Vortex-Sheet Representation of Leading-Edge Vortex Shedding from Finite Wings

Flow criticality governs leading-edge-vortex initiation on finite wings in unsteady flow

“…2013, 2014; Hirato et al. 2019), the structures observed in our CFD results are similar to those observed by Ghosh Choudhuri et al. (1994), and the overall observations are in general agreement with the LEV-formation flow physics discussed by other researchers (Visbal & Shang 1989; Ghosh Choudhuri et al.…”

“…An approach to extend the UVLM to handle wings with LEV formation using a vortex-sheet representation of the LEV sheet is presented in Hirato et al. (2019).…”

Variation of leading-edge suction during stall for unsteady aerofoil motions

“…Furthermore, it is desirable that the approach involve surface quantities and be straightforward to implement so that the data processing can be automated. In earlier work involving low-Reynolds-number unsteady aerofoil flows, a signature in the surface skin-friction coefficient (, defined using ) distribution was used for identifying the time instant of LEV initiation (Ramesh et al 2014; Hirato et al 2019). An improved approach that works well at both low and high Reynolds numbers is presented in this section.…”

“…was used for identifying the time instant of LEV initiation (Ramesh et al 2014;Hirato et al 2019). An improved approach that works well at both low and high Reynolds numbers is presented in this section.…”

On the leading-edge suction and stagnation-point location in unsteady flows past thin aerofoils

“…It has been shown through experimental and numerical verification that the process of leading-edge vortex (LEV) formation is strongly correlated to the local suction at the leading edge and hence the LESP (Ramesh et al 2018;Deparday & Mulleners 2018. This parameter has been used to predict and control the occurrence of LEV formation, and in discrete-vortex methods for modelling intermittent LEV shedding on aerofoils/wings where the LESP is used to both predict LEV formation and modulate the strength of discrete vortices shed from the leading edge (Ramesh et al 2014(Ramesh et al , 2017Hirato et al 2019).…”