In the past, the practical application of double diffusive convection was primarily limited to oceanographic research; however, in more recent years, it has become apparent that it has applications in astrophysics, engineering, and geology.
Double-diffusive convection is a mixing process that occurs when two fluid components diffuse at different rates interact. Upwelling of nutrients and vertical heat and salt transport in oceans, for example.
Source:
Animasaun I. L. (2016). Double diffusive unsteady convective micropolar flow past a vertical porous plate moving through binary mixture using modified Boussinesq approximation. Ain Shams Engineering Journal 7(2), 755 – 765. http://dx.doi.org/10.1016/j.asej.2015.06.010
There are numerous practical applications of double-diffusive convection such as:
geothermal energy, the processing of foods, electronic cooling equipment, and the applications of solar energy and building heating
See this paper for more details
Khalaf HI, Saleem KB, Al-Farhany K, Al-Kouz W (2021) Double-diffusive Air-CO2 mixture flow in a staggered cavity with numerous concave lower wall aspect ratios. Eur Phys J Plus 136: https://doi.org/10.1140/epjp/s13360-021-01486-w
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