EFFECT OF BIO-INSPIRED MODIFICATION ON FLUID-STRUCTURE INTERACTION AND ITS CONTROL: A REVIEW

Bio-inspired surfaces have been a relevant field of study in recent years. This review aims to synthesize and evaluate the research on passive and active modifications to help develop a new approach to work in this area and stimulate further research. The review elaborates on flow interactions with control structures such as riblets, flexible geometry, and synthetic jets for practical applications. Experiments have confirmed that minor alterations in the near-wall region could affect the wall shear drag produced by the boundary layer. Biomimetic riblets have shown a significant amount of drag reduction. A review of the performance studies of riblets is discussed, along with the effect of geometric and flow parameters. In addition, the flow dynamics involved in flexible structure for thrust generation could be understood from this review. Active control analysis using synthetic jet actuators has shown potential promise in aerodynamic applications. The literature indicates that understanding the leading edge vortex (LEV) is essential for natural fliers study. Alteration of LEV on a flapping wing using active control techniques has also been summarized.