Computational Analysis of a Corrugated Dragonfly Airfoil at Low Reynolds Number

Authors- Mr.S Siva Jothi, L. Jerclin, V.Arunjetlin, M. Lalitharani

Abstract-The chord Reynolds numbers of micro air vehicles are usually in the range of 104 to 105.The laminar flow separation is a common phenomenon occurring in a flow over a body. The corrugated dragonfly airfoil has the potential ability to sustain an attached flow at low Reynolds number, thereby suppressing laminar flow separation or large laminar bubbles. In this project an optimized corrugated dragonfly airfoil is designed from the survey of standard airfoils. The flow properties of the corrugated dragonfly airfoil are measured at different angles of attack such as 00,50,100 and 150 for the Reynolds number of 5*104 in which the MAVs usually operates. The aerodynamic performance of corrugated dragonfly airfoil is compared with a traditional NACA 0012 airfoil at the same Re and also with a corrugated dragonfly airfoil at a different Re of 34000. The corrugated airfoil is meshed using GAMBIT and the computational fluid flow analysis is carried out using FLUENT on the corrugated dragonfly airfoil at low Reynolds number of 5*104. The flow behavior around the airfoil is analyzed and simulations are carried out to predict the behavior of unsteady flow structures around the airfoil at different angles of attack.

DOI: /10.61463/ijset.vol.12.issue2.128