Electroosmotically actuated peristaltic-ciliary flow of propylene glycol + water conveying titania nanoparticles

Abstract

The main focus of this article is to mathematically formulate the microfluidics-based mechanical system for nanofluids. A 50:50 mixture of propylene glycol (PG) and water is used as a heat transfer fluid because of its tremendous anti-freezing properties, and nontoxicity and it is safe to be utilized at the domestic level. Titanium dioxide (titania) nanoparticles are suspended in the working fluid to enhance its heat transfer ability. The fluid flow is induced by electroosmosis in a microtube, which is further assisted by cilia beating. The impacts of Joule heating and non-linear thermal radiation are also considered. The simplification of the dimensionless system is done under lubrication theory and the Debye-Hückel linearization principle. The nonlinear system of equations is executed for a numerical solution by adopting the symbolic mathematical software Maple 17 using the command “dsolve” along with the additional command “numeric” to get the numerical solution. This command utilizes a low-ordered method along with accuracy-enhancing schemes such as the deferred correction technique and Richardson extrapolation to get a numerical answer of desired accuracy, where we can choose the accuracy level and mesh points according to our requirements. The detailed analysis of results obtained from the numerical treatment of the considered problem indicates that the efficiency of the PG + water enhances due to the suspension of the nanoparticles and heat is rapidly removed from the system. Further, the velocity of the fluid is augmented by decreasing the thickness of the electric double layer and raising the strength of the electric field in the forwarding direction.

Flow Characteristics of Casson Nanofluid Over a Moving Wedge

“…Over an inclined cylinder the flow attributes of a carbon nanotube based hybrid nanofluid is studied by Mishra and Upreti (15) . Aspects of electroosmotics are analysed by Akbar NS and research group (16)(17)(18) . The study of elevated stretched cylinder and peristaltic flow is carried by Akbar et al (19,20) .…”

Numerical exploration of electroosmotically regulated squeezing rotating flow of TiO2/water nanofluid in a parallel plate channel under triple diffusion convection

“…Their findings show that velocity and stress components depend upon rotation speed and Debye number. Akram and Noreen [9] investigated the combined phenomenon of peristalsis and electroosmosis and analyzed the behavior of TiO 2 /water nanofluids driven by this combined phenomenon. Khan et al [10] electroosmotic phenomenon in assistance of peristaltic motion as a driving force for water-based carbon nanotube fluid through a microtube.…”

Study on the heat transfer performance of heat exchange surfaces and flow channels under negative pressure

“…In addition to structural improvement, it is also an effective method to add nanoparticles to the cooling medium and form an efficient cooling medium. Akram et al 7 used a mixture of propylene glycol and water as a heat transfer medium. Numerical simulation results show that this mixture of nanofluids allows heat to be rapidly removed from the system.…”