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Numerical study of spallation phenomenon in an arc-jet environment

AIAA AVIATION 2014 -11th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, Page: 1-16
2014
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Conference Paper Description

The spallation phenomenon might affect the aerodynamic heating rates of re-entry vehicles. To investigate spallation effects, a code is developed to compute the dynamics of spalled particles. The code uses a finite-rate chemistry model to study the chemical interactions of the particles with the flow field. The spallation code is one-way coupled to a CFD solver that models the hypersonic flow field around an ablative sample. Spalled particles behavior is numerically studied for argon and air flow field. The chemistry model is compared with that of Park's model which complies with oxidation and sublimation and shows disagreement for nitridation.

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