A 3D Numerical Study of the Impact of Physical Parameters on the Behavior of a Flexible Vortex Generator and Heat Transfer within a Microchannel

In this paper, the impact of geometric parameters on the behavior of a flexible vortex generator and heat transfer in a three-dimensional microchannel is investigated. The primary objective of this study is to analyze the effects of the geometric parameters of the vortex generator on heat transfer and pressure drop within the microchannel. Numerical simulations were conducted using COMSOL software to examine the influence of variations in the width and height of the vortex generator cross-section, as well as the inlet flow velocity. In this research, the width and height of the vortex generator cross-section were analyzed within the range of 0.15 to 0.3 mm. The results indicated that increasing the width of the generator at a constant velocity resulted in up to a 3% increase in the Nusselt number. Additionally, increasing the width of the generator from 0.15 mm to 0.3 mm led to an increase in the generator tip displacement, indicating reduced flow resistance and enhanced efficiency in preventing boundary layer formation. The study also examined three ranges of flow velocity (1.71, 2.28, and 3.42 m/s). The results showed that as the flow velocity increased, the Nusselt number increased, while the friction coefficient decreased, and leading to a reduction in the system's pressure drop.