Date of Award
3-2022
Document Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Department of Aeronautics and Astronautics
First Advisor
James L. Rutledge, PhD
Abstract
Higher performance requirements and reduced core sizes are driving increases in turbine inlet temperature in gas turbine engines, surpassing the melting point of advanced materials. Newer materials, such as composites, are being introduced into the hot sections of gas turbine engines. Components in the hot section use film cooling to prevent melting. One unique aspect of some high-temperature composites is they have a bulk anisotropic thermal conductivity, therefore heat flow differs relative to traditional metallic components. Film cooling designs can be revolutionized by leveraging anisotropy in high-temperature materials. The purpose of this research is to examine thermal considerations for using materials with anisotropic thermal conductivity in film cooling designs. Results show that leveraging anisotropy in film cooling designs can improve cooling effectiveness without changing any other aspect of the cooling architecture. The research also identifies ideal laboratory conditions and materials for well-scaled, film cooled experiments using isotropic and anisotropic material.
AFIT Designator
AFIT-ENY-DS-22-M-281
Recommended Citation
Bryant, Carol E., "Thermal Considerations for Film Cooling Materials With Anisotropic Thermal Conductivity" (2022). Theses and Dissertations. 5674.
https://scholar.afit.edu/etd/5674