Dimensional analysis on resistance characteristics of labyrinth seals

Experimental Research and CFD Calculations Based Investigations Into Gas Flow in a Short Segment of a Heavily Worn Straight Through Labyrinth Seal

“…The static pressure distribution obtained for the examined straight through labyrinth seal significantly differs from those observed for segments with smaller gap heights -HG = 0.2 -1 mm [5,6]. The presented measurement data and the CFX simulations (Figs.…”

“…In the experimental research, absolute pressure converters with the measurement range of 0-5·10 5 Pa and the measurement accuracy of ±0.25%. were used.…”

“…were used. Moreover, pressure difference converters with the measurement range of 0-025·10 5 Pa and the measurement accuracy of ±0.2% were applied. The temperature was measured using T-thermocouples.…”

“…Among other issues, these works examined experimentally the influence of the leakages on the mixing loss and secondary flows. A segment of a four-slot one-sided seal was the subject of the research described in [5]. The experimental research and numerical calculations performed in this work were related to the energy loss due to flow turbulence, described using the friction loss.…”

Theoretical and experimental investigation on maximum pressure loads of labyrinth seal’s teeth

“…Other researches 19,20 also indicated that the maximum pressure load occurred on the first tooth, but they offered a different explanation which is applicable to high pressure ratio and compressible flows. Their explanation goes like this: the first tooth has a high flow contraction because there is no upstream ''carryover'' effect.…”