| 张学伟,张亮,于开平,张嘉钟,魏英杰.通气超空泡形态稳定性的数值模拟研究[J].计算力学学报,2010,27(1):76~81 |
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| 通气超空泡形态稳定性的数值模拟研究 |
| Numerical simulation of the shape stability of ventilated supercavity |
| 投稿时间：2007-12-04 |
| DOI：10.7511/jslx20101013 |
| 中文关键词: 通气超空泡 形态稳定性 独立膨胀原理 非定常数值模拟 |
| 英文关键词:ventilated supercavity shape stability the principle of Logvinovich of the cavity sections expansion unsteady numerical simulation |
| 基金项目:高等学校学科创新引智计划(B07019);国家自然科学基金重点(10832007)资助项目. |
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| 中文摘要: |
| 根据Logvinovich空泡截面独立膨胀原理发展了一种用于计算非定常通气超空泡形态的计算方法,并运用该方法对通气超空泡形态稳定性进行了数值模拟研究。研究表明:模型速度,气体弹性,通气率,泄气率,流场压力、模型后体和空化器阻力系数都会对通气超空泡形态稳定性产生影响。不同类型和不同方式的扰动对通气空泡形态稳定性的影响不同,通气超空泡在受到扰动后表现出时间滞后性和振荡特性。 |
| 英文摘要: |
| A numerical method was brought forward to calculate unsteady ventilated supercavity based on the principle of Logvinovich of the cavity sections expansion. The shape stability of unsteady ventilated supercavity was simulated by this method. The results indicated that model velocity, gas elasticity, air-supply rate, air-leakage rate, flows pressure, model dimensions and cavitator drag coefficience can all influent the shape stability, the effects were different when the types and modes of disturbances were different. Shape fluctuation and time lag were the main characters of unsteady ventilated supercavity. |
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