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Thermal Ablation Modeling for Silicate MaterialsA general thermal ablation model for silicates is proposed. The model includes the mass losses through the balance between evaporation and condensation, and through the moving molten layer driven by surface shear force and pressure gradient. This model can be applied in the ablation simulation of the meteoroid and the glassy ablator for spacecraft Thermal Protection Systems. Time-dependent axisymmetric computations are performed by coupling the fluid dynamics code, Data-Parallel Line Relaxation program, with the material response code, Two-dimensional Implicit Thermal Ablation simulation program, to predict the mass lost rates and shape change. The predicted mass loss rates will be compared with available data for model validation, and parametric studies will also be performed for meteoroid earth entry conditions.
Document ID
20160000290
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Chen, Yih-Kanq
(NASA Ames Research Center Moffett Field, CA United States)
Date Acquired
January 6, 2016
Publication Date
January 4, 2016
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
ARC-E-DAA-TN23553
Meeting Information
Meeting: AIAA 2016 SciTech Forum
Location: San Diego, CA
Country: United States
Start Date: January 4, 2016
End Date: January 8, 2016
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 582622.02.01.02.45.02.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
Ablation
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