A Comprehensive Analysis Algorithm for Ablation, Temperature Fields and Thermal Stresses of the Carbon-Base Nosetips,

Abstract

In this paper, the principles of the synthetic analysis and treatment techniques concerning vehicle re-entry thermal environment, ablation, heat transfer and thermal stresses are described. The thermochemical ablation calculations for chemical reactions on the ablating surfaces of carbon-base materials are simplified using selective calculation results. The temperature fields are calculated using the three-level explicit difference schemes for both constant and non-constant space steps within the total region. The thermal stresses are calculated, based on the incomplete generalized potential energy variational principles under the supposed conditions of linear elasticity, using the finite element method. This method can also be usd to calculate the effects of the various displacement boundary conditions. An automatic grid generation technique has been developed during the computer code editing, which helps improve the shape selection calculations.

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Document Details

Document Type
Technical Report
Publication Date
Feb 24, 1986
Accession Number
ADA166615

Entities

People

  • Zhen Zhong Huang

Organizations

  • National Air and Space Intelligence Center

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Chemical Reactions
  • Coordinate Systems
  • Difference Equations
  • Differential Equations
  • Elastic Properties
  • Energy
  • Equations
  • Finite Element Analysis
  • Grids
  • Heat Flux
  • Heat Transfer
  • Materials
  • Mechanics
  • Numerical Analysis
  • Thermal Stresses

Fields of Study

  • Engineering

Readers

  • Calculus or Mathematical Analysis
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Thermal Physics or Thermal Science.

Technology Areas

  • Space