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[22665] Artykuł:

The use of Trefftz functions for approximation of measurement data in an inverse problem of flow boiling in a minichannel

Czasopismo: The European Physical Journal Web of Conferences   Tom: 25
ISSN:  2100--014
Wydawca:  E D P SCIENCES, 17 AVE DU HOGGAR PARC D ACTIVITES COUTABOEUF BP 112, F-91944 CEDEX A, FRANCE
Opublikowano: 2012
Seria wydawnicza:  EPJ Web of Conferences
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału
Liczba
punktów
Sylwia Hożejowska orcid logoWZiMKKatedra Informatyki i Matematyki Stosowanej**808.00  
Leszek Hożejowski orcid logoWZiMKKatedra Informatyki i Matematyki Stosowanej**202.00  

Grupa MNiSW:  Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science)
Punkty MNiSW: 10
Klasyfikacja Web of Science: Proceedings Paper


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Abstract:

The paper is devoted to a computational problem of predicting a local heat transfer coefficient from experimental temperature data. The experimental part refers to boiling flow of a refrigerant in a minichannel. Heat is dissipated from heating alloy to the flowing liquid due to forced convection. The mathematical model of the problem consists of the governing Poisson equation and the proper boundary conditions. For accurate results it is required to smooth the measurements which was obtained by using Trefftz functions. The measurements were approximated with a linear combination of Trefftz functions. Due to the computational procedure in which the measurement errors are known, it was possible to smooth the data and also to reduce the residuals of approximation on the boundaries.