Reliable estimation of shock position in shock-capturing compressible hydrodynamics codes

Conference · Tue Jan 01 00:00:00 EST 2008

DOI:https://doi.org/10.2514/6.2009-365· OSTI ID:956678

Nelson, Eric M ^[1]

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1. Los Alamos National Laboratory

The displacement method for estimating shock position in a shock-capturing compressible hydrodynamics code is introduced. Common estimates use simulation data within the captured shock, but the displacement method uses data behind the shock, making the estimate consistent with and as reliable as estimates of material parameters obtained from averages or fits behind the shock. The displacement method is described in the context of a steady shock in a one-dimensional lagrangian hydrodynamics code, and demonstrated on a piston problem and a spherical blast wave.The displacement method's estimates of shock position are much better than common estimates in such applications.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 956678
• Report Number(s): LA-UR-08-08056; LA-UR-08-8056; TRN: US201016%%2363
• Resource Relation: Conference: AIAA Aerospace Sciences Meeting ; January 5, 2009 ; Orlando, FL
• Country of Publication: United States
• Language: English

Related Subjects

97 MATHEMATICS AND COMPUTING
ALGORITHMS
APPROXIMATIONS
BLAST EFFECTS
COMPUTERIZED SIMULATION
EXPLOSIONS
HYDRODYNAMICS
LAGRANGIAN FUNCTION
MEETINGS
ONE-DIMENSIONAL CALCULATIONS
SHOCK WAVES