Numerical study of the effect of the leading edge shape on cavitation around inducer blade sections
Numerical study of the effect of the leading edge shape on cavitation around inducer blade sections
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DOI：
10.1299/jsmeb.45.678
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发表时间：
2001-06
期刊：
影响因子：
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通讯作者：
Olivier Coutier-Delghosa;J. Reboud;R. F. Patella
中科院分区：
文献类型：
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作者：
Olivier Coutier-Delghosa;J. Reboud;R. F. Patella
提出了模拟导流叶片截面的二维水翼空化行为的数值研究。选择两种前缘形状来实现火箭发动机导流轮设计。他们对片状空化的发展进行了测试。空化流的数值模型基于 NUMECA International 开发的 3D 代码 FINE/TURBOTM。通过使用单一流体模型考虑空化过程，该模型将液体蒸汽混合物视为均匀流体，其密度随静压而变化。数值结果与在 CREMHyG 大型空化隧道中获得的实验结果进行了比较 [Reboud 等人。 1996]。对于不同的腔体长度，测量了沿箔吸力侧和隧道壁的压力分布。沿箔吸力侧的总压力测量可以表征空化对液体流动的影响。讨论了前缘形状对空化行为的影响以及实验与数值预测之间的比较。
A numerical study of the cavitation behaviour of two-dimensional hydrofoils simulating a section of an inducer blade is presented. Two leading edge shapes were chosen to approach rocket engine inducer designs. They was tested with respect to the development of sheet cavitation. The numerical model of cavitating flows is based on the 3D code FINE/TURBOTM, developed by NUMECA International. The cavitation process is taken into account by using a single fluid model, which considers the liquid vapour mixture as a homogeneous fluid whose density varies with respect to the static pressure. Numerical results are compared with experimental ones, obtained in the CREMHyG large cavitation tunnel [Reboud et al. 1996]. Pressure distributions along the foil suction side and the tunnel walls were measured for different cavity lengths. Total pressure measurements along the foil suction side allow characterizing the effects of cavitation on the liquid flow. Influence of the leading edge shape on the cavitation behaviour and comparison between experiments and numerical predictions are discussed.