| 应用DES方法模拟非定常空泡流动 |
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| 引用本文： | 赵静,张嘉钟,魏英杰. 应用DES方法模拟非定常空泡流动[J]. 哈尔滨工程大学学报, 2009, 30(1) |
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| 作者姓名： | 赵静 张嘉钟 魏英杰 |
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| 作者单位： | 哈尔滨工业大学航天学院,黑龙江哈尔滨,150001;哈尔滨工业大学航天学院,黑龙江哈尔滨,150001;哈尔滨工业大学航天学院,黑龙江哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金重点项目 |
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| 摘 要： | 在水下运动的水翼表面的局部低压区会形成空泡,而空泡具有随时间变化的非定常特性.采用DES(dettached eddy simulation)方法模拟绕水翼空泡流动的非定常特性.模拟了空泡的发生、发展、破灭、脱落的非定常过程,获得了空泡的发展、演变过程中水翼升力、阻力随时间变化的情况.模拟结果表明,空泡流动表现出明显的周期性特征;水翼的升力、阻力的周期性波动表现出同步变化的特征.将模拟结果与实验数据对比显示该方法可以准确地模拟空泡流动.
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| 关 键 词： | DES 水翼 空泡 非定常 |
Simulation of unsteady cavitating flows using the DES method |
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| ZHAO Jing,ZHANG Jia-zhong,WEI Ying-jie. Simulation of unsteady cavitating flows using the DES method[J]. Journal of Harbin Engineering University, 2009, 30(1) |
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| Authors: | ZHAO Jing ZHANG Jia-zhong WEI Ying-jie |
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| Affiliation: | School of Astronautics;Harbin Institute of Technology;Harbin 150001;China |
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| Abstract: | Cavities can easily form in the low pressure zone on the surface of a hydrofoil moving under water.Detached-eddy simulation(DES) was applied to unsteady cavitating flows over a hydrofoil.The formation,development,collapse and detachment of the cavities were simulated.Consequent variations in lift and drag on the hydrofoil were obtained.Simulation results showed that cavitating flow has significant periodic characteristics,and lift and drag on the hydrofoil vary synchronously.Comparisons with experimental da... |
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| Keywords: | DES |
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