Issue |
La Houille Blanche
Number 3, Avril 1969
|
|
---|---|---|
Page(s) | 253 - 258 | |
DOI | https://doi.org/10.1051/lhb/1969020 | |
Published online | 23 March 2010 |
Diffusion turbulente dans le sillage d'un fil
Ingénieur à la Direction des Etudes et Recherches, E.D.F.,
Chatou.
The turbulent heat transfer process involved in the simple case of heat diffusion in the wake of a hot wire stretched diametrically across a tube cross-section is investigated for flow Reynolds numbers of 270,000 and 560,000. The resistance thermometer specially designed for the purpose had a 4 m dia. X 0.5 millimetre long platinum wire for its sensitive element and was capable of measuring temperature differences to within 1/200 °C. The notion of a turbulent heat diffusivity coefficient is discussed in the light of the results obtained and is found to show the general properties of turbulent flow as it cannot be related to the local flow characteristics.
© Société Hydrotechnique de France, 1969
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.