|Date: Friday, October 16, 2015
Location: 1084 East Hall (4:10 PM to 5:00 PM)
Title: The coupling of cell-centered and staggered-grid Lagrangian Hydrodynamics solvers in 2D
Abstract: Cell-centered (CCH) and staggered-grid (SGH) solvers are both useful in solving hydrodynamics equations in the Lagrangian formulation. CCH solvers have shown incredible promise in robustness, accuracy, and simplicity in Arbitrary Lagrangian-Eulerian (ALE) schemes. SGH solvers are often used in engineering applications to solve problems with nodal structure elements, such as beams or shells.
For the first part of this talk, we will discuss what a Lagrangian formulation of a problem is and what it means to be a cell-centered or staggered-grid solver for simple examples.
For the second part of this talk, we will look at an example from 2D hydrodynamics involving all of these concepts. We will discuss a hybrid method for coupling CCH and SGH solvers and compare the results from the hybrid method to the results from a strictly CCH solver and a strictly SGH solver on many different test problems. Visualization of how each solver performs on the test problems will be included. This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344.
Speaker: David Prigge
Institution: University of Michigan
Event Organizer: Derek Wood and Jeremy Hoskins