Numerical Investigation on the Working Characteristics of Dual Synthetic Hot Jet Actuator in Icing Environment
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摘要: 为研究结冰环境中热合成双射流激励器工作特性, 采用离散相模型(discrete phase model，DPM), 结合动网格方法, 数值研究了结冰环境中来流速度、液滴含量、液滴直径对激励器工作特性的影响. 结果表明, 来流速度较小时, 双射流激励器出口形成热合成射流融合区, 由于热射流的加热作用, 温度较高, 环境中的过冷液滴难以进入激励器腔体; 来流速度较大时, 射流涡向激励器两侧脱落, 液滴不断进入激励器腔体内, 激励器加热效率降低. 此外, 过冷液滴含量、直径对激励器周围速度场影响可以忽略; 随着过冷液滴浓度增加, 液滴直径减小, 激励器加热效率逐渐降低.Abstract: In order to investigate the working characteristics of the dual synthetic hot jet actuator in icing environment, the discrete phase model(DPM) combined with dynamic mesh method was used to study the influences of inlet velocity, droplet content and droplet diameter in icing environment on the characteristics of the actuator. The results show that when the inlet velocity is low, a fusion zone of synthetic hot jet is formed at the exit of the dual synthetic jet actuator. Because of the heating effect of the hot jet in the fusion zone, it is difficult for the supercooled droplets to enter the cavities of the actuator. When the inlet velocity is high, the vortices induced by the jets fall off to both sides of the actuator and the droplets continue to enter the cavities of the dual jet actuator, which makes the heating efficiency of the actuator decrease. Besides, the contents and the diameters of supercooled droplets almost do not affect the velocity filed of the dual synthetic jet actuator. With the increase of the concentration of supercooled droplets and the decrease of the droplet diameter, the heating efficiency of actuator decreases gradually.
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图 1 热合成双射流激励器在结冰环境中工作物理模型
Figure 1. Physical model of dual synthetic hot jet actuator in icing environment
图 3 热合成双射流激励器出口监测点
Figure 3. Outlet monitoring points of dual synthetic hot jet actuator
图 5 双射流激励器出口A，C点单周期内速度
Figure 5. Velocities of point A and C in single period at the outlet of dual jet actuator
图 6 不同来流速度下，t=0.75τ0时刻流线及压力分布图
Figure 6. Streamlines and pressure distributions at t=0.75τ0 under different inlet velocities
图 7 不同来流速度下激励器出口A，C点单周期内速度
Figure 7. Velocities of point A and C in single period at the outlet of dual jet actuator under different inlet velocities
图 8 不同来流速度下激励器出口D, E点单周期内速度
Figure 8. Velocities of point D and E in single period at the outlet of dual jet actuator under different inlet velocities
图 9 不同来流速度下t=0.75τ0时刻温度分布图
Figure 9. Temperature distributions at t=0.75τ0 under different inlet velocities
图 10 不同来流速度下激励器出口A, D及I点单周期内温度
Figure 10. Temperatures of point A, D and I in single period at the outlet of dual jet actuator under different inlet velocities
图 11 不同来流速度下，t=0.75τ0时刻流场液滴质量浓度分布
Figure 11. Distribution of droplet mass concentration at t=0.75τ0 under different inlet velocities
图 12 不同来流速度下流场中D点单周期内液滴质量浓度
Figure 12. Droplet mass concentration at point D in single period under different inlet velocities
图 13 不同来流速度下激励器Q1腔体单周期内总液滴质量浓度
Figure 13. Total droplet mass concentration in actuator cavity Q1 in single period under different inlet velocities
图 14 不同液滴直径下流场中C点单周期内速度
Figure 14. Velocity of point C in single period with different droplet diameters
图 15 不同液滴直径下流场中D点单周期内速度
Figure 15. Velocity of point D in single period with different droplet diameters
图 16 不同液滴直径下流场中C点单周期内温度
Figure 16. Temperature of point C in single period with different droplet diameters
图 17 不同液滴直径下流场中H点单周期内温度
Figure 17. Temperature of point H in single period with different droplet diameters
图 18 不同液滴含量下流场中C点单周期内温度
Figure 18. Temperature of point C in single period with different droplet contents
图 19 不同液滴含量下流场中H点单周期内温度
Figure 19. Temperature of point H in single period with different droplet contents
actuator cavity dual jet actuator outlet diaphragm quantity D/mm depth/mm quantity outlet size/mm outlet separation/mm Δ/mm f/Hz 2 ϕ46 7 2 2×20 5 0.7 500 
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表 2 工况计算参数表
Table 2. Working conditions
No. V∞/(m/s) MVD/μm LWC/(g/m3) T∞/K 1~3 -3, -6, -10 100 10 248 4~6 -6 15，40，100 1.0 248 7~9 -6 100 0.3, 0.6, 1.0 248
