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Full-Text Articles in Engineering
Heat Transfer And Film Cooling On A Gas Turbine Blade And Shroud, Onieluan Tamunobere
Heat Transfer And Film Cooling On A Gas Turbine Blade And Shroud, Onieluan Tamunobere
LSU Doctoral Dissertations
At a fixed pressure ratio, the thermodynamic efficiency and net power output of a gas turbine engine increases with an increase in the turbine inlet temperature. Cooling is necessary because of the thermal limits of the engine materials. This research studies through experimentation, the heat transfer and cooling of critical gas turbine components including the shroud and blade tip. In the first phase, the shroud heat transfer behavior and the effectiveness of shroud cooling under the conditions of rotation is undertaken in a single stage turbine at a design rotation speed of 550 rpm, at off-design speeds and for varying …
Radiation Heat Transfer In A Particulate Medium Using A Ray Tracing Method, Manish B. Patil
Radiation Heat Transfer In A Particulate Medium Using A Ray Tracing Method, Manish B. Patil
LSU Master's Theses
In the present work, a complete 3D simulation of ray tracing model is developed for studying the radiation heat transfer, associated with laser based additive manufacturing, in both thick and thin particulate beds by using the Monte Carlo method. Additional program is developed for creating different types of packing structures such as simple cubic, rhombohydral and random packing. The scattering mechanisms in the particulate beds for large opaque spheres are evaluated using the specular and diffuse reflection methods. Further, a novel approach has been added to the model to include isotropic, forward and backward scattering mechanisms for a medium which …
Heat Transfer Study Of Porous Media With A Temperature Jump Condition, Pravin Kumar
Heat Transfer Study Of Porous Media With A Temperature Jump Condition, Pravin Kumar
LSU Master's Theses
Conjugate heat transfer in a porous media is investigated with a temperature jump condition obtained from kinetic gas theory. The temperature jump appears alongside flow boundary condition when the pressure is low, and considered to be in non-continuum regime. This investigation focuses on both one-dimensional and two-dimensional porous media models. The length scale of the pores is 100 microns. The temperature is ambient, and the pressure is low enough to reach the slip-flow regime. The thermal behavior of porous media is investigated using a slot model with a gas trapped between two solid blocks. Aluminum oxide and air are considered …