Fourth International Workshop on Ram Accelerators

J. Phys. IV France 10 (2000) Pr11-119-Pr11-130
DOI: 10.1051/jp4:20001113

Numerical simulation of the RAMAC Benchmark test

J.E. Leblanc¹, M. Nusca², X. Wang³, F. Seiler⁴, M. Sugihara¹ and T. Fujiwara<sup>1

1</sup>  Department of Aerospace Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
²  U.S. Army Research Laboratory, Ballistics and Weapons Concepts Division, AMSRL-WM-BE, Aberdeen Proving Ground, MD 21005-5066, U.S.A.
³  Center for Advanced Numerical Engineering Simulations, School of Mechanical and Production Engineering, Nanyang Technological University, Singapore 639798
⁴  French-German Research Institute of Saint-Louis, ISL, 5 rue du Général Cassagnou, 68301 Saint-Louis cedex, France

Abstract
Numerical simulations of the same ramac geometry and boundary conditions by different numerical and physical models highlight the variety of solutions possible and the strong effect of the chemical kinetics model on the solution. The benchmark test was defined and announced within the community of ramac researchers. Three laboratories undertook the project. The numerical simulations include Navier-Stokes and Euler simulations with various levels of physical models and equations of state. The non-reactive part of the simulation produced similar steady state results in the three simulations. The chemically reactive part of the simulation produced widely different outcomes. The original experimental data and experimental conditions are presented. A description of each computer code and the resulting flowfield is included. A comparison between codes and results is achieved. The most critical choice for the simulation was the chemical kinetics model.

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