正反馈式流体振荡器内部流动特性的数值模拟

doi:10.11949/0438-1157.20201883

摘要/Abstract

摘要：

为探索正反馈式流体振荡器内部流动特性，建立了正反馈式流体振荡器的三维数值模型。采用数值模拟的方法对流体振荡器的内部流动特性进行了研究，通过监测特征点的压力变化和特征面的质量流率变化，对振荡器的内部流动过程进行量化并分析其内部的流动过程和原理。结果表明，在柯恩达效应和涡流的共同作用下，该正反馈式流体振荡器内部流场呈周期性振荡，振荡腔和反馈通道中的流体流动过程具有良好的周期性和稳定性，且频率与振荡器振荡频率一致。

关键词: 正反馈式流体振荡器, 内部流动特性, 压力, 质量流率

Abstract:

In order to understand the internal flow characteristics of the feedback fluidic oscillator, this paper established a three-dimensional numerical model of the feedback fluid oscillator. The internal flow characteristics of the jet oscillator are studied by numerical simulation. The internal flow process of the oscillator is quantified by monitoring the pressure change of the characteristic point and the mass flow rate change of the characteristic surface, and the internal flow process and principle are analyzed. The results show that the internal flow field of the positive feedback fluid oscillator oscillates periodically under the combined action of Coanda effect and eddy current. The fluid flow process in the oscillation cavity and feedback channel has good periodicity and stability, and the frequency is consistent with the oscillation frequency of the oscillator.

Key words: feedback fluidic oscillator, internal flow characteristics, pressure, mass flow rate

中图分类号:

别海燕, 黄晨, 安维中, 李玉龙, 林子昕. 正反馈式流体振荡器内部流动特性的数值模拟[J]. 化工学报, 2021, 72(3): 1504-1511.

BIE Haiyan, HUANG Chen, AN Weizhong, LI Yulong, LIN Zixin. Numerical simulation of internal flow characteristics of feedback fluidic oscillator[J]. CIESC Journal, 2021, 72(3): 1504-1511.

