference frames is used to verify the dynamic interface treatment. Lastly, a series of two and and three-dimensional projectile and shock-body interaction calculations are presented. Ultimately, the use of the Lagrangian interface position and a super-sampled projection for fast level-set construction, the narrow-band extraction of ghost data, and monolithic explicit solution algorithm has proved to be a computationally efficient means for treating shock induced fluid-solid interaction problems.

• 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: 1426931
• Report Number(s): SAND--2009-4161J; 476574
• 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

Related Subjects

42 ENGINEERING
97 MATHEMATICS AND COMPUTING
Euler equations
Fluid-solid interaction
Riemann problem
discontinuous Galerkin
interface conditions
level-set
shock loading
super-sampled projection