Study of hydraulic oil filtration process from solid admixtures using rotating perforated cylinder

Brazhenko, Volodymyr; Qiu, Yibo; Mochalin, Ievgen; Zhu, Gangguo; Cai, Jiancheng; Wang, Dongyun

doi:10.1016/j.jtice.2022.104578

Cited by 8 publications

(8 citation statements)

References 54 publications

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“…C f and A f were calculated directly from Equations ( 16) and (18), respectively. In order to separate the contributions of M f and K f in Equation (15), a new simulation was performed which consisted of forcing the fluid-structure interface to rotate and deform statically according to Φ f 1 scaled by h. Under these circumstances, F f q 1 q 1 in the direction associated with Φ f 1 is only induced by q 1 as well as its corresponding added modal coefficient, and F f q 2 q 1 in the direction associated with Φ f 2 is only induced by q 1 as well as its corresponding added modal coefficient, as shown in Equations ( 19) and (20) and Figure 4:…”

Section: Numerical Methodologymentioning

confidence: 99%

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On the Added Modal Coefficients of a Rotating Submerged Cylinder Induced by a Whirling Motion—Part 2: Numerical Investigation

Roig,

Sánchez-Botello,

Escaler

2023

JMSE

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Part 2 of this work presents a numerical methodology, validated using the experimental results presented in Part 1, to calculate the added modal coefficients of a submerged cylinder in water both when it oscillates and when it rotates with a whirling motion. The numerical methodology is based on computational fluid dynamic simulations that obtain the added modal forces on the cylinder when it is forced to vibrate with mode shapes calculated using acoustic-structural modal analysis. Then, these forces are processed with a curve-fitting algorithm to extract all the coefficients. Most numerical coefficients presented a close agreement with the corresponding experimental ones, although the added modal damping was overestimated. In general, the added modal mass was found to be independent of both the rotating speed and the whirling frequency except for low whirling frequencies when it increased. The added modal damping was found to depend on both parameters, and the rest of the coefficients were independent of the whirling frequency and only depended on the rotating speed. As a conclusion, this numerical approach has permitted the study of particular conditions that could not be experimentally tested and thus broadened the knowledge of the behavior of the added modal coefficients of rotating submerged cylinders.

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Section: Numerical Methodologymentioning

confidence: 99%

“…K f and B f were subsequently computed substituting the numerically calculated values of F f q 1 q 1 and F f q 2 q 1 in Equations ( 19) and (20). Finally, using K f and Equation (15), M f was computed.…”

Section: Numerical Methodologymentioning

confidence: 99%

On the Added Modal Coefficients of a Rotating Submerged Cylinder Induced by a Whirling Motion—Part 2: Numerical Investigation

Roig,

Sánchez-Botello,

Escaler

2023

JMSE

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“…Because the model is a solid-fluid multiphase model, it needs to account for forces acting on the particles, such as drag force and gravity force, whether in solid-gas or solid-liquid interactions, as investigated by Brazhenko et al [23]. Furthermore, drag force remains a key consideration in the gas-solid-liquid model investigated by Zhan et al [24], as well as in the CSTR model by Kou et al [25].…”

Section: Model Validationmentioning

confidence: 99%

Effect of Inserting Baffles on the Solid Particle Segregation Behavior in Fluidized Bed Reactor: A Computational Study

Kreesaeng,

Chalermsinsuwan,

Piumsomboon

2024

ChemEngineering

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In multi-solid, particle-size fluidized bed reactor systems, segregation is commonly observed. When segregation occurred, small solid particles were entrained to the top of the bed and escaped from the reactor. During the combustion process, the small solid particles that escaped from the boiler were burned and subjected to damage around the cyclone separator. This study then employed a computational fluid dynamics approach to investigate solid particle behavior in the reactor using three different sizes of solid particles. The effects of baffle insertion, baffle angle, stage number, and its arrangement were examined. The percentage of segregation was calculated to compare behavior among different reactor systems. The insertion of 45-degree baffles resulted in reduced segregation behavior compared to cases without baffles and with 90-degree baffles, attributed to solid hindering and collision phenomena. Additionally, a double-stage baffle with any arrangement could reduce segregation behavior. The best arrangement was “above-arrangement” due to particles hindering, swirling, and accumulating between the baffle stages. Therefore, to diminish segregation behavior and enhance combustion chemical reactions, the insertion of baffles in the reactor zone is recommended.

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“…e n and e t are the normal and tangential coefficients. The CFD-DPM method was employed in ANSYS FLUENT 19.2, which utilizes the finite volume method in structured meshes to solve the gas-phase equations mentioned above and tracks particles in the domain using Lagrangian coordinates [28,29]. All the simulations were carried out in parallel on a workstation with a 48 × 2.8 GHz processor and 256 GB RAM.…”

Section: Boundary Conditions and Numerical Schemesmentioning

confidence: 99%

A Preliminary Numerical Study on the Performance of Cyclone Separators in Supercritical CO2 Solar Power Plants

Li,

Zhu,

Liu

et al. 2023

Processes

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A combined approach of computational fluid dynamics, the discrete phase model, and the wall erosion model was used to numerically investigate the hydrodynamics, separation efficiency, and erosion rate in cyclone separators for s-CO2 solar power plants. Moreover, the results were compared with those for air and CO2 as carrier phases. The experimental data from the literature were used to validate the numerical model, and it was observed that the simulated gas velocities and wall erosion rate accurately aligned with the experimental measurements. The numerical results reveal that s-CO2 had the largest tangential velocity compared to the other two media; its area-weighted axial velocity of upward flow was the lowest in the middle part of the cyclone body, and varied considerably in the bottom region of the conical section. The particles were all collected at the bottom surface of air and CO2, but the separation efficiency of s-CO2 was 81.51%, due to the poor distribution of the vortex and short circuit. Finally, the erosion rate distribution and averaged surface erosion rate were also analyzed for the three carrier phases.

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Study of hydraulic oil filtration process from solid admixtures using rotating perforated cylinder

Cited by 8 publications

References 54 publications

On the Added Modal Coefficients of a Rotating Submerged Cylinder Induced by a Whirling Motion—Part 2: Numerical Investigation

On the Added Modal Coefficients of a Rotating Submerged Cylinder Induced by a Whirling Motion—Part 2: Numerical Investigation

Effect of Inserting Baffles on the Solid Particle Segregation Behavior in Fluidized Bed Reactor: A Computational Study

A Preliminary Numerical Study on the Performance of Cyclone Separators in Supercritical CO2 Solar Power Plants

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