The design and correct sizing of thermal protection systems of re-entry bodies requires reliable simulation tools that can compute surface recession rate and temperature histories under general heating conditions. A formulation of a finite-rate surface boundary conditions for carbonaceous material ablation with pyrolysis gas injection is developed and implemented in a 3-D reacting Navier-Stokes equation solver, to predict ablation response of carbon and carbon-phenolic heat shields on reentry space vehicles. Validation of the approach is carried out by comparison with literature experimental data. Results show a satisfactory agreement with data and emphasize that including nitridation reaction may yield a significant overprediction of graphite mass blowing rate.
Hypersonic Flow Analysis Including Finite Rate Ablation Thermochemistry / Bianchi, Daniele; Nasuti, Francesco; Paciorri, Renato; Onofri, Marcello. - (2013). (Intervento presentato al convegno 5th European conference for aeronautics and space sciences tenutosi a Monaco, Germania nel 1-5 july 2013).
Hypersonic Flow Analysis Including Finite Rate Ablation Thermochemistry
BIANCHI, DANIELE;NASUTI, Francesco;PACIORRI, Renato;ONOFRI, Marcello
2013
Abstract
The design and correct sizing of thermal protection systems of re-entry bodies requires reliable simulation tools that can compute surface recession rate and temperature histories under general heating conditions. A formulation of a finite-rate surface boundary conditions for carbonaceous material ablation with pyrolysis gas injection is developed and implemented in a 3-D reacting Navier-Stokes equation solver, to predict ablation response of carbon and carbon-phenolic heat shields on reentry space vehicles. Validation of the approach is carried out by comparison with literature experimental data. Results show a satisfactory agreement with data and emphasize that including nitridation reaction may yield a significant overprediction of graphite mass blowing rate.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
