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Full-Text Articles in Structures and Materials
Numerical Studies Of Transition For Flows Around Multi-Element Airfoils, Fengjun Liu
Numerical Studies Of Transition For Flows Around Multi-Element Airfoils, Fengjun Liu
Dissertations
The transition of flows around a multi-element airfoil has been numerically studied using RANS with a k - e two-equation transition model, LST and DNS. The transition model uses an effective eddy-viscosity by coupling an intermittence-like correction to a turbulence eddy-viscosity that can be obtained via solving a parent k - e turbulence model. The transition model is truly predictive in that it is able to predict transition onset locations without having to specify prior knowledge of the targeted transition process. The predicted transition onset locations for all the cases studied were compared with the measured data. The results suggest …
The Pratt & Whitney 4060: Power For The Future, Gregory Sumner
The Pratt & Whitney 4060: Power For The Future, Gregory Sumner
Honors Theses
The Pratt & Whitney 4000 engine platform is considered the most economical turbofan engine in its class. It is advertised as providing the most efficient service and the most reliability for air carriers. United Airlines utilizes the company's engines. The paper begins with basic turbine engine theory and moves on to engine classifications, where the Pratt & Whitney 4060 is introduced. The systems are covered in detail. Maintenance areas of service and inspections are described to show how personnel may interact with the computers. Finally, a description of activities during the author's internship describe the interesting facets of a semester …