Unsteady temperature field in slabs with different kinds of time-dependent boundary conditions

Sen Yung Lee, Te Wen Tu

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

A closed solution for one-dimensional heat conduction in a slab with nonhomogenous time-dependent boundary condition at one end and homogenous boundary condition with time-dependent heat transfer coefficient at the other end is proposed. The shifting function method developed by Lee and his colleagues is used to derive the solution of the temperature distribution of the slab. By splitting the Biot function into a constant plus a function and introducing two particularly chosen shifting functions, the system is transformed into a partial differential equation with homogenous boundary conditions only. Consequently, the transformed system can be solved by a series expansion method. Two limiting cases, including time-independent boundary condition and constant heat transfer coefficient, are proved to be identical to those in the literature. Three-term approximation used in numerical examples can always result in an error <1 % in the present study, rendering the proposed methodology efficient and accurate. Finally, the influence of parameters of heat flux function or Biot function on the temperature distribution is presented.

原文English
頁(從 - 到)3597-3609
頁數13
期刊Acta Mechanica
226
發行號11
DOIs
出版狀態Published - 2015 11月 26

All Science Journal Classification (ASJC) codes

  • 計算力學
  • 機械工業

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