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[1] Green S. Astudy of U. S. inflight icing accidents and incidents, 1978 to 2002[R]. AIAA 2006-82, 2006. [2] Philip A K. U. S inflight icing accidents and incidents, 2006 to 2010[D]. Knoxville, Tennessee: University ofTennessee, 2011. [3] Janjua Z A, Turnbull B, Hibberd S, et al. Mixed ice accretion on aircraft wings[J]. Physics of Fluids, 2018, 30(2): 027101. doi: 10.1063/1.5007301 [4] 杜雁霞, 桂业伟, 肖春华, 等. 溢流条件下飞机结冰过程的传热特性研究[J]. 航空动力学报, 2009, 24(9): 1966-1971. https://www.cnki.com.cn/Article/CJFDTOTAL-HKDI200909009.htmDu Y X, Gui Y W, Xiao C H, et al. Investigation of heat transfer characteristics of aircraft icing under runback water[J]. Journal of Aerospace Power, 2009, 24(9): 1966-1971(in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-HKDI200909009.htm [5] 罗振兵, 夏智勋, 邓雄, 等. 合成双射流及其流动控制技术研究进展[J]. 空气动力学报, 2017, 35(2): 252-264. https://www.cnki.com.cn/Article/CJFDTOTAL-KQDX201702015.htmLuo Z B, Xia Z X, Deng X, et al. Research progress of dual synthetic jets and its flow control technology[J]. Acta Aerodynamica Sinica, 2017, 35(2): 252-264(in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-KQDX201702015.htm [6] Luo Z B, Xia Z X. A novel valve-less synthetic-jet-based micro-pump[J]. Sensors and Actuators A: Physical, 2005, 122(1): 131-140. doi: 10.1016/j.sna.2005.03.062 [7] Luo Z B, Xia Z X, Liu B. New generation of synthetic jet actuators[J]. AIAA Journal, 2006, 44(10): 2418-2420. doi: 10.2514/1.20747 [8] Cattafesta L N Ⅲ, Sheplak M. Actuators for active flow-control[J]. Annual Review of Fluid Mechanics, 2011, 43: 247-272. doi: 10.1146/annurev-fluid-122109-160634 [9] Smith B L, Glezer A. The formation and evolution of synthetic jets[J]. Physics of Fluids, 1998, 10(9): 2281-2297. doi: 10.1063/1.869828 [10] Glezer A, Allen M G, Coe D J, et al. Synthetic jet actuator and applications thereof: US, 5758823[P]. 1998-06-02. [11] 罗振兵, 夏智勋, 刘冰. 单膜双腔双口合成射流激励器: 中国, 200610031334. 0[P]. 2006-08-16.Luo Z B, Xia Z X, Liu B. A synthetic jet actuator with a single diaphragm, dual cavities and exits: CN, 200610031334. 0[P]. 2006-08-16(in Chinese). [12] 罗振兵. 合成射流/合成双射流机理及其在射流矢量控制和微泵中的应用研究[D]. 长沙: 国防科学技术大学, 2006.Luo Z B. Principle of synthetic jet and dual synthetic jets, and the applications in jet vectoring andmicro-pump[D]. Changsha: National University of Defense Technology, 2006(in Chinese). [13] Luo Z B, Xia Z X. Advances in synthetic jet technology and applications in flow control[J]. Advances in Mechanics, 2005, 35(2): 221-234. [14] Deng X, Luo Z B, Xia Z X, et al. Active-passive combined and closed-loop control for the thermal management of high-power LED based on a dual synthetic jet actuator[J]. Energy Conversion and Management, 2017, 132: 207-212. doi: 10.1016/j.enconman.2016.11.034 [15] Nagappan N, Golubev V, Habashi W. Parametric analy-sis of icing control using synthetic jet actuators[R]. AIAA 2013-2453, 2013. [16] 蒋浩, 夏智勋, 罗振兵, 等. 合成双射流控制机翼水滴撞击特性[J]. 气体物理, 2017, 2(6): 39-47. https://www.cnki.com.cn/Article/CJFDTOTAL-QTWL201706006.htmJiang H, Xia Z X, Luo Z B, et al. Droplet impingement characteristics with dual synthetic jet control[J]. Physics of Gases, 2017, 2(6): 39-47(in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-QTWL201706006.htm [17] Jin D, Li Y H, Jia M, et al. Experimental characteri-zation of the plasma synthetic jet actuator[J]. Plasma Science and Technology, 2013, 15(10): 1034-1040. doi: 10.1088/1009-0630/15/10/14 [18] 杨升科, 郭奇灵, 罗振兵, 等. 基于合成射流的机翼溢流冰防护实验[J]. 航空动力学报, 2020, 35(11): 2364-2370. https://www.cnki.com.cn/Article/CJFDTOTAL-HKDI202011013.htmYang S K, Guo Q L, Luo Z B, et al. Experiment on airfoil runback ice protection based on synthetic jet[J]. Journal of Aerospace Power, 2020, 35(11): 2364-2370(in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-HKDI202011013.htm [19] Tang H, Zhong S. 2D numerical study of circular syn-thetic jets in quiescent flows[J]. The Aeronautical Journal, 2005, 109(1092): 89-97. doi: 10.1017/S0001924000000592 -
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