Experimental findings and analysis of terminal velocity and drag coefficient of Raschig Ring in vertical and inclined channel

Samantaray, Saroj Kumar; Mohapatra, S.; Munshi, Basudeb

doi:10.1016/j.powtec.2018.09.030

Cited by 9 publications

(2 citation statements)

References 23 publications

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“…This is achieved using the finite volume method, which is applied separately to each phase, as described by Eqs. ( 33) and ( 34) [251][252][253][254]. A significant advantage of the Eulerian-Eulerian approach is that the equations for both phases have the same form, so the same solution techniques can be used for each phase.…”

Section: Gas-particle Flow Modelingmentioning

confidence: 99%

Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

El‐Emam,

Zhou,

Yasser

2024

ChemBioEng Reviews

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Gas‐particle aero‐type cyclones have revolutionized biochemical processes, engineering industries, and environmental pollution protection by effectively separating particles from gas. These devices rely on gravitational energy and centrifugal force to dissipate particle phase energy, but achieving optimal energy efficiency while minimizing pressure drop remains challenging. This has led to the development of various cyclone designs in commercial industries, each with unique energy efficiency characteristics. The intricate gas‐particle flow inside cyclones is a critical issue impacted by cyclone geometry, operating conditions, and media parameters. Advanced numerical simulations have been employed to understand this complex flow pattern better, offering researchers valuable insights into the mechanisms of different cyclone separators. This comprehensive review explores the available numerical methods in the literature on cyclones and their corresponding validations. Computational numerical modeling is a promising technique for predicting cyclone energy efficiency, gas‐particle behavior, and overall performance. This investigation delves into the progress and numerical forms of gas‐particle flow cyclones, examining how different parameters impact cyclone performance and flow patterns within the two‐phase flow. The future developments and challenges that may further promote the development of aero‐type cyclone separators, providing theory and engineering support for future cyclone designs, are also covered. As a result, it can confidently be reported that aero‐type cyclone separators remain a critical component in various industrial sectors, offering energy‐efficient solutions for mitigating environmental pollutants and gas‐particle separation systems. With continued development and research, these devices will undoubtedly shape the future of energy processes and engineering industries, ushering in a new era of sustainability and efficiency.

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Section: Gas-particle Flow Modelingmentioning

confidence: 99%

Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

El‐Emam,

Zhou,

Yasser

2024

ChemBioEng Reviews

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“…They are also used as the packing material in the name of the raschig ring. Samantaray et al [ 22 ] calculated the settling velocity, V , and drag coefficient, C D , of the hollow cylinders in both vertical and inclined flow channels and developed a correlation for the C D as a function of Re .…”

Section: Problem Statement and Formulationmentioning

confidence: 99%

Experimental estimation of the settling velocity and drag coefficient of the hollow cylindrical particles settling in non‐Newtonian fluids in an annular channel

Mohammad

Munshi

2023

Can J Chem Eng

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The drag coefficient data of particles settling in an annular channel is very much essential for designing different solid–fluid handling equipment, such as the fluidized bed. Experimental settling velocity, wall factor, and drag coefficient data of the hollow‐cylinder particle are presented. Carboxymethyl cellulose solution has been used as the working fluid with a flow index of 0.64 ≤ n ≤ 0.91 and a consistency index of 0.31 ≤ K ≤ 1.81. The experimental results covered a wide diameter ratio range (0.14 ≤ deq/L ≤ 0.46), hollow cylinder inner to outer diameter ratio (0.2 ≤ di/do ≤0.8), and Reynolds number (0.05 ≤ Re ≤ 51 and 0.09 ≤ Re∞ ≤ 55). deq, di, and do are the equivalent inner and outer diameters of the particle, L is the annular gap, and Re and Re∞ are the Reynolds numbers in the presence and absence of the wall effect, respectively. The wall factor decreased, and the drag coefficient increased with deq/L and di/do ratios. The above parameters declined with the Reynolds number. The hollow cylinder experienced a lesser wall effect than the spherical particles settling in a non‐annular channel. In some cases, the wall factor of the hollow cylinder is found to be equal to the spherical particles settling in an annular channel. The developed correlations have successfully predicted the drag coefficients of the hollow cylinder.

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Modeling of Aerodynamic Systems

Zhou,

Elemam,

Agarwal

et al. 2024

Discrete Element Method for Multiphase Flows With Biogenic Particles

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Experimental findings and analysis of terminal velocity and drag coefficient of Raschig Ring in vertical and inclined channel

Cited by 9 publications

References 23 publications

Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

Numerical Investigation of Cyclone Separators: Physical Mechanisms and Theoretical Algorithms

Experimental estimation of the settling velocity and drag coefficient of the hollow cylindrical particles settling in non‐Newtonian fluids in an annular channel

Modeling of Aerodynamic Systems

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