Open AccessHEAT EXCHANGE IN THE AREA OF SURFACE CONTACT WITH SHAPE DEVIATIONS
Author(s) -
V. M. Popov,
O. R. Dornyak,
Andrei Latinin,
Е. Л. Лушникова
Publication year - 2021
Publication title -
voronežskij naučno-tehničeskij vestnik
Language(s) - English
Resource type - Journals
ISSN - 2311-8873
DOI - 10.34220/2311-8873-2021-4-4-64-69
Subject(s) - flatness (cosmology) , thermal contact conductance , thermal contact , contact process (mathematics) , thermal , contact resistance , heat transfer , materials science , mechanics , surface (topology) , heat exchanger , flat surface , contact area , thermal resistance , mechanical engineering , composite material , thermodynamics , mathematics , physics , engineering , statistical physics , geometry , cosmology , layer (electronics) , quantum mechanics
The article discusses a thermal model of the heat transfer process in a composite system with contacting metal surfaces with macrodeviations in the form of bulges. It is shown that the previously developed methods for calculating contact thermal resistances are suitable only for contact pairs with flat-rough surfaces. For the considered contact pairs, when deriving analytical dependences, it is necessary to take into account the effect of equivalent non-flatness, the presence of which significantly increases the contact thermal resistance, which requires taking into account the influence of deviations in the shape of the contact surfaces in the process of designing heat-stressed systems.