A5015146632- Fluid Dynamics and Mixing
- Innovative Microfluidic and Catalytic Techniques Innovation
- Fluid Dynamics and Heat Transfer
- Microfluidic and Capillary Electrophoresis Applications
- Fluid Dynamics and Thin Films
- Heat Transfer and Boiling Studies
- Minerals Flotation and Separation Techniques
- Rheology and Fluid Dynamics Studies
- Electrohydrodynamics and Fluid Dynamics
- Particle Dynamics in Fluid Flows
- Lattice Boltzmann Simulation Studies
- Extraction and Separation Processes
- Cyclone Separators and Fluid Dynamics
- Reservoir Engineering and Simulation Methods
- Flow Measurement and Analysis
- Surface Modification and Superhydrophobicity
- Granular flow and fluidized beds
- Radioactive element chemistry and processing
- Enhanced Oil Recovery Techniques
- Ionic liquids properties and applications
- Petroleum Processing and Analysis
- Analytical Chemistry and Chromatography
- Pickering emulsions and particle stabilization
- Heat Transfer and Optimization
- Fluid Dynamics and Turbulent Flows
University College London
2016-2025
South Thames College
2018-2022
China University of Petroleum, Beijing
2017
Institut de Mécanique des Fluides de Toulouse
2017
École Nationale Supérieure d'Électrotechnique, d'Électronique, d'Informatique, d'Hydraulique et des Télécommunications
2017
Institut National Polytechnique de Toulouse
2017
Biochemical Society
2014
UCL Australia
2011-2013
Carl Zeiss (Germany)
2005
Eindhoven University of Technology
2005
Computational fluid dynamics simulations are used to study the mixing characteristics of a microscale mixer for gaseous flow as function various operating and design parameters. The device is based on T configuration gases different viscosities employed. Simulations show that length increases with speed also influenced by aspect ratio. Altering angle between inlet channels does not significantly affect performance, whilst throttling considerably decreases length. results compared Fourier...
A variety of gas−liquid microchannel reactors have been developed so far, using different contacting principles. Some devices utilize continuous-phase (i.e., nondispersed separate phases with large specific interfaces). Among these are microstructured falling film, overlapping channel, and mesh reactors. Dispersed-phase is obtained when one the interdispersed into other phase. Regular flow patterns provided by segmented (Taylor) in a single or numbered-up versions such as microbubble column;...
In this paper the effect of channel size on mass transfer characteristics liquid–liquid plug flow was investigated for capillaries with internal diameter ranging from 0.5 to 2 mm. The extraction {UO2}2+ ions nitric acid solutions into TBP/IL mixtures, relevant spent nuclear fuel reprocessing, studied different residence times, dispersed phase fractions, and mixture velocities. It found that efficiencies increased as decreased. For a given length all sizes, an increase in velocity decreased...
Abstract Reduced-order modelling and low-dimensional surrogate models generated using machine learning algorithms have been widely applied in high-dimensional dynamical systems to improve the algorithmic efficiency. In this paper, we develop a system which combines reduced-order with novel data assimilation (DA) technique used incorporate real-time observations from different physical spaces. We make use of local smooth functions link space encoded variables one current perform variational...
Circulation patterns and mixing characteristics within water plugs in liquid/liquid segmented flow were investigated by means of micro-Particle Image Velocimetry. Experiments carried out a glass microchannel with circular cross-section 100 μm radius using [C4mim][NTf2] ionic liquid as the carrier fluid. A T-junction was used inlet, while mixture velocities varied from 0.0028 m/s to 0.0674 m/s. Two main circulation vortices found at intermediate two additional secondary appeared plug front....
The hydrodynamic properties of plug flow were investigated in small channels with 0.5‐, 1‐, and 2‐mm internal diameter, for an ionic liquid/aqueous two‐phase system the aqueous phase forming dispersed plugs. Bright field Particle Image Velocimetry combined high‐speed imaging used to obtain length, velocity, film thickness, acquire velocity profiles within Plug length decreased mixture while constant it increased channel size. increasing thickness was predicted reasonably well Ca > 0.08 by...
Drop formation in a microfluidic flow-focusing device (cross-junction) was studied absence and presence of one two ionic surfactants. Four different flow regimes: squeezing, dripping, jetting, threading were observed line with existing literature. The effect surfactant on the transition between regimes shown to depend upon value critical micelle concentration correlates dynamic surface tension. length channel increased as ratio rate dispersed continuous phase, φ, increased. For drops smaller...
The hydrodynamic characteristics of liquid-liquid plug flow were studied in microchannels with 0.2 and 0.5 mm ID both experimentally numerically. For the experiments high speed imaging bright field micro-Particle Image Velocimetry used, while numerical simulations based on volume-of-fluid (VOF) method. two immiscible liquids a 1 M HNO3 aqueous solution which formed dispersed plugs mixture n-octyl(phenyl)-N,N-diisobutylcarbamoylmethyphosphine oxide (CMPO) 1.2 Tributylphosphate (TBP) ionic...
The formation of an aqueous droplet in organic continuous phase was studied experimentally inside a flow-focusing microchannel (190 μm × 195 μm: depth width) the presence surfactants. A low viscosity silicone oil (0.0046 Pa s) used as and mixture 48% w/w water 52% glycerol dispersed phase. Two ionic surfactants, C12TAB (50 mM) C16TAB (5 were added phase, at concentrations above CMC values. Four regimes drop identified, namely squeezing, dripping, jetting threading, whose boundaries changed...
Improving surfactant-laden microdroplet size prediction using data-driven methods.