Influence of Sinusoidal Velocity-Inlet on Turbulence Characteristics and Particle Motion Under New Cross-Structure.
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| Title: | Influence of Sinusoidal Velocity-Inlet on Turbulence Characteristics and Particle Motion Under New Cross-Structure. |
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| Authors: | Xi, Yuan1 (AUTHOR) xiyuan@dlut.edu.cn, Dai, Yan1 (AUTHOR), Li, Bingxuan1 (AUTHOR), Liang, Hai2 (AUTHOR), Su, Shuyu1,3 (AUTHOR) 1141060436@qq.com |
| Source: | Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ). Dec2025, Vol. 50 Issue 24, p20613-20632. 20p. |
| Subjects: | Particle motion, Computational fluid dynamics, Kinetic energy, Chemical reactors, Turbulence, Regression analysis, Particle dynamics |
| Abstract: | Capturing fine particles is challenging for industrial dust removal due to the smaller size. Accurate prediction and precise regulation of particle residence time are key. A new cross-structure reactor with sinusoidal velocity-inlet is proposed for achieving this purpose. The CFD-DEM method is employed to explore the influence of width-to-diameter ratio on turbulent characteristics and particles' motion behavior. Under the condition of width-to-diameter ratio L/D = 5, turbulent kinetic energy is affected dramatically by the sinusoidal regulation. The amplitude of sinusoidal parameters exerts the most significant impact on particle residence time. When amplitude is altered from 0.5 to 3, the turbulent kinetic energy encounters an augmentation of 0.67 m2/s2. Additionally, the mechanism of interaction between particles and airflow is investigated by calculating fine particle's relative molecular mass, size, velocity, trajectory, residence time, and injection position. The larger the particle size is, the longer the residence time is for the identical relative molecular mass. The greater the relative molecular mass is, the shorter the residence time is for the same particle size. Ultimately, in order to predict and control the particle residence time precisely, a regression model is established and its correlation coefficient is 0.9956. The regression model also demonstrates the factors effects (amplitude, phase, and period) and the mutual functions among them. The greatest impact of the interaction factors is amplitude/phase interactions, while the lowest influence is amplitude/period interactions. When configured with an amplitude of 2.1931 mm, phase shift of T/6, and periodicity of 0.75 s, the residence time is longest. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | Capturing fine particles is challenging for industrial dust removal due to the smaller size. Accurate prediction and precise regulation of particle residence time are key. A new cross-structure reactor with sinusoidal velocity-inlet is proposed for achieving this purpose. The CFD-DEM method is employed to explore the influence of width-to-diameter ratio on turbulent characteristics and particles' motion behavior. Under the condition of width-to-diameter ratio L/D = 5, turbulent kinetic energy is affected dramatically by the sinusoidal regulation. The amplitude of sinusoidal parameters exerts the most significant impact on particle residence time. When amplitude is altered from 0.5 to 3, the turbulent kinetic energy encounters an augmentation of 0.67 m2/s2. Additionally, the mechanism of interaction between particles and airflow is investigated by calculating fine particle's relative molecular mass, size, velocity, trajectory, residence time, and injection position. The larger the particle size is, the longer the residence time is for the identical relative molecular mass. The greater the relative molecular mass is, the shorter the residence time is for the same particle size. Ultimately, in order to predict and control the particle residence time precisely, a regression model is established and its correlation coefficient is 0.9956. The regression model also demonstrates the factors effects (amplitude, phase, and period) and the mutual functions among them. The greatest impact of the interaction factors is amplitude/phase interactions, while the lowest influence is amplitude/period interactions. When configured with an amplitude of 2.1931 mm, phase shift of T/6, and periodicity of 0.75 s, the residence time is longest. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 2193567X |
| DOI: | 10.1007/s13369-025-10212-y |
