本文采用SST k-ω湍流模型和Z-G-B空化模型研究前置定子导管桨的空化特性。通过对比DTMB4381螺旋桨的空化数值计算结果与实验，验证数值计算的准确性和可靠性，分析前置定子导管桨不同空化数下空化特性。结果表明，空化数大于3时水动力性能基本不变。随着空化数的继续减小，前置定子导管桨的水动力性能明显下降。空化数为4时最先在叶顶间隙靠近尾缘端出现空化，这是叶顶泄漏涡导致的空化。空化数为3.5时在叶片吸力面出现空化，随着空化减小由转子叶顶尾缘向导边和叶根扩大。
This paper using SST k-ω turbulence model and Z-G-B mass transfer cavitation model studied cavitation characteristics of ducted propeller with pre-swirl stators. From comparison of numerical results of DTMB4381 propeller with experiment, the numerical approach for cavitation was validated. Results showed that hydrodynamic characteristic nearly unaltered when cavitation number was above 3. With decreasing of the cavitation number, hydrodynamic characteristic became worse. When cavitation number was 4, cavitation pattern occurred at tip clearance of rotors near the trail, due to leakage vortex. Moreover, suction surface became cavitation when cavitation number was 3.5. With decreasing of the cavitation number, the range of cavitation pattern extended from tip to root.
2019,41(12): 20-24 收稿日期：2019-10-21
DOI：10.3404/j.issn.1672-7649.2019.12.005
分类号：U661.31;U664.33
作者简介：李生(1979-),男,工程师,主要从事船舶水动力性能研究
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