Code-to-code comparison of an explosively fired projectile
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Subramanian, Gopinath Santhana Ganapathy↗
Engineering topics
Subramanian, Gopinath Santhana Ganapathy
Publications and source records attributed to Subramanian, Gopinath Santhana Ganapathy.
Comparison of two pressure–temperature equilibration methods
We compare and contrast the traditionally used method of solving the pressure–temperature equilibration problem in hydrodynamics, where specific internal energy and density are considered independent variables, with a different method where pressure and temperature are independent variables. With the goal of examining the robustness of the two methods as the number of components increases, we examine 2-, 4-, 6-, and 8-component systems. After equilibrating more than 10 4 initial conditions for each system using both methods, we demonstrate that the latter method constrains the search space by lowering its dimensionality and forces a better initial guess, resulting in a higher probability of convergence to solution with fewer, cheaper iterations.
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗
PAGOSA Theory Manual
PAGOSA is a computational fluid dynamics program developed at LANL for the study of high-speed compressible flow and high-rate material deformation. PAGOSA is a three-dimensional Eulerian finite-difference code, solving problems with a wide variety of EOS, material strength, and explosive modeling options. This document presents the finite difference equations that are used in the PAGOSA continuum mechanics computer code. This program is especially intended to be used for the numerical simulation of the interactions of gases, fluids, and solids.
36 MATERIALS SCIENCE↗