Flow field energy analysis of dynamic impinging stream reactor based on modal decomposition

ZHANG Jianwei; LI Zhenhong; DONG Xin; FENG Ying

doi:10.11729/syltlx20230119

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ZHANG J W, LI Z H, DONG X, et al. Flow field energy analysis of dynamic impinging stream reactor based on modal decomposition[J]. Journal of Experiments in Fluid Mechanics, doi: 10.11729/syltlx20230119.

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Flow field energy analysis of dynamic impinging stream reactor based on modal decomposition

College of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang　110142, China

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Received Date: September 13, 2023
Revised Date: November 14, 2023
Accepted Date: November 27, 2023
Available Online: February 27, 2024

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Abstract

The study investigates the energy distribution patterns within the flow field of a dynamic impact stream reactor through a combination of experimental and theoretical analysis. The flow field inside the dynamic impact stream reactor is measured using TR–PIV (Time-Resolved Particle Image Velocimetry) technology. Various nozzle spacings, different outlet mean velocities, and different outlet velocity differences are examined to understand the flow structure and energy distribution within the reactor. By performing eigenvalue orthogonal decomposition on the two-dimensional velocity field within the dynamic impact stream reactor, different scale quasi-ordered structures within the flow field and energy characteristics under different eigenmodes are extracted. Large-scale coherent structures in the flow field are distributed in the radial jet region and near the wall surface below the two nozzles. The energy of low-order modes in the reactor's flow field initially increases and then decreases as the nozzle spacing increases, with the highest energy proportion observed at a nozzle spacing of L/d = 4. The energy also increases with increasing outlet mean velocity and outlet velocity difference. Under dynamic outlet conditions, the energy proportion in the flow field of the impact stream reactor is higher, and the large-scale coherent structures in the flow field are more pronounced. This significantly enhances momentum exchange within the flow field, contributing to improved mixing efficiency.
- dynamic impinging stream,
- proper orthogonal decomposition,
- flow field energy,
- coherent structure

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[1]	DONG B, QIAN H L, XUE C Y, et al. Controllable synthesis of hierarchical micro/nano structured FePO₄ particles under synergistic effects of ultrasound irradiation and impinging stream[J]. Advanced Powder Technology, 2020, 31(10): 4292–4300. doi: 10.1016/j.apt.2020.09.002
[2]	THUWAPANICHAYANAN R, KUMKLAM P, SOPONRONNARIT S, et al. Mathematical model and energy utilization evaluation of a coaxial impinging stream drying system for parboiled paddy[J]. Drying Technology, 2022, 40(1): 158–174. doi: 10.1080/07373937.2020.1775640
[3]	TSAOULIDIS D, ORTEGA E G, ANGELI P. Intensified extraction of uranium(VI) in impinging-jets contactors[J]. Chemical Engineering Journal, 2018, 342: 251–259. doi: 10.1016/j.cej.2018.02.049
[4]	LIAN Z Y, ZHANG Y, WANG X Z. Manufacturing of high quality hydrotalcite by computational fluid dynamics simulation of an impinging jet crystallizer[J]. Ceramics International, 2022, 48(11): 15470–15482. doi: 10.1016/j.ceramint.2022.02.081
[5]	WANG Y, WANG Y, LIU Y X. Fe^{2 +}/heat-coactivated PMS oxidation-absorption system for H₂S removal from gas phase[J]. Separation and Purification Technology, 2022, 286: 120458. doi: 10.1016/j.seppur.2022.120458
[6]	ZHANG J W, HE Z Y, SHA X L, et al. Hilbert-Huang transform analysis of the concentration field of a two-layer impinging stream mixer[J]. Chemical Engineering & Technology, 2022, 45(9): 1614–1622. doi: 10.1002/ceat.202200142
[7]	张建伟, 许仲荟, 董鑫, 等. 双组分层撞击流反应器浓度场混沌分析[J]. 过程工程学报, 2022, 22(6): 802–810. DOI: 10.12034/j.issn.1009-606X.221180 ZHANG J W, XU Z H, DONG X, et al. Chaos analysis of concentration field in two-component layered impinging stream reactor[J]. The Chinese Journal of Process Engineering, 2022, 22(6): 802–810. doi: 10.12034/j.issn.1009-606X.221180
[8]	BERKOOZ G, HOLMES P, LUMLEY J L. The proper orthogonal decomposition in the analysis of turbulent flows[J]. Annual Review of Fluid Mechanics, 1993, 25: 539–575. doi: 10.1146/annurev.fl.25.010193.002543
[9]	PASTRANA H, TREVIÑO C, PÉREZ-FLORES F, et al. TR-PIV measurements of turbulent confined impinging twin-jets in crossflow[J]. Experimental Thermal and Fluid Science, 2022, 136: 110667. doi: 10.1016/j.expthermflusci.2022.110667
[10]	TORRES P, GONCALVES N D, FONTE C P, et al. Proper orthogonal decomposition and statistical analysis of 2D confined impinging jets chaotic flow[J]. Chemical Engineering & Technology, 2019, 42(8): 1709–1716. doi: 10.1002/ceat.201900050
[11]	CHEN W H, LIU J J, LI J Y, et al. Assessment of a confined thermal plume by PIV combined with POD analysis[J]. Applied Thermal Engineering, 2021, 188: 116590. doi: 10.1016/j.applthermaleng.2021.116590
[12]	张建伟, 张学良, 冯颖, 等. 水平对置撞击流的POD分析及混合特性[J]. 过程工程学报, 2016, 16(1): 26–33. DOI: 10.12034/j.issn.1009-606X.215319 ZHANG J W, ZHANG X L, FENG Y, et al. POD analysis and mixing characteristics of impinging streams from two opposite nozzles[J]. The Chinese Journal of Process Engineering, 2016, 16(1): 26–33. doi: 10.12034/j.issn.1009-606X.215319
[13]	LI C, YUE S, LI M. Numerical simulation of the drying characteristics of a high-moisture particle in a dynamic asymmetric impinging stream reactor[J]. Chemical Papers, 2022, 76(1): 41–56. doi: 10.1007/s11696-021-01832-3
[14]	QIU S X, XU P, JIANG Z T, et al. Numerical modeling of pulsed laminar opposed impinging jets[J]. Engineering Applications of Computational Fluid Mechanics, 2012, 6(2): 195–202. doi: 10.1080/19942060.2012.11015414
[15]	刘雪晴. 动态非对称撞击流反应器流动特性研究[D]. 武汉: 华中科技大学, 2019. LIU X Q. Study on flow characteristics of dynamic asymmetric impinging stream reactor[D]. Wuhan: Huazhong University of Science and Technology, 2019.
[16]	SIROVICH L. Turbulence and the dynamics of coherent structures. I. Coherent structures[J]. Quarterly of Applied Mathematics, 1987, 45(3): 561–571. doi: 10.1090/qam/910462

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