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Full-Text Articles in Mechanical Engineering
Flow And Temperature Measurements In A Linear Turbine Blade Passage With Leading Edge And Endwall Contouring And With And Without Film Cooling, Ross James Gustafson
Flow And Temperature Measurements In A Linear Turbine Blade Passage With Leading Edge And Endwall Contouring And With And Without Film Cooling, Ross James Gustafson
LSU Master's Theses
Gas turbine efficiency can be improved by increasing the turbine inlet temperature. Secondary flows created in the turbine blade passage cause pressure losses and increase the thermal blade loading on the endwall, thus limiting the combustion temperature. Pressure losses, or aerodynamic losses, extract energy from the fluid, leaving less for torque or thrust production. Secondary flows also cause greater non-uniformity in the exit flow from each blade stage, which decreases the stage efficiency. Weakening secondary flows will lower pressure losses and endwall heat transfer. The following research will explore concepts for weakening the secondary flows through the use of (a) …
3-Dimensional Flow Measurements In Square Coaxial Jets, Thomas Lagarde
3-Dimensional Flow Measurements In Square Coaxial Jets, Thomas Lagarde
LSU Master's Theses
Results from un-forced experiments conducted in the three-dimensional flow emanating from coaxial contoured nozzles with square cross section and parallel sides are presented and discussed. Two experiments were conducted with the inner to outer jet nominal velocity ratio equal to l=0.5 and l=1.5. The Reynolds number of the outer jet based on the hydraulic diameter of the outer nozzle exit was in both cases 16,000. A multi-position hot-wire anemometry method was used for measurements in the three-dimensional turbulent flow using a dual film sensor (X-probe). A methodology was developed and implemented to derive the mean-velocity components and Reynolds stresses corrected …