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<p>A gas turbine test facility air system has been designed to meet specified design objectives. An analytical evaluation was performed on the air system design to verify that these design objectives were achieved. A key element of the air system is an exhaust eductor which was included in the design to provide secondary cooling air flow through the engine test cell. Two analytical models were developed to evaluate exhaust eductor performance. A one-dimensional, incompressible eductor model was developed that predicts the basic eductor performance parameters including the amount of secondary air flow drawn through the engine test cell for varying eductor configurations. This model also predicts overall air system performance parameters. An eductor computational fluid dynamics analytical model was developed that provides a more detailed analysis of the flow in the eductor.
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Phelps, David D.</div>
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