Solving of Two-Dimensional Unsteady Inverse Heat Conduction Problems Based on Boundary Element Method and Sequential Function Specification Method

The boundary element method (BEM) and sequential function specification method (SFSM) are used to research the inverse problem of boundary heat flux identification in the two-dimensional heat conduction system. The future time step in the SFSM is optimized by introducing the residual error principle...

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Vydané v:Complexity (New York, N.Y.) Ročník 2018; číslo 2018; s. 1 - 11
Hlavní autori: Wang, Shoubin, Sun, Xiaogang, Deng, Yuanzheng
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Cairo, Egypt Hindawi Publishing Corporation 01.01.2018
Hindawi
John Wiley & Sons, Inc
Wiley
Predmet:
Aerospace engineering
Algorithms
Boundary element method
Computational physics
Conduction heating
Conductive heat transfer
Error analysis
Finite element analysis
Function specification method
Geometry
Heat conductivity
Heat flux
Identification
Integral equations
Inverse problems
Mathematical analysis
Nondestructive testing
Position measurement
Regularization methods
Science
Specifications
Temperature
ISSN:1076-2787, 1099-0526
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Shrnutí:The boundary element method (BEM) and sequential function specification method (SFSM) are used to research the inverse problem of boundary heat flux identification in the two-dimensional heat conduction system. The future time step in the SFSM is optimized by introducing the residual error principles to get the more accurate inversion results. For the forward problems, the BEM is used to calculate the required temperature value of discrete point; for the inverse problems, the impacts of different future time steps, measuring point position, and measuring error on the inversion results are discussed. Furthermore, the comparison is made for the optimal future time step obtained by introducing the residual error principle and the inherent future time step. The example analysis shows that the method proposed still has higher accuracy when the measuring error exists or the measuring point position is far away from the boundary heat flux.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 14
ISSN:1076-2787
1099-0526
DOI:10.1155/2018/6741632