Mathematical Modeling of the Thermal Regime of Lip Seal

Abstract

In this article, on the basis of mathematical modeling, simplified models of the thermal process of the lip seal are presented. Comparison of the computational results revealed that for the model, taking into account the reciprocating motion of the rod (the “with moving source” model), the simplified model with a fixed uniform distribution of the heat flux taking into account convective heat transfer from the free friction surface is the closest model - the “to lack” heat source. It is established that the traditionally used simplified model with a fixed uniform distribution of the heat flux, which does not take into account convective heat transfer from the friction surface (the “with excess” model), deviates over time from the “with moving source” model. Methods are proposed for determining the oscillation frequencies of the rod at which the simplified model describes the temperature field in the seal with suitable accuracy for practical use.