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Extended Lagrangian particle-in-cell (ELPIC) code for inhomogeneous compressible flows

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Abstract

ELPIC, a macroparticle code for modeling complex nonstationary inhomogeneous compressible flows is described and demonstrated. It operates with Langrangian-type finite-sized rectangular particles with adjustable sizes. The dimensions of the particles smoothly adjust to peculiarities of the flow in order to minimize overlapping and gaps between the particles. The particles can divide in rarefaction waves to smoothly cover the simulated flow area. The particles carry mass, which is constant between divisions, and a number of chemical and thermodynamical properties of the substance they represent, including the index of the equation of state, chemical composition, mechanical properties, etc. The ELPIC approach combines the essential advantages of both Eulerian and Langrangian approaches, and overcomes the difficulties encountered by Nishiguchi and Yabe in their well-known code SOAP, based on conceptually similar principles.

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Authors and Affiliations

  1. Fluid Dynamics Research Center, Princeton University, 08544-0710, Princeton, New Jersey

    Alexander B. Konstantinov & Steven A. Orszag

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  1. Alexander B. Konstantinov
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  2. Steven A. Orszag
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Konstantinov, A.B., Orszag, S.A. Extended Lagrangian particle-in-cell (ELPIC) code for inhomogeneous compressible flows. J Sci Comput 10, 191–231 (1995). https://doi.org/10.1007/BF02089950

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  • DOI: https://doi.org/10.1007/BF02089950

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