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Showing 1 to 7 of 7 for “"Hot gas ingestion"”.
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Mechanisms of hot gas ingestion in turbine disk cavities
In a gas turbine engine, hot gas ingestion occurs when gas from the mainstream flow path migrates into the cavities between stator and rotor disks. In order to mitigate the damage caused by these high-temperature gases, the cavities are purged with colder air from the compressor, and rim seals are …
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Computational assessment of turbine rim seal system parametric variation on hot gas ingestion and flow pattern
… rim cavity system parametric variation on hot gas ingestion, flow pattern, and turbine stage efficiency. The parameters focused on are purge to main mass flow rate ratio, axial gap to rim radius ratio, radial gap to rim radius ratio, normalized axial position of the blade leading edge, and …
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Assessment of Scaling Rule for Hot Gas Ingestion in Representative Turbine Rim Seal System for Large Industrial Gas Turbines
… carried out on the applicability of scaling the hot gas ingestion depth in terms of a non-dimensional sealing parameter for a rim seal cavity wheelspace system representative of that in an industrial gas turbine for power generation. The non-dimensional sealing parameter consists of the ratio of …
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Experimental and analytical assessment of cavity modes in a gas turbine wheelspace
… data from a high-speed 1.5-stage turbine Hot Gas Ingestion Rig shows the existence of cavity modes in the rim-seal-wheelspace cavity for representative turbine engine operating conditions with purge flow. The experimental results and observations are complemented by computational …
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Secondary air interaction with main flow in axial turbines
… the hub and shroud of axial turbines to prevent hot gas ingestion into the endwall cavities. An investigation into the interaction of purge ow with turbine main ow has been undertaken, to determine where losses are generated, how they are generated, and what are the most eective ways for reducing …
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An Investigation of Effectiveness of Normal and Angled Slot Film Cooling in a Transonic Wind Tunnel
… 0.65 and 1.3 were tested. For the normal slot, hot gas ingestion into the slot was observed at low blowing ratios (M < 0.25). At high blowing ratios (M > 0.6) the cooling film was observed to "lift off" from the surface. For the 30o angled slot, the data was found to collapse using the blowing …
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Development and application of a dispersed two-phase flow capability in a general multi-block Navier Stokes solver
Gas turbines for military applications, when operating in harsh environments like deserts often encounter unexpected operation faults. Such performance deterioration of the gas turbine decreases the mission readiness of the Air Force and simultaneously increases the maintenance costs. Some of the …