2022/08/01 by Octavianty, Ressa, Simanjuntak, Triwanto
#FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn)
paper · doi:10.48550/arxiv.2208.00663
In this paper, the linear stability theory of an incompressible asymptotic suction boundary layer was studied. A small disturbance was introduced spatially in a streamwise direction to the laminar base flow with various wavenumber α= 0.01 - 0.3 to investigate its temporal stability. A spectral collocation method was used to solve the fourth-order ordinary differential equation (ODE) of the generalized eigenvalues problem. From the neutral stability curve, the result showed that the critical Reynolds number occurred at Rec= 47145 for α=0.161. By taking into account that the disturbance traveled in spanwise direction, the transition can be delayed.