NACA0012二维翼型空化流动控制研究  

Study on cavitation flow control of two-dimensional airfoil NACA0012

作　　者：王维军 WANG Weijun(AVIC Chengdu Caic Electronics Co.,Ltd.,Chengdu 610091,China)

机构地区：[1]航空工业成都凯天电子股份有限公司,四川成都610091

出　　处：《武汉大学学报（工学版）》2022年第5期525-530,共6页Engineering Journal of Wuhan University

基　　金：流体机械及工程四川省重点实验室(西华大学)开放课题项目(编号:szjj2019-029);航空工业成都凯天电子股份有限公司预研项目(编号:Y2049,Y2050)。

摘　　要：为了研究缝隙引射流技术对翼型空化的影响,建立了NACA0012二维翼型求解模型,基于Singhal、SS(Schnerr-Sauer)、ZGB(Zwart-Gerber-Belamri) 3种不同空化模型进行数值仿真,对其头部靠近前缘的位置设置了宽度为10 mm、与来流方向呈锐角的缝隙。结果表明,Singhal与SS空化模型求解精度相对较差,SS空化模型预测的空化最为严重,与实际不符;在小空化数流动中,翼型头部开缝有助于抑制空化的发生,引入高压流体到吸力面可以改善空化流动,流线紧贴翼型表面,未发生流动分离;在大空化流动中,开缝的翼型空化流动复杂,高压流体无法对空泡进行有效约束。该方法对控制翼型空化发展有较显著的作用,抑制了NACA0012二维翼型尾缘位置处的反向漩涡。In order to study the effect of slot jet technology on airfoil cavitation, a two-dimensional NACA0012 airfoil solution model was established. Based on three different cavitation models, Singhal, SS(Schnerr-Sauer)and ZGB(Zwart-Gerber-Belamri), a slot with a width of 10 mm and an acute angle with the incoming flow direction was set at the position near the leading edge. The results show that the accuracies of Singhal and ZGB cavitation models are relatively poor, and the cavitation predicted by the ZGB cavitation model is the most serious, which is inconsistent with the actual situation. In the small cavitation number flow, the slotting at the airfoil head is helpful to restrain the cavitation. By introducing high pressure fluid to the suction surface, the cavitation flow can be improved. The streamline is close to the surface of the airfoil without flow separation. In the large cavitation number flow, the cavitation flow of slotted airfoil is complex, and the high pressure fluid cannot effectively restrain the cavitation. This method has a significant effect on controlling the development of airfoil cavitation and suppressing the reverse vortex at the trailing edge of NACA0012 two-dimensional airfoil.

关 键 词：翼型 空化模型 吸力面 压力面 

分 类 号：TK72[动力工程及工程热物理—流体机械及工程]