Development of an Active Grid Adapted to a Low-Swirl Burner and Measurements of Turbulent Properties of the Flow Field
| Autor: | Inkyu Jeon, Shigeru Tachibana, Laurent Zimmer, Akira Nishizawa |
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| Přispěvatelé: | Japan Aerospace Exploration Agency [Tokyo] (JAXA), Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion (EM2C), CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université Paris Saclay (COmUE), Zimmer, Laurent |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Japan Aerospace Exploration Agency, pp.29, 2006 HAL |
| Popis: | The aim of this research is to design a bi-plane active grid to enhance turbulent flow downstream of a low- swirl burner. The active grid is a variation of the original form devised by Makita in 1991. First, adequate ranges for experimental parameters are sought using non-reacting flow. While turbulent intensity is of major interest, homogeneity, isotropy, and integral scale near the nozzle exit are also analyzed by measuring mean and turbu- lent velocities. In addition, a fully developed inertial subrange is demonstrated by energy spectra analysis. When premixed reacting flow is tested, a turbulent Karlovitz number higher than unity is achieved under vari- ous conditions. It indicates that the flame produced is in the thin reaction zone regime on the Peters' diagram. The measurements are implemented using both hot-wire anemometry and particle image velocimetry. |
| Databáze: | OpenAIRE |
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