Heat transfer behavior caused by temperature difference in reciprocating sliding contact

Abstract

In order to study the heat transfer characteristics between two rough surfaces of two contacting blocks with different bulk temperatures and sliding reciprocating motion, a two-dimensional heat transfer model was used to analyze the dimensionless average heat flux, considering thermal contact conductance. The results of a series simulations were presented, covering a wide range of operating parameters including dimensionless amplitude [Formula: see text], dimensionless frequency [Formula: see text], and measurements of interface conductance [Formula: see text]. The results show that the dimensionless average heat flux increases with the increase of dimensionless frequency and amplitude, and the dimensionless average heat flux rises sharply in the low range of [Formula: see text] and approaches to a steady state approximation when [Formula: see text] and [Formula: see text].

Heat and moisture transfer in fabric consisting of fibers with low hygroscopicity

“…Figure 2 illustrates that the rates of temperature increase with heating time gradually decrease from the simulation results of dry polyester and nylon fabrics. It is known that heat transfer is mainly triggered by the temperature gap, 36 and increasing the temperature gap benefits thermal transfer from a high temperature region to a low temperature region. Thus, with the increase of the temperature gap between the fabric surface and environment, the temperature of the fabric increases faster.…”

Effect of Residual Stress in Surface Layer on Plastic Yield Inception

“…When two solids come into contact, stress and deformation are produced. The characterization of the contact behavior of solids is not only highly crucial for analyzing tribological problems such as friction, wear, and lubrication [7][8][9], but also for other technological problems such as thermal and electrical contact resistance [10][11][12]. When solids with residual stress are in contact, the residual stress in the surface layer is superimposed on the stress generated by the contact, changing the critical load of yield inception and strengthening or weakening the surface layer/substrate system.…”