Application of three-dimensional diagnostics on the direct-current electric-field assisted combustion

Liu, Hecong; Yang, Zifeng; Cai, Weiwei

doi:10.1016/j.ast.2021.106657

Cited by 9 publications

(4 citation statements)

References 44 publications

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“…(c) Some advanced methods like machine/deep learningassisted methods [114] and hybrid methods [109,115] that used in gas flame detection could be tailored to the metal flame measurement. (d) Combining tomographic techniques [116,117] with the existing optical diagnostics to realize spatially-resolved measurements of some important parameters. (e) Appling in situ XRD method to detect the internal structure of burning particles, so as to study the special combustion behaviors like micro-explosion in some metal particle combustion processes.…”

Section: Conclusion Unresolved Problems and Future Directionsmentioning

confidence: 99%

Combustion diagnostics of metal particles: a review

Fan¹,

Liu²,

Yu³

2023

Meas. Sci. Technol.

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Metal fuel is one of the attractive alternative fuels for its high energy density and zero carbon emission. In the past, they were often used as additives in fireworks and propellants. More attentions have been paid to metal fuels as the environmental issue and energy dilemma become increasingly severe. Ongoing efforts have been devoted to both modelling and experimental studies of metal fuel combustion. This review mainly focuses on the experimental progress on the combustion of micron-scale metal fuels during the past three decades. The experimental setups and the combustion diagnostics techniques used for single particle combustion and metal dust flames have significant distinctions, so they have been summarized separately. Those setups to produce single particle flames or metal dust flames are discussed in terms of their structure, scope of application, advantages and disadvantages. The diagnostics techniques are classified according to the physical parameters that are commonly adopted to characterize the metal particle combustion including burn time, temperature, particle size, dust concentration and burning velocity. Both online and offline measurement techniques are investigated in detail focusing on the measurement principle, system configuration and uncertainty analysis. Finally, the review is concluded with some unresolved problems in the field of metal particles combustion diagnostics, and provides insights into promising future research directions.

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Section: Conclusion Unresolved Problems and Future Directionsmentioning

confidence: 99%

Combustion diagnostics of metal particles: a review

Fan¹,

Liu²,

Yu³

2023

Meas. Sci. Technol.

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“…In addition, relevant algorithms should be optimized and integrated for broad applications. Furthermore, with the replacement of corresponding 3D reconstruction algorithms and image shifting patterns, the present scheme can also be adjusted for extending the hybrid PIV method to other 3D3C velocimetry techniques, such as tomographic PIV, as the tomographybased 3D OFM has already been proposed [25].…”

Section: Data Availability Statementmentioning

confidence: 99%

“…The dye in the water [22], the cloud patterns from satellite imagery [23] and laser-induced fluorescence fields [24] can all be the available tracer media for the OFM. Furthermore, the OFM can be used to refine the 2D and three-component (2D3C) velocity field through the 3C velocity reconstruction [20] and can even be extended to 3D3C velocimetry via combination with the tomographic reconstruction [25].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the hybrid PIV method was further improved and integrated by Liu et al [28,29] but is still limited to the refinement of 2D and two-component (2D2C) velocity fields and is unable to fully resolve tiny vortices in the 3D sense. Inspired by recent progress of the OFM [20,25], the conventional 2D2C hybrid PIV method can also be extended to 3D3C velocimetry through similar 3D reconstruction. Furthermore, a recent work [13] also suggests that the dualplane stereoscopic PIV (DP-s-PIV) is a recommended 3D3C velocimetry technique with a relatively simple reconstruction algorithm, and thus it can be a proper carrier for extending the conventional hybrid PIV method to the 3D3C velocimetry.…”

Section: Introductionmentioning

confidence: 99%

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Extensional study of optical-flow enhanced hybrid PIV method for dual-plane stereoscopic PIV measurement

Wang¹,

Zheng²,

Li³

et al. 2022

Meas. Sci. Technol.

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The high-speed dual-plane stereoscopic particle image velocimetry (DP-s-PIV) can capture time-resolved three-component (3C) velocity and vorticity vectors in the measurement region, but its spatial resolvability of tiny vortices is blocked by the intrinsic limitation of the cross-correlation evaluation. To overcome this limitation, we propose a scheme to extend the original two-component (2C) optical flow enhanced hybrid PIV method to DP-s-PIV through three-dimensional (3D) reconstruction, with its feasibility and resolvability validated through the result comparisons with the cross-correlation evaluation used in DaVis 8.4. Comparisons suggest that the optical flow enhanced hybrid PIV scheme can greatly improve the spatial resolvability of the velocity field for DP-s-PIV. Moreover, the hybrid scheme can also provide better visualization of vortical structures and enhanced precision in evaluating the vorticity distribution, allowing for a further identification of vortex types in a stratified swirling jet flow through the combined criteria (vorticity component and Q criterion).

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