Wall effect on cluster particle's settling terminal velocity and drag coefficient in Newtonian and non-Newtonian fluid medium

Mohammad, Hussain; Munshi, Basudeb

doi:10.1063/5.0156172

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…Shah [19] collected the experimental data from the published literature and established C D -Re s-p calculation models in the power-law fluid. Okesanya [20], Battistella [21], Mohammad [22], Shajahan [23], Ahonguio [24], and Xu [25] also proposed C D -Re s-p prediction models for spherical particles in power-law fluids, respectively.…”

Section: Introductionmentioning

confidence: 99%

A Novel Prediction Model of the Drag Coefficient of Irregular Particles in Power-Law Fluids

Hou,

Jiang,

Chen

et al. 2023

Processes

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The settlement drag coefficient of irregular particles in power-law fluids is a crucial parameter in the field of petroleum engineering. However, the irregular shape of the particle and the non-Newtonian rheological properties of the fluid make it challenging to predict the settlement drag coefficient. In this study, the spherical and irregular particle sedimentation processes in power-law fluids have been analyzed using a visual device and a high-speed camera system. A mechanical model dependent on the force balance of settlement particles was adopted to conduct a detailed statistical analysis of 114 spherical particle experimental results, and a prediction model of the drag coefficient of spherical particles in the power-law fluid was established with a mean relative error of 3.85%. On this basis, considering the influence of geometric shape on the law of particle sedimentation, a new irregular particle sedimentation resistance coefficient model in power-law fluid is established via the incorporation of the parameter circularity of 2D shape description c into the spherical particle sedimentation resistance coefficient predictive model. The parameters in the new irregular particle sedimentation resistance coefficient predictive model can be obtained via nonlinear data fitting of the 211 groups of irregular particles using experimental results in the power-law fluid. The model has high prediction accuracy for the drag coefficient of irregular particles in power-law fluid, with a mean relative error of 4.47, and expands the scope of engineering applications, which is of great significance for fracturing scheme design and wellbore cleaning.

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Section: Introductionmentioning

confidence: 99%

A Novel Prediction Model of the Drag Coefficient of Irregular Particles in Power-Law Fluids

Hou,

Jiang,

Chen

et al. 2023

Processes

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Experimental and numerical estimation of wall effect and drag coefficient on hollow frustum settling in annular and non-annular channels

Mohammad,

Munshi

2024

Powder Technology

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Experimental and numerical investigation of cylinder rising in co-current turbulent air pipe flow: Application in pneumatic ice drilling

Cao,

Cao

et al. 2023

Physics of Fluids

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Air-reverse-circulation drilling into ice sheets is a promising clean technology for fast and safe ice sample recovery in the polar regions. However, a few studies in the literature explore an ice cylinder's rising from rest in tubing filled by co-current air flow. This study builds an experimental setup as well as uses the computational fluid dynamics (CFD) method to characterize the process of ice cylinder rising from being seated at bottom. Variations of the drag coefficient when a cylinder starts to rise and the critical velocity, i.e., the minimum air injection velocity to raise a cylinder, are investigated with the experiments and simulations. Reynolds number is found to have a marginal effect on the drag coefficient and critical velocity while ice-cylinder-pipe geometry can influence the two factors. Wall effect resulting from the existence of pipe lateral wall can enhance the drag coefficient and accordingly, reduce critical velocity. Decreasing the clearance between cylinder and pipe or increasing cylinder length is observed to strengthen the wall effect, but enlarging the cylinder diameter surprisingly weakens the wall effect. A mathematical correlation is developed to quantify the interplay between cylinder-pipe geometry and critical velocity by using parameters like sphericities and diameter ratio. When a cylinder continues to rise off bottom, its drag coefficient would first increase quickly and then decrease gradually to a value where terminal velocity is achieved.

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Wall effect on cluster particle's settling terminal velocity and drag coefficient in Newtonian and non-Newtonian fluid medium

Cited by 3 publications

References 35 publications

A Novel Prediction Model of the Drag Coefficient of Irregular Particles in Power-Law Fluids

A Novel Prediction Model of the Drag Coefficient of Irregular Particles in Power-Law Fluids

Experimental and numerical estimation of wall effect and drag coefficient on hollow frustum settling in annular and non-annular channels

Experimental and numerical investigation of cylinder rising in co-current turbulent air pipe flow: Application in pneumatic ice drilling

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