頁籤選單縮合
題名 | Multi-Objective Optimization of Atomization Characteristics Based on Geometric Features of Pressure Swirl Nozzle |
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作者姓名(外文) | Zhang, Bin; Pang, Yanshuai; Yang, Peijie; Xie, Mingyun; Wu, Shengqi; | 書刊名 | Journal of Aeronautics, Astronautics and Aviation. Series A |
卷期 | 56:1 2024.03[民113.03] |
頁次 | 頁19-34 |
分類號 | 447.6 |
關鍵詞 | Pressure swirl nozzles; Multi-objective optimization; Atomization characteristics; 2D simplification; Dimensionless single-factor analyses; Halton sequence; |
語文 | 英文(English) |
DOI引用網址 | 10.6125/JoAAA.202403_56(1).03 |
英文摘要 | Pressure swirl nozzles could fragment fuel into fine droplets, with geometry significantly affecting atomization quality. Due to the conflicting characteristics associated with atomization, optimizing geometric features is complex. This study introduces a 2D simplified nozzle model to mitigate the high simulation costs of large-scale sampling due to high dimension. Based on this type of model, six single-factor geometry analyses and Gaussian Process Regression (GPR) models that link nozzle geometric features to atomization characteristics were completed. The subsequent multi-objective optimization method identified four optimal configurations based on liquid film thickness (𝑡𝑜), spray cone half-angle (𝜃), flow coefficient (𝐶𝑑), and a composite optimum. Adjustments in geometric parameters, especially with a critical ratio of 𝐷𝑠 𝑑𝑜 = 2.62, can notably improve atomization. This ratio could indicate a balanced state between flow stability and losses. Furthermore, the composite optimized nozzle could reduce 𝑡𝑜 by 21% and increase 𝜃 by 17% without reducing 𝐶𝑑 . oozzles with smaller aspect ratios typically exhibit larger 𝜃 and thinner 𝑡𝑜, while those with larger aspect ratios have a higher 𝐶𝑑. |
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