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基于螺旋桨叶素理论,采用雷诺相似和等离子体诱导射流相似,在低湍流度风洞中,模拟了临近空间螺旋桨不同叶素在不同来流速度和转速下的工作情况,研究了脉冲式和连续式2种表面介质阻挡放电模式下的等离子体控制流动效果。结果表明,等离子体可以起到明显的螺旋桨增效作用,在桨叶中部r/R=0.5~0.85范围内增效作用较强。脉冲激励模式比连续模式增效能力更强,尤其是转速增大到一定程度后,连续模式产生了负增效作用,而脉冲激励模式一直产生正增效效果,螺旋桨拉力最大可提高10%左右。在所研究的脉冲频率范围内,改变脉冲频率,对增效能力的影响较小。
Based on the theory of propeller blade, the Rayleigh similarity is similar to that of plasma-induced jet. In a low-turbulence wind tunnel, the simulation of the action of different elements in adjacent space propeller at different flow velocities and speeds is studied. The effects of pulsed and continuous Plasma flow control in two types of surface dielectric barrier discharge mode. The results show that the plasma can play a significant propeller synergistic effect, and the synergistic effect is stronger in the range of r / R = 0.5 ~ 0.85 in the middle of the blade. The pulse excitation mode has more synergistic effect than the continuous mode. Especially when the rotational speed increases to a certain extent, the continuous mode produces a negative synergistic effect, while the pulse excitation mode has a positive synergistic effect. The maximum force of the propeller can be increased by about 10% . Changing the pulse frequency within the investigated pulse frequency range has less effect on efficiency gains.