AAS 207th Meeting, 8-12 January 2006
Session 30 Astrophysical Computations and Codes
Poster, Monday, 9:20am-7:00pm, January 9, 2006, Exhibit Hall

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[30.02] Introducing Flow-er: a Hydrodynamics Code for Relativistic and Newtonian Flows

P. M. Motl, J. E. Tohline, L Lehner (Louisiana State University)

We present a new numerical code (Flow-er) for calculating astrophysical flows in 1, 2 or 3 dimensions. We have implemented equations appropriate for the treatment of Newtonian gravity as well as the general relativistic formalism to treat flows with either a static or dynamic metric. The heart of the code is the recent non-oscillatory central difference scheme by Kurganov and Tadmor (2000; hereafter KT). With this technique, we do not require a characteristic decomposition or the solution of Riemann problems that are required by most other high resolution, shock capturing techniques. Furthermore, the KT scheme naturally incorporates the Method of Lines, allowing considerable flexibility in the choice of time integrators. We have implemented several interpolation kernels that allow us to choose the spatial accuracy of an evolution. Through the Cactus framework or independent code, Flow-er serves as a driver for the hydrodynamical portion of a simulation utilizing adaptive mesh refinement or on a unigrid. In addition to describing Flow-er, we present results from several test problems. We are pleased to acknowledge support for this work from the National Science Foundation through grants PHY-0326311 and AST-0407070.

If you would like more information about this abstract, please follow the link to http://charybdis.phys.lsu.edu/~patrickmotl. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: motl@rouge.phys.lsu.edu

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