图/表 8

图1 正反馈式流体振荡器结构示意图1—入口；2—喷嘴；3—反馈回路；4—混合腔；5—劈尖；6—出口1；7—出口2

Fig.1 Schematic diagram of feedback fluidic oscillator

图2 正反馈式流体振荡器的网格示意图

Fig.2 Grid mesh of feedback fluidic oscillator

图3 一个周期内的正反馈式流体振荡器中间平面速度云图

Fig.3 Mid-plane velocity contours of feedback fluidic oscillator in a cycle

图4 一个周期反馈流体振荡器的中间平面压力分布图

Fig.4 Mid-plan pressure contours of feedback fluidic oscillator in a cycle

图5 振荡器模型及压力监测点分布

Fig.5 Fluidic geometry and pressure measurement locations

图6 ΔP随时间变化的情况

Fig.6 ΔP varied with time at various locations

图7 振荡模型及质量流率监测面分布

Fig.7 Fluidic geometry and mass flow rate measurement locations

图8 各监测面的质量流率随时间变化的情况

Fig.8 Mass flow rate varied with time at various locations

参考文献 30

1	Woszidlo R, Ostermann F, Schmidt H J. Fundamental properties of fluidic oscillators for flow control applications[J]. AIAA Journal, 2019, 57(3): 978-992.
2	吴西云, 董金钟. 射流振荡器的回流特性和切换特性研究[J]. 科学技术与工程, 2016, 16(32): 314-318.
	Wu X Y, Dong J Z. Research on the reverse flow and switching characteristics of fluidic oscillators[J]. Science Technology and Engineering, 2016, 16(32): 314-318.
3	Gregory J, Tomac M N. A review of fluidic oscillator development and application for flow control[C]//43rd Fluid Dynamics Conference. San Diego, CA, 2013.
4	邹久朋, 刘学武, 程蛟, 等. 不同外激励参数下射流的附壁振荡特性[J]. 振动·测试与诊断, 2017, 37(6): 1201-1207.
	Zou J P, Liu X W, Cheng J, et al. Characteristics of the jet wall oscillation corresponding to different external excitation parameters[J]. Journal of Vibration, Measurement & Diagnosis, 2017, 37(6): 1201-1207.
5	Tesař V, Hung C H, Zimmerman W B. No-moving-part hybrid-synthetic jet actuator[J]. Sensors and Actuators A: Physical, 2006, 125(2): 159-169.
6	陈祖志. 射流振荡制冷机性能与机理研究[D]. 大连: 大连理工大学, 2008.
	Chen Z Z. Study on performance and mechanism of jet-oscillation refrigerator[D]. Dalian: Dalian University of Technology, 2008.
7	刘伟, 冀晓辉. 静止式气波制冷机振荡特性的实验研究[J]. 制冷学报, 2004, 25(2): 21-24.
	Liu W, Ji X H. The experimental research on oscillation character of the static gas wave refrigerator[J]. Refrigeration Journal, 2004, 25(2): 21-24.
8	王忠, 李甘牛, 陈滨. 一种单出口流体振荡器件特性实验研究[J]. 南京航空航天大学学报, 2015, 47(6): 877-883.
	Wang Z, Li G N, Chen B. Experimental investigation on characteristics of single-outlet fluidic oscillators[J]. Journal of Nanjing University of Aeronautics & Astronautics, 2015, 47(6): 877-883.
9	孟腾, 董金钟, 吴西云. 流体振荡器在进气道流动控制中的应用研究[J]. 科学技术与工程, 2016, 16(32): 319-324.
	Meng T, Dong J Z, Wu X Y. Active flow control with fluidic in S-shaped inlet[J]. Science Technology and Engineering, 2016, 16(32): 319-324.
10	程瑞斌. 振荡射流改善飞行器气动特性的实验研究[D]. 南京: 南京航空航天大学, 2013.
	Cheng R B. Study of oscillation jet to improve aerodynamic characteristics of air vehicle[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2013.
11	Konsowa A H. Decolorization of wastewater containing direct dye by ozonation in a batch bubble column reactor[J]. Desalination, 2003, 158(1/2/3): 233-240.
12	Zhang X X, Zhang S H, Peng J M, et al. A fluidic oscillator with concave attachment walls and shorter splitter distance for fluidic DTH hammers[J]. Sensors and Actuators A: Physical, 2018, 270: 127-135.
13	高军, 孙厚钧. 流体自控振荡的机理及其对水环境维护的有益功能[J]. 环境科学学报, 2017, 37(12): 4646-4652.
	Gao J, Sun H J. Mechanism of fluidic oscillation and its potential utility in water environment engineering[J]. Acta Scientiae Circumstantiae, 2017, 37(12): 4646-4652.
14	Zimmerman W B, Zandi M, Hemaka Bandulasena H C, et al. Design of an airlift loop bioreactor and pilot scales studies with fluidic oscillator induced microbubbles for growth of a microalgae Dunaliella salina[J]. Applied Energy, 2011, 88(10): 3357-3369.
15	He J F, Yin K, Peng J M, et al. Design and feasibility analysis of a fluidic jet oscillator with application to horizontal directional well drilling[J]. Journal of Natural Gas Science and Engineering, 2015, 27: 1723-1731.
16	Zimmerman W B, Tesař V, Bandulasena H C H. Towards energy efficient nanobubble generation with fluidic oscillation[J]. Current Opinion in Colloid & Interface Science, 2011, 16(4): 350-356.
17	熊青山, 孙震, 刘加旭. 深宽比及劈高对气动射流元件射流切换影响模拟试验研究[J]. 液压与气动, 2007, (3): 20-23.
	Xiong Q S, Sun Z, Liu J X. Analog test study of nozzle width and split type's influence on pneumatic efflux element switching performance[J]. Chinese Hydraulics & Pneumatics, 2007, (3): 20-23.
18	吴西云, 董金钟. 流体振荡器的数值研究[J]. 建筑热能通风空调, 2017, 36(2): 58-61.
	Wu X Y, Dong J Z. Numerical study of a fluidic oscillator[J]. Building Energy & Environment, 2017, 36(2): 58-61.
19	Tesař V, Zhong S, Rasheed F. New fluidic-oscillator concept for flow-separation control[J]. AIAA Journal, 2012, 51(2): 397-405.
20	Kara K. Numerical study of internal flow structures in a sweeping jet actuator[C]//33rd AIAA Applied Aerodynamics Conference. Dallas, TX, 2015.
21	程蛟. 射流外激励切换附壁振荡特性与优化研究[D]. 大连: 大连理工大学, 2016.
	Cheng J. Research on the characteristic and optimization of wall-attaching and oscillation in external stimulation jet[D]. Dalian: Dalian University of Technology, 2016.
22	Pandey R J, Kim K Y. Comparative analysis of flow in a fluidic oscillator using large eddy simulation and unsteady Reynolds-averaged Navier–Stokes analysis[J]. Fluid Dynamics Research, 2018, 50(6): 065515.
23	李俊龙. 射流振荡激励响应特性与双级振荡研究[D]. 大连: 大连理工大学, 2017.
	Li J L. Researchon response characteristics of jet oscillating stimulation and two-stage oscillation[D]. Dalian: Dalian University of Technology, 2017.
24	Seo J H, Mittal R. Computational modeling and analysis of sweeping jet fluidic oscillators[C]//47th AIAA Fluid Dynamics Conference. Denver, Colorado, 2017.
25	Bobusch B C, Woszidlo R, Bergada J M, et al. Experimental study of the internal flow structures inside a fluidic oscillator[J]. Experiments in Fluids, 2013, 54(6): 1-12.
26	雷晗, 单勇, 谭晓茗, 等. 超声速流体振荡器流动特性数值研究[J]. 重庆理工大学学报(自然科学), 2019, 33(3): 126-132.
	Lei H, Shan Y, Tan X M, et al. Numerical study of flow characteristic in wall-attachment fluidic oscillator[J]. Journal of Chongqing University of Technology (Natural Science), 2019, 33(3): 126-132.
27	Pandey R J, Kim K Y. Numerical modeling of internal flow in a fluidic oscillator[J]. Journal of Mechanical Science and Technology, 2018, 32(3): 1041-1048.
28	Wen X, Liu J J, Kim D, et al. Study on three-dimensional flow structures of a sweeping jet using time-resolved stereo particle image velocimetry[J]. Experimental Thermal and Fluid Science, 2020, 110: 109945.
29	Jeong H, Kim K. Shape optimization of a feedback-channel fluidic oscillator[J]. Engineering Applications of Computational Fluid Mechanics, 2018, 12(1): 169-181.
30	杨军. 正反馈式射流振荡器性能研究及应用[D]. 大连: 大连理工大学, 2008.
	Yang J. Study on performance of feedback jet-oscillator and application[D]. Dalian: Dalian University of Technology, 2008.

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