HR: 1340h
AN: SM13A-0323    [Abstracts]
TI: Global Hybrid Simulations: Nuts and Bolts
AU: * Vu, H X
EM: vu.hoanh@gmail.com
AF: SciberQuest, Inc., Pacific Executive Plaza 777 South Highway 101, Suite 108, Solana Beach, CA 92075-2623 United States
AU: Karimabadi, H
EM: homak@sciberquest.com
AF: SciberQuest, Inc., Pacific Executive Plaza 777 South Highway 101, Suite 108, Solana Beach, CA 92075-2623 United States
AU: Krauss-Varban, D
EM: varban@ssl.berkeley.edu
AF: UC Berkeley, Space Sciences Laboratory, MC 7450 7 Gauss Way, Berkeley, CA 94720-7450 United States
AU: Omelchenko, Y
EM: yurio@sciberquest.com
AF: SciberQuest, Inc., Pacific Executive Plaza 777 South Highway 101, Suite 108, Solana Beach, CA 92075-2623 United States
AB: Traditionally global MHD simulations have been used to model the global dynamics of the magnetosphere while hybrid (electron fluid, kinetic ions) simulations have been applied to examine the physics of local boundaries and discontinuities. However, with improvements in simulation techniques and advances in computer technology it has become possible to extend the hybrid simulation to global scales. The extension of the hybrid paradigm from local to global scales requires specialized treatment as the simple application of this technique can lead to undesirable results and is computationally inefficient. In this presentation, we discuss the technology behind these codes and demonstrate their utility through several examples. Our approach is to use global hybrid simulations as a complementary rather than a replacement tool to global MHD simulations. Comparison and contrast of global MHD and hybrid simulation results performed in the same parameter regime can yield important insight about the underlying physics. We will illustrate this through several examples.
DE: 2723 Magnetic reconnection (7526, 7835)
DE: 2724 Magnetopause and boundary layers
DE: 2753 Numerical modeling
DE: 2784 Solar wind/magnetosphere interactions
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005