Fig. 5.

Power spectral density of the turbulent kinetic energy in axisymmetric and eccentric cases at $\text{Re}=2100$. The black, green and red lines respectively correspond to $60\%$, $50\%$ and $25\%$ stenosis degrees. Each column shows the PSD at $x=1,2,3$ and 4 diameters downstream of stenosis respectively during the blowing stage. Each rows from left to right shows PSD for oscillation frequencies of ${\omega }_1$, ${\omega }_2$ and ${\omega }_3$ respectively. The solid, dotted and dashed lines have slope of $\frac{-5}{3}$, $\frac{-10}{3}$ and $-7$