Impingement cooling for modern combustors: experimental analysis of heat transfer and effectiveness
| Autor: | Bruno Facchini, Marco Surace |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Fluid Flow and Transfer Processes
Work (thermodynamics) Jet (fluid) Materials science Computational Mechanics General Physics and Astronomy Reynolds number Thermodynamics Heat transfer coefficient Mechanics symbols.namesake Mechanics of Materials Heat transfer Combustor symbols Water cooling Combustion chamber |
| Zdroj: | Experiments in Fluids. 40:601-611 |
| ISSN: | 1432-1114 0723-4864 |
| Popis: | This paper presents results obtained from a wide-ranging experimental investigation into impingement cooling from multiple jet arrays which reproduced real LPP combustor liner geometries. The work was performed during the four years of the European project LOPOCOTEP. Two sparse, staggered impingement arrays were examined in detail and each case was compared with data from the literature relating to the same configuration and jet Reynolds numbers. As a result of this study, it has been possible to obtain detailed data about local distribution of the heat-transfer coefficient and spanwise row-averaged effectiveness, by using a new method which combined transient and steady-state thermochromic liquid-crystal (TLC) techniques. It was found that the data obtained in this work were in good agreement with results presented in the literature. This study shows that measured, row-by-row effectiveness values can be usefully employed in a preliminary design stage. Some data relating to hole-discharge coefficients are also presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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