ALEGRA Validation Studies for Regular, Mach, and Double Mach Shock Reflection in Gas Dynamics

Technical Report · Sun Sep 01 04:00:00 EDT 2002

DOI:https://doi.org/10.2172/801392· OSTI ID:801392

CHEN, MARY I ^[1]; TRUCANO, TIMOTHY G

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1. Sandia National Laboratories

In this report we describe the performance of the ALEGRA shock wave physics code on a set of gas dynamic shock reflection problems that have associated experimental pressure data. These reflections cover three distinct regimes of oblique shock reflection in gas dynamics--regular, Mach, and double Mach reflection. For the selected data, the use of an ideal gas equation of state is appropriate, thus simplifying to a considerable degree the task of validating the shock wave computational capability of ALEGRA in the application regime of the experiments. We find good agreement of ALEGRA with reported experimental data for sufficient grid resolution. We discuss the experimental data, the nature and results of the corresponding ALEGRA calculations, and the implications of the presented experiment--calculation comparisons.

• Research Organization: Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 801392
• Report Number(s): SAND2002-2240
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
A CODES
EQUATIONS OF STATE
FLUID MECHANICS
GASES
PERFORMANCE
REFLECTION
SHOCK WAVES
VALIDATION