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- W4317632486 abstract "Advanced additive manufacturing opens new ways to improve gas turbine fuel nozzles to enhance engine durability and performance while reducing gas emissions including NOX, CO, and Soot. Additively building complex fuel passages enables engineers to better control the fuel-air mixing and its burning, not only in gas-only but also in dual fuel engine configurations. Dual fuel engines have additional requirements for proper liquid jet trajectory and spray quality that needs to be met through the careful injector configuration within the liquid fuel cartridges. Additionally, liquid fuel cartridges in the combustor are consolidated into one cartridge with a set of discrete injectors in near proximity for cost benefits, which leads to complex multi-fuel injector designs. This can be an engineering challenge during the engine development because the traditional specifications for spray characterization (that are based on classical correlations for single jet in crossflow) don't necessarily hold true for multiple discrete jets. In addition, the flow approaching the discrete jets is not uniform in recent combustor architectures. Spray characteristic of multiple liquid jets in crossflow is very different from a single jet's behavior, primarily due to axial shadowing effects and lateral jet-to-jet interactions. This paper highlights the main differences in droplet sizes and jet trajectories based on the experiments conducted at University of Cincinnati Research Institute (UCRI), as well as comparable CFD results performed at General Electric Combustion Engineering. The shadowing effect will result in larger droplet sizes that can significantly impact the combustion performance. The fundamental physics and understanding of these interactions can help the combustor engineers to specify liquid fuel injectors that provide a suitable spray quality for flame stabilization in gas turbine engines." @default.
- W4317632486 created "2023-01-21" @default.
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- W4317632486 date "2023-01-19" @default.
- W4317632486 modified "2023-10-17" @default.
- W4317632486 title "Numerical Modeling of Multiple Liquid Jets in Crossflow for Gas Turbine Spray Characterization" @default.
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- W4317632486 doi "https://doi.org/10.2514/6.2023-1824" @default.
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