| 引用本文: | 赵嘉琛,韩东,于雷.射流主动流动控制对舰船甲板流场的影响[J].哈尔滨工业大学学报,2023,55(4):26.DOI:10.11918/202201050 |
| ZHAO Jiachen,HAN Dong,YU Lei.Active flow control of ship deck coupled flow field based on jet flow[J].Journal of Harbin Institute of Technology,2023,55(4):26.DOI:10.11918/202201050 |
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| 摘要: |
| 随着舰船的发展和大量应用,舰船甲板流场的分析与控制的重要性进一步凸显出来。为改善舰船甲板流场,提出了一种新型的基于射流装置的主动流动控制方法,并以直升机桨盘位置为例分析了不同射流装置参数对于直升机桨盘流场优化的效果。首先基于Navier-Stokes方程建立了舰载直升机甲板流场的数值模型,以研究基于射流主动流动控制对舰船甲板流场的影响。然后该方法选取k-ε湍流模型,并通过算例验证了方法的有效性。最后模拟得到添加射流装置的舰船甲板流场流线与速度分布,结合流场信息对旋翼受力的影响对比分析了加装射流装置对舰船甲板流场的流动控制作用。结果表明:上射流的添加可以使得甲板流场中回流区的影响范围减小,从而使得桨盘流场速度梯度减小;桨盘流场速度梯度的减小可以有效降低旋翼气动力变化和响应水平;不同的来流角下添加上射流装置均能通过控制甲板流场从而减小响应,提高直升机的安全性。射流速度对流场控制效果影响显著,应结合射流装置安装位置选取最优射流速度从而达到较好的控制效果。 |
| 关键词: 舰载直升机 甲板流场 数值模拟 射流 主动流动控制 |
| DOI：10.11918/202201050 |
| 分类号:V211.3 |
| 文献标识码:A |
| 基金项目:国家自然科学基金面上项目(11972181)；旋翼空气动力学重点实验室开放基金(2005RAL20200104)；江苏省第十五批“六大人才高峰”高层次人才项目(GDZB-013)；江苏高校优势学科建设工程资助项目(PAPD) |
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| Active flow control of ship deck coupled flow field based on jet flow |
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ZHAO Jiachen1,HAN Dong1,YU Lei2
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(1.National Key Laboratory of Rotorcraft Aeromechanics (Nanjing University of Aeronautics and Astronautics), Nanjing 210016, China; 2.School of Aeronautics and Astronautics, Sun Yat-Sen University, Guangzhou 510006, China)
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| Abstract: |
| The rapid development and extensive application of ships highlight the vital role of the analysis and control of ship deck flow field. To improve the flow field of ship deck, a novel active flow control method based on jet is proposed, and by taking the position of helicopter rotor disk as an example, the effect of different jet device parameters on the optimization of helicopter rotor disk flow field is analyzed. First, the numerical simulation model of the flow field of the ship deck was established to examine the influence of active flow control on the ship deck flow field based on the Navier-Stokes equation. Then, the k-ε turbulence model was chosen and the effectiveness of the method was validated. Finally, the streamline and velocity distribution of ship deck flow field with jet device were simulated. Combined with the influence of flow field information on rotor force, the flow control effect of jet device on ship deck flow field was compared and analyzed. The results show that the addition of upper jet can reduce the influence range of reflux zone in the deck flow field and the velocity gradient of rotor disk flow field accordingly. The reduction of the velocity gradient of the rotor disk flow field tends to effectively reduce the aerodynamic variation and the response of the rotor. Adding jet devices under different inflow angles may reduce the response and improve the safety of the helicopter by controlling the deck flow field. As the jet velocity exerts a significant influence on the flow field control effect, the optimal jet velocity should be selected with reference to the installation position of the jet device to achieve better control effect. |
| Key words: shipboard helicopter flow field of deck numerical simulation jet flow active flow control |
