| 罗茨鼓风机内部气流脉动的非定常数值分析 |
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| 引用本文： | 刘正先,徐莲环,赵学录.罗茨鼓风机内部气流脉动的非定常数值分析[J].航空动力学报,2007,22(3):400-405. |
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| 作者姓名： | 刘正先 徐莲环 赵学录 |
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| 作者单位： | 天津大学,力学系,天津,300072;天津大学,力学系,天津,300072;天津市鼓风机总厂,天津,300222 |
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| 摘 要： | 运用计算流体动力学方法对渐开线三叶罗茨鼓风机排气过程中的脉动进行了可压缩非定常流动的数值模拟, 在动静耦合区域采用了非一致网格界面, 用动网格方法实现了排气区域流场的容积变化, 通过将数值模拟结果与半经验理论公式计算结果的对比分析, 探讨了运转周期内气流脉动的分布特性和对排气流量的影响.
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| 关 键 词： | 航空、航天推进系统 罗茨鼓风机 数值模拟 动网格 排气流量 脉动 |
| 文章编号： | 1000-8055(2007)03-0400-06 |
| 收稿时间： | 2006/9/25 0:00:00 |
| 修稿时间： | 2006年9月25日 |
Unsteady numerical simulation and analysis of the flow fluctuation in the Roots blower |
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| LIU Zheng-xian,XU Lian-huan and ZHAO Xue-lu.Unsteady numerical simulation and analysis of the flow fluctuation in the Roots blower[J].Journal of Aerospace Power,2007,22(3):400-405. |
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| Authors: | LIU Zheng-xian XU Lian-huan and ZHAO Xue-lu |
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| Institution: | 1.The Depart.of Mechanics of Tianjin University, Tianjin 300072, China2.The Blower Factory of Tianjin, Tianjin 300222, China |
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| Abstract: | The pulsation in the exhaust process of three-lobe involute type Roots blower was simulated in CFD method under the compressible、unsteady condition. To achieve the change of exhaust area that dynamic mesh updating method and multiple reference frame at rotor-stator coupled area were adopted.The result of numerical simulation was contrasted with computing result of the semi-experience theory formula.It was discussed that the characteristic of air flow fluctuation in a period and influence to the exhaust flux. |
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| Keywords: | aerospace propulsion system Roots blower numerical simulation dynamic mesh exhaust flux fluctuation |
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