Analysis and testing for rotordynamic coefficients of turbulent annular seals with different, directionally homogeneous surface-roughness treatment for rotor and stator elements.
A combined analytical computational method is developed to calculate the transient pressure field and dynamic coefficients for high pressure annular seal configurations which may be used in interstage and neck ring seals of multistage centrifugal pumps. The solution procedure applies to constant clearance or convergent tapered geometries which may have different (but directionally homogeneous) surface roughness treatments on the stator or rotor seal elements. It applies in particular to so called 'damper seals' which employ smooth rotors and deliberately roughened stator elements to enhance rotor stability. (from authors' abstract)
author list (cited authors)
Childs, D. W., & Kim, C. H.