Mixing Characteristics of High‐Viscosity Fluids under Forced Vertical Vibration

Zhan, Xueying; He, Yu; Sun, Zhuang; Shen, Baojun; Li, Xiwen

doi:10.1002/ceat.201800546

Cited by 8 publications

(5 citation statements)

References 29 publications

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“…It can be observed that, with an increase in the grid density, the variation in the wind speed remains below 5%. This confirms that the meshing scheme satisfies the grid independence criterion [23]. The grid cell dimensions for three groups are detailed in Table 2.…”

Section: Computational Fluid Dynamics (Cfd) Simulationsupporting

confidence: 69%

The Design and Experimental Study of a Double-Column Scrambler Wind–Sand Separator for Sustainable Soil Wind Erosion Monitoring

Cai,

Hao,

Liu

et al. 2023

Sustainability

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Sand collectors play an indispensable role in the study of land desertification, with the wind–sand separator serving as a vital core component. It plays a pivotal role in researching soil wind erosion. In response to the challenge of wind–sand separation in high-wind conditions, we introduce a novel approach. We designed, optimized, and validated a double-column scrambler wind–sand separator through computational fluid dynamics (CFD) simulations and wind tunnel experiments. Our test results showcased the impressive performance of this double-column scrambler wind–sand separator. It achieved substantial reductions in wind velocities at both the exhaust and sandfall ports, with reductions of 89.56% and 89.85%, respectively. Furthermore, the wind–sand separation efficiency consistently exceeded 98% across wind speeds ranging from 6 to 15 m/s. This study establishes a robust scientific foundation for further enhancements in the performance of the double-column scrambler wind–sand separator, holding promise for advancements in the field of desertification monitoring and control.

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Section: Computational Fluid Dynamics (Cfd) Simulationsupporting

confidence: 69%

The Design and Experimental Study of a Double-Column Scrambler Wind–Sand Separator for Sustainable Soil Wind Erosion Monitoring

Cai,

Hao,

Liu

et al. 2023

Sustainability

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“…To achieve the effect of vibration mixing in the special case of grid motion, the slip grid technique can be used. 27 In this paper, a slip-grid model is implemented to apply the vibration, such that the wall motion of the container becomes a function of the velocity described in (2). This model is able to describe a moving mesh scenario where the mesh nodes make rigid motions within a specific region of the moving mesh.…”

Section: Methodsmentioning

confidence: 99%

Continuous conveying and mixing characteristics of high viscosity materials under acoustic vibration excitation

Zhan

et al. 2023

Preprint

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Investigating the conveying and mixing characteristics of high-viscosity fluids in an inclined flow channel under the excitation of acoustic frequency vibrations using computational fluid dynamics (CFD) methods. As the intensity of the acoustic vibration excitation increases, the free surface of the liquid transitions from generating Faraday waves to generating disordered jets. Continued increase in the amplitude leads to the liquid filling most of the vessel space, causing a blockage. However, slowly increasing the amplitude alleviates the blockage phenomenon. When high-viscosity materials are subjected to high-intensity acoustic vibration, the flow field is dominated by shear flow, which is accompanied by efficient stretching and folding. Changing the amplitude or frequency alone can cause blockage, and increasing the frequency of vibration excitation alone will not alleviate the blockage. Instead, increasing the amplitude can generate more mixing-promoting reflux, effectively relieving blockage while maintaining stable conveying capacity.

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“…To achieve the effect of vibration mixing in the special case of grid motion, the slip grid technique can be used. 27 In this article, a slip-grid model is implemented to introduce the vibration, making the vessel's wall motion a function of the velocity described in Equation ( 2). The conservation equation in integral form for a generic scalar on a control body V with boundary motion and a moving grid can be written as:…”

Section: Control Equations and Boundary Conditionsmentioning

confidence: 99%

“…To achieve the effect of vibration mixing in the special case of grid motion, the slip grid technique can be used 27 . In this article, a slip‐grid model is implemented to introduce the vibration, making the vessel's wall motion a function of the velocity described in Equation (2).…”

Section: Experimental Setup and Simulation Modelmentioning

confidence: 99%

Continuous conveying and mixing characteristics of high‐viscosity materials under acoustic vibration excitation

Zhan,

Ye,

et al. 2024

AIChE Journal

Self Cite

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Investigating the conveying and mixing characteristics of high‐viscosity fluids in an inclined flow channel under the excitation of acoustic vibration using computational fluid dynamics methods. As the intensity of the acoustic vibration excitation increases, the free surface of the liquid transitions from generating Faraday waves to generating disordered jets. Continued increase in the amplitude leads to the liquid filling most of the vessel space, causing a blockage. However, slowly increasing the amplitude alleviates the blockage phenomenon. When high‐viscosity materials are subjected to high‐intensity acoustic vibration, the flow field is dominated by shear flow, which is accompanied by efficient stretching and folding. Changing the amplitude or frequency alone can cause blockage, and increasing the frequency of vibration excitation alone will not alleviate the blockage. Instead, increasing the amplitude can generate more mixing‐promoting reflux, effectively relieving blockage while maintaining stable conveying capacity.

show abstract

Mixing Characteristics of High‐Viscosity Fluids under Forced Vertical Vibration

Cited by 8 publications

References 29 publications

The Design and Experimental Study of a Double-Column Scrambler Wind–Sand Separator for Sustainable Soil Wind Erosion Monitoring

The Design and Experimental Study of a Double-Column Scrambler Wind–Sand Separator for Sustainable Soil Wind Erosion Monitoring

Continuous conveying and mixing characteristics of high viscosity materials under acoustic vibration excitation

Continuous conveying and mixing characteristics of high‐viscosity materials under acoustic vibration excitation

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