A review on the effects of different parameters on contact heat transfer
- Authors: Abdollahi H.1, Shahraki S.1, Motahari-Nezhad M.2
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Affiliations:
- University of Zabol
- Iran University of Science and Technology
- Issue: Vol 24, No 4 (2017)
- Pages: 499-512
- Section: Article
- URL: https://journals.rcsi.science/1531-8699/article/view/217002
- DOI: https://doi.org/10.1134/S0869864317040011
- ID: 217002
Cite item
Abstract
In this paper, a complete literature review for thermal contact between fixed and periodic contacting surfaces and also thermal contact between exhaust valve and its seat in internal combustion engines is presented. Furthermore, the effects of some parameters such as contact pressure, contact frequency, the contacting surfaces topography and roughness, curvature radius of surfaces, loading–unloading cycles, gas gap conductance and properties, interface interstitial material properties, surfaces coatings and surfaces temperature on thermal contact conductance are investigated according to the papers presented in this field. The reviewed papers and studies included theoretical/ analytical/experimental and numerical studies on thermal contact conductance. In studying the thermal contact between exhaust valve and its seat, most of the experimental studies include two axial rods as the exhaust valve, and seat and the one ends of both rods are considered at constant and different temperatures. In the experimental methods, the temperatures of multi-points on rods are measured in different conditions, and thermal contact conductance is estimated using them.
About the authors
H. Abdollahi
University of Zabol
Email: saeid.shahraki@uoz.ac.ir
Iran, Islamic Republic of, Zabol
S. Shahraki
University of Zabol
Author for correspondence.
Email: saeid.shahraki@uoz.ac.ir
Iran, Islamic Republic of, Zabol
M. Motahari-Nezhad
Iran University of Science and Technology
Email: saeid.shahraki@uoz.ac.ir
Iran, Islamic Republic of, Tehran