NanoRound: A benchmark study on the numerical approach in nanofluids' simulation

Minea, Alina Adriana; Buonomo, Bernardo; Burggraf, Jonas; Ercole, Davide; Karpaiya, Kavien Raaj; Pasqua, Anna di; Sekrani, Ghofrane; Steffens, J.; Tibaut, Jan; Wichmann, Niklas; Farber, Peter; Huminic, Angel; Huminic, Gabriela; Mahu, Razvan; Manca, Oronzio; Oprea, Cristina; Poncet, Sébastien; Ravnik, Jure

doi:10.1016/j.icheatmasstransfer.2019.104292

Cited by 54 publications

(16 citation statements)

References 33 publications

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“…It may underline here that all the fluids were modelled as single-phase fluids with known thermophysical properties. This is a good approach, especially in the case of experimentally determined properties, as was demonstrated for nanofluids in the only numerical benchmark study, as can be seen from Minea et al [85]. Of course, other techniques are available, as multiphase model, but no relevant studies were identified in the open literature, where most of the simulations involve calculated properties, based on the nanofluids' empirical models.…”

Section: Numerical Work On Convective Heat Transfer Of Ils and Infs (For Both Ils And Infs)mentioning

confidence: 99%

Ionic Liquids-Based Nanocolloids—A Review of Progress and Prospects in Convective Heat Transfer Applications

Minea

Murshed

2021

Nanomaterials

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Ionic liquids are a new and challenging class of fluids with great and tunable properties, having the capability of an extensive area of real-life applications, from chemistry, biology, medicine to heat transfer. These fluids are often considered as green solvents. Several properties of these fluids can be enhanced by adding nanoparticles following the idea of nanofluids. These ionic liquids-based nanocolloids are also termed in the literature as ionanofluids or nanoparticles-enhanced ionic liquids. This review summarizes the findings in both areas of ionic liquids and ionic liquids nanocolloids (i.e., ionic liquids with nanoparticles in suspension) with direct applicability in convective heat transfer applications. The review presents in a unified manner the progress and prospects of ionic liquids and their nanocolloids from preparation, thermophysical properties and equally experimental and numerical works. As the heat transfer enhancement requires innovative fluids, this new class of ionic liquids-based nanocolloids is certainly a viable option, despite the noticed drawbacks. Nevertheless, experimental studies are very limited, and thus, extensive experiments are needed to elucidate ionic liquids interaction with nanoparticles, as well as their behavior in convective heat transfer.

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Section: Numerical Work On Convective Heat Transfer Of Ils and Infs (For Both Ils And Infs)mentioning

confidence: 99%

Ionic Liquids-Based Nanocolloids—A Review of Progress and Prospects in Convective Heat Transfer Applications

Minea

Murshed

2021

Nanomaterials

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“…Droplet D32 diameters from experiment and numerical simulation will also be compared and discussed in the next section to further validate our simulation. More valuable information about the numerical approach and validation can be found in [31], in which Minea et al provide good guidance on how to rigorously develop a numerical approach and how to validate the grid and the model.…”

Section: Parametermentioning

confidence: 99%

Evaluation of the Performance of the Drag Force Model in Predicting Droplet Evaporation for R134a Single Droplet and Spray Characteristics for R134a Flashing Spray

Zhou¹,

Zhu²,

Lu³

et al. 2019

Energies

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Drag force plays an important role in determining the momentum, heat and mass transfer of droplets in a flashing spray. This paper conducts a comparative study to examine the performance of drag force models in predicting the evolution of droplet evaporation for R134a single droplet and spray characteristics for its flashing spray. The study starts from single moving R134a droplet vaporizing in atomispheric environment, to a fully turbulent, flashing spray caused by an accidental release of high-pressure R134a liquid in the form of a straight-tube nozzle, using in-house developed code and a modified sprayFoam solver in OpenFOAM, respectively. The effect of the nozzle diameter on the spray characteristics of R134a two-phase flashing spray is also examined. The results indicate that most of the drag force models have little effect on droplet evporation in both single isolated droplet modelling and fully two-phase flashing spray simulation. However, the Khan–Richardson model contributes to different results. In particular, it predicts a much different profile of the droplet diameter distribution and a much lower droplet temperature in the radial distance. The nozzle diameter has a significant impact on the flashing spray. A smaller diameter nozzle leads to more internse explosive atomization, shorter penetration distance, lower droplet diameter and velocity, and a faster temperature decrease.

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“…The effects of Knudsen number and thermal relaxation time on the transient behaviors were discussed in detail. Minea et al [31] developed a comprehensive and applicable simulation method of nanofluid flow, and presented comparisons of different simulation approaches. The results showed that gravity is a key factor that must be considered in the simulation of nanofluid flow.…”

Section: Introductionmentioning

confidence: 99%

Transient Flow of a Horizontal Well with Multiple Fracture Wings in Coalbed Methane Reservoirs

et al. 2020

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Horizontal wells with multi-stage fractures have been widely used to improve coalbed methane (CBM) production from coalbed methane reservoirs. The main focus of this work is to establish a new semi-analytical method in the Laplace domain and investigate the transient pressure behavior in coalbed methane reservoirs. With the new semi-analytical method, flow regimes of a multi-fractured horizontal well in coalbed methane reservoirs were identified. In addition, the sensitivities of fracture conductivity, diffusion model, storability ratio, inter-porosity flow coefficient, adsorption index, fracture spacing, fracture asymmetry, non-planar angle, and wellbore storage were studied. Results indicate that six characteristic flow regimes can be identified for multi-fractured horizontal wells in coalbed methane reservoirs, which are bilinear flow, first linear flow, desorption-diffusion flow, first pseudo-radial flow, second linear flow, and second pseudo-radial flow. Furthermore, the sensitivity analysis shows that the early flow is mainly determined by the fracture conductivity, the asymmetry factor, the non-planar angle, and the wellbore storage; while the desorption-diffusion flow regime is mainly influenced by the diffusion model, the storability ratio, the inter-porosity flow coefficient, the adsorption index, and the fracture spacing. Our work can provide a deep insight into the fluid flow mechanism of multi-fractured horizontal wells in coalbed methane reservoirs.

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NanoRound: A benchmark study on the numerical approach in nanofluids' simulation

Cited by 54 publications

References 33 publications

Ionic Liquids-Based Nanocolloids—A Review of Progress and Prospects in Convective Heat Transfer Applications

Ionic Liquids-Based Nanocolloids—A Review of Progress and Prospects in Convective Heat Transfer Applications

Evaluation of the Performance of the Drag Force Model in Predicting Droplet Evaporation for R134a Single Droplet and Spray Characteristics for R134a Flashing Spray

Transient Flow of a Horizontal Well with Multiple Fracture Wings in Coalbed Methane Reservoirs

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