Accession Number:

ADA064659

Title:

SHTP-E, A Computer Implementation of the Finite-Difference Embedding Method of Ablation Analysis.

Descriptive Note:

Technical memo.,

Corporate Author:

JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB

Personal Author(s):

• Randall,J. D.

Report Date:

1978-05-01

Pagination or Media Count:

93.0

Abstract:

PLI procedures have been developed that use finite-difference techniques to analyze ablation problems by embedding them in inverse heat-conduction problems with no moving boundaries. The procedures form a set of subroutines that can be called from a problem-oriented main program written by the user. The procedures include provisions for one-, two-, or three-dimensional conduction, parallel modes of heat transfer, thermal contact, choices of implicit- and explicit-difference techniques, temperature-dependent and directional thermal properties, radiation relief, aerodynamic heating, chemical ablation and material removal from combinations of flat, cylindrical, and spherical surfaces. This report is meant to serve as a source of underlying theory not covered elsewhere and as a users manual for PLI procedures. Also included are useful debugging aids and external identifiers, a directory of Applied Physics Laboratory computer libraries pertaining to the PLI procedures, and an illustrative problem as an example. Author

Descriptors:

• *COMPUTER PROGRAMS
• *ABLATION
• *FINITE ELEMENT ANALYSIS
• *AERODYNAMIC HEATING
• HEAT TRANSFER
• SPHERES
• SURFACE PROPERTIES
• CYLINDRICAL BODIES
• USER NEEDS
• EMBEDDING
• INVERSION
• CONDUCTION(HEAT TRANSFER)
• DEBUGGING(COMPUTERS)
• FLAT PLATE MODELS

Subject Categories:

• Numerical Mathematics
• Computer Programming and Software
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE