Inverse analysis for transient thermal load identification and application to aerodynamic heating on atmospheric reentry capsule

Toshiya Nakamura, Yukihiro Kamimura, Hirotaka Igawa, Yoshiki Morino

    Research output: Contribution to journalArticle

    25 Citations (Scopus)

    Abstract

    A transient inverse heat conduction analysis enables the identification of the unknown boundary heat flux from finite number of temperature data obtained, e.g., in the high temperature structural tests or in the actual operation. Since the prediction of thermal load (heat flux) is difficult, the inverse analysis is expected to improve structural design of high temperature components. The present study develops a computational method of transient inverse heat conduction analysis. The developed code is applied to problems of a simple two-dimensional plate and of an atmospheric reentry capsule. Sequential Function Specification (SFS) method and Truncated Singular Value Decomposition (TSVD) are employed to improve the stability of the inverse analysis. Effects of these regularization methods are numerically discussed.

    Original languageEnglish
    Pages (from-to)48-55
    Number of pages8
    JournalAerospace Science and Technology
    Volume38
    DOIs
    Publication statusPublished - 2014

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    Keywords

    • Pseudo-inverse matrix
    • Reentry capsule
    • Sequential function specification
    • Transient inverse heat conduction analysis
    • Truncated singular value decomposition

    ASJC Scopus subject areas

    • Aerospace Engineering

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