Numerical solution of two-dimensional ablation problems using the finite control volume method with unstructured grids
This paper presents the solution of two-dimensional axisymmetric ablation problems with unstructured grids. The energy equation is formulated and solved using the Finite Control Volume Method. The exterior shape of the ablating body is determined from a surface energy balance with the interior mesh displaced in response to the surface ablation as if the body was a linear elastic solid. Boundary condition matrices are formulated for both heat of ablation and generalized thermochemical ablation boundary conditions. Computed recession rates are compared to an analytical solution to demonstrate the accuracy and convergence of this approach. Additionally, the practical application of this approach to the ablation of a reentry vehicle nose tip is presented.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 10166271
- Report Number(s):
- SAND--94-1644C; AIAA--94-2085; CONF-940625--8; ON: DE94015012; BR: GB0103012
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ablation problems using a finite control volume technique
A QR accelerated volume-to-surface boundary condition for finite element solution of eddy current problems
Related Subjects
360604
99 GENERAL AND MISCELLANEOUS
990200
ABLATION
ACCURACY
ALGORITHMS
COMPARATIVE EVALUATIONS
CORROSION, EROSION, AND DEGRADATION
GRAPHITE
HEAT TRANSFER
MATHEMATICS AND COMPUTERS
MESH GENERATION
NUMERICAL SOLUTION
REENTRY VEHICLES
THEORETICAL DATA
TWO-DIMENSIONAL CALCULATIONS
USES