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[38364] Artykuł:

FEM Method with the use of Trefftz Functions for determination of heat transfer coefficient in a minichannel

Czasopismo: EPJ Web of Conferences   Tom: 25, Zeszyt: paper No. 02022, Strony: 1-10
ISSN:  2100-014X
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
Liczba arkuszy wydawniczych:  0.50
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału
Liczba
punktów
Magdalena Piasecka orcid logoWMiBMKatedra Mechaniki**5010.00  
Beata Maciejewska orcid logoWZiMKKatedra Informatyki i Matematyki Stosowanej**5010.00  

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 presents the FEM method for determination of boiling heat transfer coefficient in cooling liquid flow in a rectangular minichannel with asymmetric heating. Experimental research has focused on the transition from single phase forced convection to nucleate boiling, i.e. the zone of boiling incipience. The "boiling front" location has been determined from the temperature distribution of the heated wall obtained from liquid crystal thermography. The main part of the test section has been a minichannel of pre-set depth from 0.7 to 2.0 mm, of different spatial orientations. Local values of heat transfer coefficient have been determined following the solution of the two-dimensional inverse heat transfer problem. This problem has been solved with the use of Trefftz functions. Trefftz functions have been used to construct base functions in the finite element method (FEMT).