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contributor authorMonge-Concepción, Iván
contributor authorBarringer, Michael D.
contributor authorBerdanier, Reid A.
contributor authorThole, Karen A.
contributor authorRobak, Christopher
date accessioned2023-08-16T18:08:18Z
date available2023-08-16T18:08:18Z
date copyright10/7/2022 12:00:00 AM
date issued2022
identifier issn0889-504X
identifier otherturbo_145_1_011006.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4291485
description abstractOverlapping features are commonly used as rim seals between stationary and rotating components in a turbine stage. These rim seals are used to prevent main gas path ingestion to the wheelspace cavity, which reduces the lifespan of critical engine components such as the turbine disk. In addition to the overlapping features, purge flow, diverted from the compressor, is injected into the rim cavity to act as an airflow sealing mechanism. Previous research identified that in addition to the purge flow in the rim cavity, cooling flow from the vane trailing edge (VTE) is ingested into the rim seal cavity carrying the potential to cool components in the wheelspace. These previous findings, however, were not able to distinctly separate purge from VTE cooling flows, which is the contribution of this paper based on uniquely using two different tracer gases. A one-stage test turbine operating at engine-relevant conditions and consisting of real engine hardware was used to validate and quantify the ingestion of the VTE flow by independently seeding the purge and VTE flows with two different tracer gases. Experimental results show the presence of VTE flow in the rim seal throughout all purge flowrates evaluated. Circumferential variation of VTE flow was also studied both experimentally and computationally using a computational fluid dynamics model. Results showed that ingested VTE flow can reduce the detrimental effect of hot gas ingestion particularly at higher purge flowrates.
publisherThe American Society of Mechanical Engineers (ASME)
titleUse of Multiple Tracer Gases to Quantify Vane Trailing Edge Flow Into Turbine Rim Seals
typeJournal Paper
journal volume145
journal issue1
journal titleJournal of Turbomachinery
identifier doi10.1115/1.4055445
journal fristpage11006-1
journal lastpage11006-11
page11
treeJournal of Turbomachinery:;2022:;volume( 145 ):;issue: 001
contenttypeFulltext


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