Journal
NANOMATERIALS
Volume 12, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/nano12091392
Keywords
mixed convection; nanofluid; entropy generation; lid-driven cavity
Categories
Funding
- Deanship of Scientific Research at Umm Al-Qura University [22UQU4331317DSR05]
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This study investigates mixed convection in a lid-driven cavity and considers the effects of various parameters. The simulations show that heat transfer plays a major role in entropy generation, while the effects of friction and magnetic fields are minimal.
This work investigates mixed convection in a lid-driven cavity. This cavity is filled with nanofluid and subjected to a magnetic field. The concentric ovoid cavity orientation (gamma), 0-90 degrees, and undulation number (N), 1-4, are considered. The Richardson number (Ri) varies between 1 and 100. The nanofluid volume fraction (phi) ranges between 0 and 0.08%. The effect of the parameters on flow, thermal transport, and entropy generation is illustrated by the stream function, isotherms, and isentropic contours. Heat transfer is augmented and the Nusselt number rises with higher Ri, gamma, N, and phi. The simulations show that the heat transfer is responsible for entropy generation, while frictional and magnetic effects are marginal.
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