Natural convection from flat side's of coil system

Payam Shams Ghahfarokhi, Ants Kallaste, Toomas Vaimann, Anouar Belahcen

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

3 Citations (Scopus)


This paper presents a thermal study to determine the convective heat transfer coefficient over the flat side of a permanent magnet synchronous generator coil in horizontal and vertical directions by using the empirical correlations. To validate the results, an experimental setup is developed for both horizontal and vertical orientations and different input currents. The experimental results are compared with the analytical method, based on correlations proposed in the literature. The results show that the analytical calculation based on empirical correlation for the horizontal case and Mac Adams as well as Churchill I correlations for the vertical case have a good agreement with the experimental data.

Original languageEnglish
Title of host publicationProceedings of the 19th International Scientific Conference on Electric Power Engineering, EPE 2018
Number of pages5
ISBN (Electronic)9781538646113
Publication statusPublished - 25 Jun 2018
MoE publication typeA4 Article in a conference publication
EventInternational Scientific Conference Electric Power Engineering - Brno, Czech Republic
Duration: 16 May 201818 May 2018
Conference number: 19

Publication series

NameInternational scientific conference electric power engineering
ISSN (Electronic)2376-5631


ConferenceInternational Scientific Conference Electric Power Engineering
Abbreviated titleEPE
CountryCzech Republic


  • Empirical correlation
  • Flat plat
  • Heat transfer
  • Natural convection


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