Type of Document Master's Thesis Author Sedalor, Teddy Author's Email Address firstname.lastname@example.org,email@example.com URN etd-04292010-232619 Title Heat Transfer and Flow Characteristic Study in a Low Emission Annular Combustor Degree Master of Science Department Mechanical Engineering Advisory Committee
Advisor Name Title Ekkad, Srinath V. Committee Chair Tafti, Danesh K. Committee Member West, Robert L. Jr. Committee Member Keywords
- dry low emissions
- infrared thermal imaging
- combustor liner cooling
Date of Defense 2009-12-07 Availability unrestricted AbstractModern Dry Low Emissions (DLE) combustors are characterized by highly swirling and
expanding flows that makes the convective heat load on the combustor liner gas side difficult to
predict and estimate. A coupled experimental-numerical study of swirling flow and its effects on
combustor liner heat transfer inside a DLE annular combustor model is presented. A simulated
scaled up annular combustor shell was designed with a generic fuel nozzle provided by Solar
Turbines to create the swirl in the flow. The experiment was simulated with a cold flow and
heated walls. An infrared camera was used to obtain the temperature distribution along the liner
wall. Experimentally measured pressure distributions were compared with the heat transfer
results. The experiment was conducted at various Reynolds Numbers to investigate the effect on
the heat transfer peak locations and pressure distributions. A CFD study was performed using
Fluent and turbulence models and used to corroborate and verify the experimental results.
Results show that the heat transfer enhancement in the annulus has slightly different
characteristics for the concave and convex walls. Results also show a much slower drop in heat
transfer coefficient enhancement with increasing Reynolds number compared to can combustors
from a previous study. An introductory study of the effect of a soft wall on the heat transfer on
the combustor liner is also presented.
Filename Size Approximate Download Time (Hours:Minutes:Seconds)
28.8 Modem 56K Modem ISDN (64 Kb) ISDN (128 Kb) Higher-speed Access Sedalor_T_T_2009.pdf 3.48 Mb 00:16:06 00:08:16 00:07:14 00:03:37 00:00:18
If you have questions or technical problems, please Contact DLA.