Squeeze Film Dynamics of Two-Phase Seals: Part II—Turbulent Flow

Abstract

A previously developed dynamic model for two-phase face seals is extended to include turbulent flow. Thermal transients over the entire range of laminar and turbulent flow are considered for both parallel and tapered geometries. Inlet losses and choking are accounted for in the turbulent regime. Axial responses to perturbations from equilibrium are examined, and general criteria are discussed for predicting stable, unstable and bistable seal operation.

Microscale Flow Field Analysis and Flow Prediction Model Exploration of Dry Gas Seal

“…In the calculation of a rotating flow field, many studies such as [8], [9] have been limited because of the lack of theoretical models or methods to accurately determine the flow regime. However, authors in [10], [11] have studied the characteristics of the DGS rotating flow field under different flow regimes.…”