@inproceedings{7c8a5ca28e29474083409625cf03c9ac,
title = "Effects of the main gas path pressure field on rim seal flows in a stationary linear cascade",
abstract = "Rim seals in the turbine section of gas turbine engines aim to reduce the amount of purge air required to prevent the ingress of hot mainstream gas into the under-platform space. A stationary, linear cascade was designed, built, and benchmarked to study the effect of the interaction between the pressure fields from an upstream vane row and downstream blade row on hot gas ingress for engine-realistic rim seal geometries. The pressure field of the downstream blade row was modeled using a bluff body designed to produce the pressure distortion of a moving blade. Sealing effectiveness data for the baseline seal indicated that there was little to no ingress with a purge rate greater than 1% of the main gas path flow. Adiabatic endwall effectiveness data downstream in the trench between the vane and blade showed a high degree of mixing. Extending the seal feature associated with the vane endwall indicated better sealing than the baseline design. Steady computational predictions were found to overpredict the sealing effectiveness due to underpredicted mixing in the trench.",
author = "Jeffrey Gibson and Karen Thole and Jesse Christophel and LCurtis Memory",
year = "2015",
month = jan,
day = "1",
doi = "10.1115/GT2015-43517",
language = "English (US)",
series = "Proceedings of the ASME Turbo Expo",
publisher = "American Society of Mechanical Engineers (ASME)",
booktitle = "Heat Transfer",
note = "ASME Turbo Expo 2015: Turbine Technical Conference and Exposition, GT 2015 ; Conference date: 15-06-2015 Through 19-06-2015",
}