Flow of deep eutectic solvent-simulated fuel in circular channel: Part I—flow patterns and pressure drop

Ani, Zainab Al; Al-Wahaibi, Talal; Mjalli, Farouq S.; Al-Hashmi, A.R.; Abu‐Jdayil, Basim

doi:10.1016/j.cherd.2016.12.016

Cited by 8 publications

(8 citation statements)

References 38 publications

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“…The pressure drop was low in annular flow but was significantly higher when dispersed flow occurred. The same results were observed when the pressure drop of deep eutectic solvent-fuel in a 1.2-mm channel was investigated . A summary of all the relevant literature on the pressure drop of the liquid–liquid two phase systems is given in Table , which gives information on the used systems, junctions, and channel specifications.…”

Section: Pressure Dropsupporting

confidence: 64%

“…They have represented that, for all flow conditions, the Y junction always led to the formation of parallel flow, whereas slug flow was developed in the T junction. However, other researchers have reported that the shape of the junction, whether T, Y, or perpendicular T, did not appear to have a major influence on the developed flow patterns. , On the other hand, junction diameter was noticed to have a high impact on flow development. Kashid and Agar, for example, examined the impact of the Y-junction diameter on flow patterns; they used a circular capillary of 0.75 mm diameter and Y-junctions with diameters varying from 0.25 mm to 1 mm.…”

Section: Flow Patternsmentioning

confidence: 86%

“…Hence, researchers have been seeking to fabricate effective microstructure devices that can operate using as low of a pressure drop as possible. Despite its importance, the number of reported studies on liquid–liquid two-phase pressure drop in microchannels has been so far very limited. ,,,,,,,, These studies have observed that the pressure drop is most highly influenced by the flow patterns and the velocity and properties of the fluids, as well as by the size and roughness of the channels used. Before elaborating on the findings of different researchers, note that, to measure the pressure drop of a two-phase system, a differential pressure transducer is usually used.…”

Section: Pressure Dropmentioning

confidence: 99%

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A Review on the Hydrodynamics of the Liquid–Liquid Two-Phase Flow in the Microchannels

Al-Azzawi

Mjalli

Husain

et al. 2021

Ind. Eng. Chem. Res.

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The ability of small and microchannels to enhance mass transfer, reduce diffusional limitations, and create a safer process has made them the best choice for process intensification. This study provides a review of the available experimental and computational literature on the hydrodynamics of liquid−liquid two-phase flow in microscale, namely, flow regimes, pressure drop, and flow structure. When two immiscible liquids flow in small channels, various flow patterns can be observed, with the development of those patterns being influenced by several parameters, such as the geometry of the mixing junction and channel, the channel material, the fluids properties, and the orientation of the flow. As part of the flow patterns observations and measurement, the velocity fields and internal circulation reported in the literature were reviewed in the context of the microparticle velocimetry (μPIV) implementation. Also, relevant to our study is the literature outlining, pressure drop, and the available models that have been used to predict it. These models are discussed in detail with special reference to flow patterns and fluids viscosities. Moreover, the numerical studies results using computational fluid dynamics (CFD) have also been reviewed and discussed, in terms of the validity of the simulation and the different parameters affecting slug formation and flow patterns. Each section of the discussion also points out the gaps in the research and proposes future work that could further develop the technology under a review of liquid−liquid two-phase flow in microchannels.

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Section: Pressure Dropsupporting

confidence: 64%

Section: Flow Patternsmentioning

confidence: 86%

Section: Pressure Dropmentioning

confidence: 99%

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A Review on the Hydrodynamics of the Liquid–Liquid Two-Phase Flow in the Microchannels

Al-Azzawi

Mjalli

Husain

et al. 2021

Ind. Eng. Chem. Res.

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“…Table reports different studies of the desulfurization process using microchannels. Al Ani et al , investigated the EDS process and its flow pattern in a microchannel as the first work in this field. According to their study, drop flow, stratified wavy flow, slug flow, plug flow, annular flow, intermittent flow, and dispersed flow were observed in the fuel/solvent two-phase system.…”

Section: Introductionmentioning

confidence: 99%

“…Flow patterns in the microchannel play a major role in the heat and mass transfer. The main flow patterns observed in the microchannels are the slug flow, the droplet flow, the annular flow, and the parallel flow. − Based on our knowledge, there are fewer investigations on the flow pattern maps of liquid–liquid flow in microchannels compared to gas–liquid flow. Moreover, as reported in Table , there is a lack of information on the flow pattern of the EDS process in the microchannels. ,− It should be noted that the previous articles did not provide a sufficient illustration of the various flow regime types.…”

Section: Introductionmentioning

confidence: 99%

Extractive Desulfurization in Microchannel Contactors Using Deep Eutectic Solvents: Optimization Using Central Composite Design (CCD) and Flow Pattern Mapping

Mahdavi,

Sobati,

Movahedirad

2023

Energy Fuels

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In the present study, the optimization of extractive desulfurization in the microchannels was investigated using a deep eutectic solvent (DES). The influence of some operating and microchannel geometrical parameters, including the initial sulfur concentration of fuel, the length of the microchannel, the DES flow rate, and the ratio of fuel to DES flow rate (RF/D), on sulfur removal was investigated using response surface methodology (RSM). Moreover, the flow pattern map in the microchannels was investigated. In this regard, different flow patterns of slug, lengthy slug, smooth annular, throat annular, wavy annular, and droplet were observed in the microchannels applied in the extractive desulfurization (EDS) process. Besides, the effects of the inertial force, interfacial tension force, and viscosity force on the different flow patterns were discussed by analyzing the capillary number, the Weber number, and the Reynolds number. It was found that the most effective regime in the EDS process in the microchannel is the slug flow pattern in which the interfacial tension force (6 × 10 −5 < Weber number < 0.82767) is dominant. Based on the analysis of the RSM proposed model, it was also found that the RF/D is the main influential parameter on sulfur removal, and 73.2% sulfur removal was achieved in the microchannel under the optimum conditions in a very short residence time of 2.5 s. The results also confirmed the capability of this EDS process for sulfur removal from real diesel fuel.

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Flow patterns analysis of conventional versus eutectic liquid solvent in different circular small channel diameters

et al. 2020

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Flow of deep eutectic solvent-simulated fuel in circular channel: Part I—flow patterns and pressure drop

Cited by 8 publications

References 38 publications

A Review on the Hydrodynamics of the Liquid–Liquid Two-Phase Flow in the Microchannels

A Review on the Hydrodynamics of the Liquid–Liquid Two-Phase Flow in the Microchannels

Extractive Desulfurization in Microchannel Contactors Using Deep Eutectic Solvents: Optimization Using Central Composite Design (CCD) and Flow Pattern Mapping

Flow patterns analysis of conventional versus eutectic liquid solvent in different circular small channel diameters

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