We discuss the incorporation of relativistic modeling capabilities into the PERSEUS extended MHD simulation code for high-energy-density (HED) plasmas, and present the latest hybrid X-pinch simulation results. The use of fully relativistic equations enables the model to remain self-consistent in simulations of such relativistic phenomena as X-pinches and laser-plasma interactions. By suitable formulation of the relativistic generalized Ohm’s law as an evolution equation, we have reduced the recovery of primitive variables, a major technical challenge in relativistic codes, to a straightforward algebraic computation. Our code recovers expected results in the non-relativistic limit, and reveals new physics in the modeling of electron beam acceleration following an X-pinch. Through the use of a relaxation scheme, relativistic PERSEUS is able to handle nine orders of magnitude in density variation, making it the first fluid code, to our knowledge, that can simulate relativistic HED plasmas.
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15 December 2014
9TH INTERNATIONAL CONFERENCE ON DENSE Z PINCHES
3–7 August 2014
Napa, California
Research Article|
December 15 2014
Relativistic modeling capabilities in PERSEUS extended MHD simulation code for HED plasmas
Nathaniel D. Hamlin;
Nathaniel D. Hamlin
438 Rhodes Hall, Cornell University, Ithaca, NY, 14853,
USA
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Charles E. Seyler
Charles E. Seyler
Cornell University, Ithaca, NY, 14853,
USA
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AIP Conf. Proc. 1639, 80–83 (2014)
Citation
Nathaniel D. Hamlin, Charles E. Seyler; Relativistic modeling capabilities in PERSEUS extended MHD simulation code for HED plasmas. AIP Conf. Proc. 15 December 2014; 1639 (1): 80–83. https://doi.org/10.1063/1.4904782
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