This paper investigates the effect of inserting a ring type barrier on leakage flow of brush seals with different bristles clearances (the distance between bristle pack tip and rotor surface). The ring is placed on both upstream and downstream sides of the bristles. An axisymmetric CFD model is employed to calculate radial pressure distribution along backing plate, axial pressure variation on r...

A numerical analysis of deformation the brush seal wire package as part dynamic rotor&stator system gas turbine engines is describes. The estimated definition reaction force based on solving contact problem interaction bristles with each other, rotor and rear plate case, taking into account action distributed flow pressure. Comparison results obtained data well-known experimental studies. A...

Brush seals can improve engine performance by reducing leakage. Wear models of brush provide methods to predict wear and However, rotor eccentricity, radial deformation, hysteresis effect bristles are not considered systematically in the existing models, which may lead large errors some cases. To investigate influence rotor-stator eccentricity deformation on process leakage seal, a seal test wa...

Carbon has been used as a face material in mechanical seals for well over fifty years. The first grades of carbon used were developed from carbon electrical brush materials, but the continuous increase in the severity of mechanical seal operating conditions has necessitated ever improving grades of carbon. This paper details some of the means available to the carbon technologist to achieve thes...

In order to improve efficiency in turbomachinery, brush seal replaces labyrinth seals widely the secondary air system. A 2-d staggered tube bank model is adopted simulate gas states and pressure character seal, computational fluid dynamics (CFD) used solve this paper. According simulation results, corrected formula of Euler number dimensionless are given. The results show that expands when flow...