| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Simmons, Mark
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Design of slurries for 3D printing of sodium-ion battery electrodescitations
- 2023Comparison between RANS and 3D-PTV measurements of Newtonian and non-Newtonian fluid flows in a stirred vessel in the transitional regimecitations
- 2023Thermomechanical Responses of Microcracks in a Honeycomb Particulate Filter
- 2022Rheology and structure of lithium‐ion battery electrode slurriescitations
- 2021Understanding the effects of processing conditions on the formation of lamellar gel networks using a rheological approachcitations
- 2021Lagrangian investigations of a stirred tank fluid flow using 3D-PTVcitations
- 2020Ironmaking and Steelmaking Slags As Sustainable Adsorbents For Industrial Effluents And Wastewater Treatmentcitations
- 2017Investigating the impact of operating conditions on the extent of additive mixing during thermoplastic polymer extrusioncitations
- 2016Agglomeration in counter-current spray drying towers. Part A: Particle growth and the effect of nozzle heightcitations
- 2016A comparison of methods for in-situ discrimination of imaged phase boundaries using Electrical Capacitance Tomography
- 2016The impact of process parameters on the purity and chemical properties of lignin extracted from miscanthus x giganteus using a modified organosolv method
- 2013An Assessment of the Influence of Gas Turbine Lubricant Thermal Oxidation Test Method Parameters Towards the Development of a New Engine Representative Laboratory Test Methodcitations
- 2013Kinetics of metals adsorption in acid mine drainage treatment with blast furnace slag
- 2009Influence of surfactant upon air entrainment hysteresis in curtain coatingcitations
- 2007Influence of vicosity and impingement speed on intense hydrodynamic assist in curtain coatingcitations
- 2006Hysteresis and non-uniqueness in the speed of onset of instability in curtain coatingcitations
- 2006Influence of the flow field in curtain coating onto a prewet substratecitations
Places of action
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article
Influence of the flow field in curtain coating onto a prewet substrate
Abstract
The onset of air entrainment for curtain coating onto a surface prewetted with the coating fluid was studied. The substrate used was a polished, scraped steel wheel and coating was performed over ranges of dimensionless parameters observed in commercial coating processes (Reynolds number, 0.14 < Re=rho Q/mu < 33.02; Capillary number, 0.19 < Ca=mu U/sigma < 25.07). The substrate velocity for the onset of air entrainment was obtained as a function of the curtain flow rate per unit width of curtain (1 < Q < 9 cm(2) s(-1)), fluid dynamic viscosity (0.0326 <mu < 0.878 Pa s), curtain height (0.035 < h < 0.095 m), and thickness of the prewet film (1x10(-7)< c < 3x10(-5) m). A remarkable and strong dependence of the onset of air entrainment on curtain flow rate was observed (hydrodynamic assist) and the general features of the hydrodynamics were very similar to those observed for previous works onto dry substrates. However, the presence of the prewet film led to higher maximum substrate velocities at the onset of air entrainment than observed for dry substrates. For high liquid viscosities, the air entrainment curve bifurcates; under these conditions, the maximum substrate velocity is no longer inversely proportional to the fluid viscosity and stable coating is possible at higher substrate velocities than would be predicted by conventional theory. This "intense assist" exhibits a complex relationship with the prewet film thickness. The results presented in this paper demonstrate that hydrodynamic assist is not exclusive to wetting, but is a generic phenomenon of fluid flows. (c) 2006 American Institute of Physics.