Experimental investigation of the settling velocity of spherical particles in Power-law fluids using particle image shadowgraph technique

Shahi, Shivam; Kuru, Ergün

doi:10.1016/j.minpro.2016.06.002

Cited by 12 publications

(3 citation statements)

References 16 publications

(33 reference statements)

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“…In order to gain a better understanding of the mechanics of the transfer process through blister generation and droplet formation, the transfer is visualized using shadowgraph imaging, a technique that has been widely used as a tool for particle flow visualization. It relies on the general principle that a shadow is cast wherever there is a significant optical density gradient in the medium through which light passes [23]. In this way, a shadow image can be captured at the focal plane of a conventional complementary metal-oxide-semiconductor (CMOS)-camera.…”

Section: Methodsmentioning

confidence: 99%

Blister-Actuated LIFT Printing for Multiparametric Functionalization of Paper-Like Biosensors

et al. 2019

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Laser induced forward transfer (LIFT) is a flexible digital printing process for maskless, selective pattern transfer, which uses single laser pulses focused through a transparent carrier substrate onto a donor layer to eject a tiny volume of the donor material towards a receiver substrate. Here, we present an advanced method for the high-resolution micro printing of bio-active detection chemicals diluted in a viscous buffer solution by transferring droplets with precisely controllable volumes using blister-actuated LIFT (BA-LIFT). This variant of the LIFT process makes use of an intermediate polyimide layer partially ablated by the laser pulses. The expanding gaseous ablation products lead to blisters in the polyimide and ejection of droplets from the subjacent viscous solution layer. A relative movement of donor and receiver substrates for the transfer of partially overlapping pixels is realized with a custom-made positioning system. Using a specially developed donor ink containing bio-active components presented method allows to transfer droplets with well controllable volumes between 20 fL and 6 pL, which is far more precise than other methods like inkjet or contact printing. The usefulness of the process is demonstrated by locally functionalizing laser-structured nitrocellulose paper-like membranes to form a multiparametric lateral flow test. The recognition zones localized within parallel micro channels exhibit a well-defined and homogeneous color change free of coffee-ring patterns, which is of utmost importance for reliable optical readout in miniature multiparametric test systems.

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Section: Methodsmentioning

confidence: 99%

Blister-Actuated LIFT Printing for Multiparametric Functionalization of Paper-Like Biosensors

et al. 2019

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“…The sediment removal efficiency of the vortex settling/desilting basin was measured by systematically varying the inlet discharge, underflow removal discharge, sediment size, underflow outlet orifice diameter, and canal width. The sediment trap efficiency is defined as the ratio of deposited sediment to the total sediment inflow for a given period within the sediment trap economic operation [17].…”

Section: Accessories Of the Experimental Set-upmentioning

confidence: 99%

Experiments of Geometric Shape of Sediment Trap Rectangular and Vortex Settling Desilting Basin

Isnaeni¹

2023

GEOMATE

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Modernising irrigation is a top priority in Indonesia, with managing irrigation water supply services effectively and efficiently, particularly in providing value to farmers. Sediment traps are an essential component of the head structure in irrigation. Vortex Settling Desilting Basins (VSDB) have inherent advantages over other types of sediment-removal desilting basins. The experiments were conducted under three different discharge scenarios, and three-dimensional flow velocities were measured. The streamlines and velocity vectors in the horizontal superimposed sections were drawn and analysed then for the incipient motion of sediment. This study presents the results of experimental research that was accomplished in a VSDB to observe the slope orifice chamber with 1:10, 1:5 and 1:2. The method used numerical methods with CFD simulations by Ansys R.21 2020 (student version) to approach geometric shapes then laboratory experiments with a model scale 1:40 prototype to an undistorted 3-D physical model. Comparing the magnitude of the velocity and streamlined path in horizontal sections with the occurrence of secondary in radial sections revealed that the flow in the vortex direction plays a higher role in the removal efficiency of the desilting basin. As a result, by comparing the performance of rectangular shapes with the same hydraulic parameters, the slope orifice chamber of 1:5 is more effective in case of deposition and removal than another slope chamber. Eleven times running, it settled 84.90% of the sediment fraction and left a sediment fraction of 12.10%, higher than the effectiveness of the performance of sediment traps with a rectangular shape.

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“…As a result, several groups have sought to understand and improve on different aspects of proppant behavior. In particular, researchers have investigated the deposition and transport properties of proppant in different fluid rheologies, [4][5][6][7][8] the role of proppant embedment and damage, [9][10][11] and the behavior of proppant mixtures and the addition of exotic particles. [12][13][14] However, it is difficult to monitor the sub-fracture scale behavior of proppant without introducing materials that would affect the physical properties of either the proppant pack or the host rock.…”

Section: Introductionmentioning

confidence: 99%

Non-invasive measurement of proppant pack deformation

Walsh

Smith

Carroll

et al. 2016

International Journal of Rock Mechanics and Mining Sciences

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a b s t r a c tIn this paper, we describe a method to non-invasively study the movement of proppant packs at the subfracture scale by applying three-dimensional digital image correlation techniques to X-ray tomography data. Proppant movement is tracked in a fractured core of Marcellus shale placed under a series of increasing confining pressures up to 10,000 psi. The analysis reveals the sudden failure of a region of the proppant pack, accompanied by the large-scale rearrangement of grains across the entire fracture surface. The failure of the pack coincides with the appearance of vortex-like grain motions similar to features observed in biaxial compression of two dimensional granular assemblies

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Experimental investigation of the settling velocity of spherical particles in Power-law fluids using particle image shadowgraph technique

Cited by 12 publications

References 16 publications

Blister-Actuated LIFT Printing for Multiparametric Functionalization of Paper-Like Biosensors

Blister-Actuated LIFT Printing for Multiparametric Functionalization of Paper-Like Biosensors

Experiments of Geometric Shape of Sediment Trap Rectangular and Vortex Settling Desilting Basin

Non-invasive measurement of proppant pack deformation

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