Event Title

Intercalibration Results. PATO Results for the 2011 Ablation Test-Case

Start Date

3-3-2011 9:05 AM

Description

A Pyrolysis and Ablation Toolbox based on OpenFOAM (PATO) is being developed for academic research purposes. Its purpose is to provide a modular research platform to test high-fidelity models for ablative materials subjected to high enthalpy flow conditions. The OpenFOAM open source CFD software package is used as a framework to produce this modular toolbox. Classes specifically needed to handle the pyrolysis-ablation problem (B’ table interpolation, equilibrium solver, etc) have been integrated into the object-oriented structure of OpenFOAM. Governing equations are written in a top-level solver in their mathematical form and may be modified to test new models. This allows the process of equation discretization to be avoided with the relevant finite-volume schemes and solvers being chosen at execution time. The current suite is composed of 3 modules:

  • PAM_1, implementation of the state-of-the-art CMA model;
  • PAM_2, 3D solver with a 3D treatment of the pyrolysis gas flow (averaged momentum equation);
  • PAM_3, currently in development, will be a high-fidelity module including finite-rate chemistry, multicomponent diffusion, in-depth ablation, and coking.

PATO results for the 2011 ablation test case will be presented in the ablation test-case overview session [5 minutes, 2 slides]. A description of PATO will be detailed in the poster session with a summary of the test case results and an illustration of a 3D case with 3D pyrolysis gas.

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Mar 3rd, 9:05 AM

Intercalibration Results. PATO Results for the 2011 Ablation Test-Case

A Pyrolysis and Ablation Toolbox based on OpenFOAM (PATO) is being developed for academic research purposes. Its purpose is to provide a modular research platform to test high-fidelity models for ablative materials subjected to high enthalpy flow conditions. The OpenFOAM open source CFD software package is used as a framework to produce this modular toolbox. Classes specifically needed to handle the pyrolysis-ablation problem (B’ table interpolation, equilibrium solver, etc) have been integrated into the object-oriented structure of OpenFOAM. Governing equations are written in a top-level solver in their mathematical form and may be modified to test new models. This allows the process of equation discretization to be avoided with the relevant finite-volume schemes and solvers being chosen at execution time. The current suite is composed of 3 modules:

  • PAM_1, implementation of the state-of-the-art CMA model;
  • PAM_2, 3D solver with a 3D treatment of the pyrolysis gas flow (averaged momentum equation);
  • PAM_3, currently in development, will be a high-fidelity module including finite-rate chemistry, multicomponent diffusion, in-depth ablation, and coking.

PATO results for the 2011 ablation test case will be presented in the ablation test-case overview session [5 minutes, 2 slides]. A description of PATO will be detailed in the poster session with a summary of the test case results and an illustration of a 3D case with 3D pyrolysis gas.