Figure 9.

Incompressible stochastic flow past a cylinder: (a) The computational mesh consists of 412 triangular spectral elements of polynomial order 11. (b) Standard deviation of the stream-wise velocity component at time t=4. The quantity of interest here is the base pressure coefficient C_BP, where p_B denotes the fluid pressure on the cylinder surface at 180° from the stagnation point (base pressure), while $U_{\mathrm{\infty }}$ and $p_{\mathrm{\infty }}$ are the free-stream velocity and pressure, respectively.