Research on Reconstruction of Aerodynamic Field in Furnace by Acoustic Tomography Based on Scaling Function of Daubechies Wavelet

被引：0

作者：

Liu F. ^{[1
]}

Li Y. ^{[1
]}

机构：

[1] School of Mechanical and Power Engineering, Zhengzhou University, Henan Province, Zhengzhou

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2024年 / 44卷 / 05期

基金：

中国国家自然科学基金;

关键词：

acoustic tomography; Daubechies wavelet; flow field; gradient descent method; scaling function;

D O I：

10.13334/j.0258-8013.pcsee.230109

中图分类号：

学科分类号：

摘要：

Acoustic tomography is an advanced and promising approach to reconstruct the aerodynamic field in furnace non-intrusively. A reliable and optimal reconstruction algorithm is critical. In this paper, a novel acoustic tomographic algorithm for 2-D aerodynamic field in furnace is proposed, which originally takes a set of wavelet scaling functions as basis to reconstruct the spatial field to be measured. A scaling function has intriguing characteristics to contain information of all signal frequencies beneath the defined scale, so that it is expected to effectively reconstruct an objective field with complex spatial frequencies. Nevertheless, Daubechies wavelet is applied to construct the 2-D scaling function basis, for the advantage of compact support, orthogonality etc., so as to achieve better identification of reconstruction. On the other hand, the gradient descent method is adopted to solve the linear equation sets in the model. The geometric parameters related to the model are normalized to fit for different size or aspect ratio of flow field to be measured. By reconstructing different typical numerical phantoms of cross-sectional flow fields in a furnace, the proposed acoustic reconstruction model is essentially proved to be valid and robust. ©2024 Chin.Soc.for Elec.Eng.

引用

页码：1904 / 1912

页数：8

共 27 条

[1] DONG Jie, QIAO Jianqiang, A review on advanced clean coal power generation technology under "carbon peaking and carbon neutrality" goal[J], Electric Power, 55, 8, pp. 202-212, (2022)
[2] SUO Xinliang, SUN Donghai, SUN Huiliang, Research on test method of cold aerodynamic field on a tangentially firing boiler[J], Boiler Technology, 52, 6, pp. 15-19, (2021)
[3] YANG Yu, Studies of the flow and combustion characteristics of low-NOx pulverized coal swirl burners of large capacity boilers, (2015)
[4] SHI Huixian, Particles velocity distribution of the gas-solids flow field in the circulating fluidized beds by PIV[J], Journal of Hydrodynamics(Series A), 21, 1, pp. 8-12, (2006)
[5] ZHANG Juqi, Hong QI, REN Yatao, Acoustic tomography of temperature and velocity fields by using the radial basis function and alternating direction method of multipliers[J], International Journal of Heat and Mass Transfer, 188, 3, (2022)
[6] LIU Fuguo, ZHAO Naiguo, On-line monitoring of ash fouling in furnace waterwalls based on acoustic pyrometry[J], Proceedings of the CSEE, 38, 17, pp. 5134-5141, (2018)
[7] CUI Tingting, Research on acoustic measurement technology in termprature field and flow field of power plant boiler flue, (2018)
[8] SIELSCHOTT H．, Measurement of horizontal flow in a large scale furnace using acoustic vector tomography [J], Flow Measurement and Instrumentation, 8, 3-4, pp. 191-197, (1997)
[9] WANG Liang, FAN Peng, SHEN Guoqing, Reconstruction of the speed field inside a tangentially-fired furnace measured by using the acoustic-wave method and its simulation[J], Journal of Engineering for Thermal Energy and Power, 33, 6, pp. 83-87, (2018)
[10] Yanqin LI, WANG Yanwen, GUAN Xuefeng, A wavelet model on reconstructing complex aerodynamic field in furnace with acoustic tomography [J], Measurement, 157, (2020)

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