Droplet Dynamics towards Smart Surfaces
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A quasi-universal framework to understand the interplay of surface physicochemical properties and fluid properties.
FFT (Fast Fourier Transform) has been used to demarcate the effect of inherent properties and parameters on the oscillation dynamics.
A lumped-parameter-based model has been proposed to study a wide variety of droplets impacting heterogeneous surface study.
Physics of Fluids, https://doi.org/10.1063/5.0161192
Potential Applications:
Water harvesting, droplet cooling, self-cleaning surfaces, anti-icing surfaces etc.
Spring Constant varying with Weber number and Reynolds number for droplet impacting textured surfaces.
Multiphase Flow Interacting Smart Surfaces
Cross jet evolution under the influence of wettability and degree of confinement showing distinct flow regimes namely jetting, threading, and dripping.
Bubble Dynamics within confinements
The surface was treated with superhydrophobic spray
Nucleating boiling is observed to take place in minichannel heat sinks
The heat transfer performance is observed to decrease due to the presence of the bubbles
The bubbles are observed to be displaced at high flow rates
Hydrovoltaic energy generation
PSSA membrane-based energy generation.
Energy from mist, moisture, and raindrops.
Use of different nanoparticles and chemicals may enhance the generation.
Jets in Cross-Flow
At a low-velocity ratio, the water jet in air cross-flow may undergo instability-driven breakup into droplets.
Surface microstructures may influence the breakup process.
This is beneficial in terms of a higher water removal rate because droplets are easily transported out of the microconfinement by airflow afterwards.
APL Energy, https://doi.org/10.1063/5.0171953
Get in touch at nilanjanmndl3@gmail.com
Get in touch at nilanjanmndl3@gmail.com
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