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contributor authorZhou, Wenwu
contributor authorShao, Hongyi
contributor authorZhang, Xu
contributor authorPeng, Di
contributor authorLiu, Yingzheng
contributor authorLi, Yang
contributor authorYang, Weihua
contributor authorZhao, Xiaofeng
date accessioned2023-11-29T19:48:35Z
date available2023-11-29T19:48:35Z
date copyright6/12/2023 12:00:00 AM
date issued6/12/2023 12:00:00 AM
date issued2023-06-12
identifier issn0889-504X
identifier otherturbo_145_9_091009.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4295043
description abstractPractical strategy for the thermal evaluation of film-cooled blade is of great importance to the gas turbine community. Due to the physical or methodology limitations, it is difficult to evaluate the blade’s thermal performance at simulated engine conditions. The present study proposed novel focal-sweep-based phosphor thermometry for blade cooling inspection. While Mg4FGeO6:Mn (MFG) served as the temperature sensor to quantify the blade temperatures as well as simulated the thermal barrier coating (TBC) effect, the focal sweep method was adopted to overcome the optical constraints in cascade testing. The obtained MFG results of microstructures, jet impingement, and anti-erosion test demonstrated that the MFG phosphor is robust enough to simulate the thermal insulation effect of TBC and can withstand high-speed flow erosion. Furthermore, the proposed strategy clearly captured the blade temperature distributions (mainstream at T0,∞=∼850K) with high spatial resolution, which was then successfully remapped onto the three-dimensional twisted blade. Additional comparisons with the thermocouples demonstrated that the simulated TBC has a thermal insulation effect of about 68 K. This study addressed the common problems of phosphor thermometry in blade cooling evaluation, offering a practical strategy for future thermal diagnostics of the gas turbine.
publisherThe American Society of Mechanical Engineers (ASME)
titleNovel Strategy for Thermal Evaluation of Film-Cooled Blades Using Thermographic Phosphors at Simulated Engine Conditions
typeJournal Paper
journal volume145
journal issue9
journal titleJournal of Turbomachinery
identifier doi10.1115/1.4062611
journal fristpage91009-1
journal lastpage91009-12
page12
treeJournal of Turbomachinery:;2023:;volume( 145 ):;issue: 009
contenttypeFulltext


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