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Fast three-dimensional temperature reconstruction. (English) Zbl 1225.80008
Summary: The work presented here deals with the reconstruction of the thermal field inside a three-dimensional structure when only some pointwise temperature measurements along a time interval $$[0, T]$$ are available. The model-based reconstruction procedure builds upon optimal control theory applied to the determination of the unknown boundary conditions. The proposed dual approach enables one to reduce the on-line computational cost so that the resulting algorithm can be part of a real-time process. The complexity of the resulting algorithm does not depend on geometry. The paper details a novel methodology that enables to implement the reconstruction procedure using standard finite element tools, despite the difficulty to define the pointwise values of a three-dimensional field in the usual functional spaces where finite element methods converge.

##### MSC:
 80A23 Inverse problems in thermodynamics and heat transfer 80A20 Heat and mass transfer, heat flow (MSC2010)
Matlab
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##### References:
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