Heat transfer enhancement in a trapezoidal cavity due to the cavity orientation and marangoni convection

Abstract

Understanding Marangoni convection and nanoparticles' convection holds significant potential for applications in materials science, chemical engineering, and biomedical engineering. This article delves into Marangoni convection within cavity flow and its implications for fluid dynamics and thermodynamics. Our study finds out that the various orientations of the trapezoidal cavity affect the convection phenomenon inside the cavity. Additionally, the influence of nanoparticles is explored, with concentrations (0.001≤ φ ≤ 0.01), Rayleigh numbers (104 ≤ Ra ≤106) and Marangoni convection (100 ≤ Ma ≤900). A comparison study considering the Marangoni convection shows that its presence can enhance the heat transfer rate. Considering Marangoni convection with the smaller side at top leads to a notable enhancement of the Nusselt number.

Keywords

• Marangoni convection
• Nanofluid
• Trapezoidal enclosure
• FEM