MIXING-MODEL SENSITIVITY TO INPUT PARAMETER VARIATION
Author(s)
JOSIAH BIGELOW, HUMBERTO SILVA III, C. RANDALL TRUMAN, PETER VOROBIEFF
Abstract
Amagat and Dalton mixing-models were analyzed to compare their thermodynamic prediction of shock states. Numerical simulations utilized the Sandra National Laboratories (SNL) shock hydrodynamic code CTH [1]. Simulations modeled the University of New Mexico (UNM) shock tube laboratory experimental series shocking a 1:1 molar mixture of helium (He) and sulfur hexafluoride (SF6). Five input parameters were varied for sensitivity analysis: driver section pressure; driver section density; test section pressure; test section density; and mixture ratio (mole fraction). We show via incremental Latin hypercube sampling (LHS) analysis that significant differences exist between Amagat and Dalton mixing-model predictions. The differences observed in predicted shock speeds, temperatures, and pressures grow more pronounced with higher shock speeds.
Keywords
Amagat, Dalton, verification, validation, incremental Latin hypercube sampling, shock tube
Related Book
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