Fluid flow characterisation in randomly packed microscale porous beds with different sphere sizes using micro-particle image velocimetry

Lu, Xianke; Zhao, Yuyuan; Dennis, David

doi:10.1016/j.expthermflusci.2020.110136

Cited by 13 publications

(5 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This indicates that the preferred path the fluid takes through the metal foam structure is not different in the different flow regimes. This is similar result from Lu et al (2020). Fig.…”

Section: Resultssupporting

confidence: 88%

PIV measurement of complex flow characteristics in open-cell metal foam replica

Kim¹,

Kim²,

Hosseini³

et al. 2021

ISPIV21

View full text Add to dashboard Cite

Time-resolved 2-D particle image velocimetry was used to study on turbulent flow characteristics inside an open-cell metal foam under the laminar and turbulent inlet conditions. A study on the effect of Reynolds number was conducted with different three channel Reynolds numbers, 1000, 5000 and 10000. Uniform upstream flow is divided by the pore network of metal foam and it is found that there are flow disturbances induced by metal foam structure even at a laminar inlet condition. It is confirmed that there is a similarity of the preferred flow path flows take regardless of Reynolds number.

show abstract

“…This indicates that the preferred path the fluid takes through the metal foam structure is not different in the different flow regimes. This is similar result from Lu et al (2020). Fig.…”

Section: Resultssupporting

confidence: 88%

PIV measurement of complex flow characteristics in open-cell metal foam replica

Kim¹,

Kim²,

Hosseini³

et al. 2021

ISPIV21

View full text Add to dashboard Cite

show abstract

“…The packing form with a proper sub-channel can reduce the pressure drop and improve the heat transfer performance compared to randomly packing the particles [147][148][149]. Additionally, size distributions have a remarkable effect on the overall performance of the packed bed, and smaller particles fixed close to the tube wall are beneficial for restraining the Wall Effect and improving heat transfer [150,151].…”

Section: Innovative Design Methodsmentioning

confidence: 99%

A Review of Radiative Heat Transfer in Fixed-Bed Particle Solar Receivers

Dai,

Huangfu,

Wang

et al. 2023

Sustainability

View full text Add to dashboard Cite

A highly efficient receiver is required because re-radiation loss increases dramatically with increased working temperature. Among a large number of receivers, the fixed-bed Particle Solar Receiver (PSR) represents a new pathway to high temperature with maximum overall thermal efficiency. The incoming solar radiation can penetrate deeper into the fixed-bed PSR filled with semi-transparent quartz and ceramic particles (spheres or Raschig rings), resulting in an increased volumetric effect. Reports show that an optimized PSR can realize overall receiver efficiency of around 92% at outlet temperatures above 1000 K, and achieve the annual temperature above 1000 K over 65% annual operating hours integrated with a concentrated solar power (CSP) system. To fully understand radiative heat transfer characteristics and provide deep insight into thermal efficiency, radiation energy is classified as incident solar radiation and radiative heat exchange in two parts. The transfer mechanism, the solution method and the progress of the investigation for each section are summarized and discussed in detail. Then, challenges and future directions, including an innovative design method, an improved experimental approach and an effective simulation method are proposed to put forward this receiver to be a preferred substitute in advanced, high-temperature power cycles.

show abstract

“…Ltd., is used for micromodel fabrication. Fluorescent polystyrene particles (diameter, d p = 1 μm and density, ρ p = 1.055 g/cm 3 ) are used at a low concentration ranging from 0.04%−0.06% (by volume) to track the flow within the porous micromodel. Fluorescent polystyrene tracer particles (Thermofisher scientific) are selected based on the three parameters: particle response time (τ s ), settling velocity (ν s ), and mean displacement error due to Brownian motion (ε B ).…”

Section: Materials and Methodologymentioning

confidence: 99%

“…Measurements confirmed the average particle size of silica nanoparticles to be 15 nm. Spinning drop tensiometer (Kruss SITE-100) is used to measure dynamic interfacial tension between crude oil (density, 0.896 g/cm 3 ) and silica nanofluid (density, 1.02 g/cm 3 ). Wettability is measured based on the contact angle using a goniometer.…”

Section: Materials and Methodologymentioning

confidence: 99%

“…The application of fluid flow through porous media is common in numerous fields such as enhanced oil recovery (EOR), CO 2 sequestration, and groundwater remediation, to name a few. − However, the knowledge of flow behavior through the porous media is not yet fully developed. It is critical to understand the displacement process at micro and macro scales within a porous media to optimize the EOR process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Micro-particle Image Velocimetry Measurements of Pore-Scale Velocity Field during Nanoparticle-Assisted Alkaline Flooding

2021

View full text Add to dashboard Cite

We report experimental investigations on the porescale flow dynamics during two-phase flow in a micromodel using the microscale particle image velocimetry (μ-PIV) technique. The combined effect of alkali (sodium carbonate) and nanoparticles (silica) on oil recovery is investigated using interfacial tension, rheology, emulsification, contact angle, chemical flooding, and micro-PIV measurements. Dynamic interfacial tension (IFT) measurement shows that silica nanoparticles significantly reduce the interfacial tension between crude oil and nanofluid. Reduction in IFT results in a stable emulsion. Microscopic studies reveal that the silica nanoparticle reduces the average droplet size to 3 μm in the emulsion by covering oil droplets all over, resulting in the reduced coalescence of droplets. Silica nanoparticles significantly altered the wettability by reducing the contact angle. To understand the microscopic displacement mechanism of silica nanofluidassisted alkaline flooding, the quantitative measurement of the pore-scale velocity field in a 2D porous micromodel was performed, and flow patterns were visualized. During drainage experiments with an alkaline solution, viscous fingering is observed. On the other hand, during the imbibition experiments, as crude oil interacts with the silica nanofluid, a stable emulsion is formed in the porous medium resulting in a regular piston-like displacement. The results reported in this study show that silica nanoparticles mixed with alkali solution help in IFT reduction, emulsification, wettability alteration, and mobility control by rheology modification, which assists the stable displacement of oil from the porous medium.

show abstract

Fluid flow characterisation in randomly packed microscale porous beds with different sphere sizes using micro-particle image velocimetry

Cited by 13 publications

References 59 publications

PIV measurement of complex flow characteristics in open-cell metal foam replica

PIV measurement of complex flow characteristics in open-cell metal foam replica

A Review of Radiative Heat Transfer in Fixed-Bed Particle Solar Receivers

Micro-particle Image Velocimetry Measurements of Pore-Scale Velocity Field during Nanoparticle-Assisted Alkaline Flooding

Contact Info

Product

Resources

About