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水下航行体超空泡外形控制的数值研究

DOI: doi:10.3969/j.issn.1006-7043.2011.12.006

Keywords: 可变空化器, 空泡流, 变阻力, 动网格, 数值模拟??

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Abstract:

为研究非稳态条件下的航行体空泡形态随空化器阻力的变化规律,采用FLUENT6.2的动网格技术,对传统变阻力空化器的非定常空泡流进行了模拟,比较了不同中心锥角的变阻力空化器的阻力系数和空泡外形,其中阻力系数的计算结果与试验数据吻合较好;研究了传统控制方案下的空泡外形响应速度,结果显示空泡尺寸的变化要滞后于阻力系数;最后提出了一种新型的可变侧向力空化器的控制方案,模拟结果证明空化器上半周突出0.1Dn时,可以获得相当于30%阻力的升力.

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