Transient thermal multiscale analysis for rocket motor case: Mechanical homogenization approach

Ronen Haymes, Erez Gal

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

This paper describes a mechanical homogenization approach to the application of a multiscale formulation for a transient heat transfer problem. The presented formulation evaluates the effective macroscopic thermal properties of composite materials and, by scaling down to the microscale level, provides the microscopic heat flux field by solving elastic problems at the microscopic scale (unit cell). This novel method has the advantage of applying periodic boundary conditions and a uniform macroscopic temperature gradient over the unit cell, which is not easy and often not practical to achieve with heat transfer computation software. The proposed multiscale analysis is verified by various examples of composite materials, and its efficiency is demonstrated on a large-scale problem involving a solid rocket motor.

Original languageEnglish
Pages (from-to)324-336
Number of pages13
JournalJournal of Thermophysics and Heat Transfer
Volume31
Issue number2
DOIs
StatePublished - 1 Jan 2017

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes
  • Space and Planetary Science

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