Figure 13.

Lift (C _L) and drag (C _D) coefficients for flow past a stationary cylinder at R e=200. The computational domain Ω is discretized using a six‐level locally refined grid with a refinement ratio of two between levels and an N×N coarse grid. The spacing between the nodes of the immersed structure is approximately M _facΔx _finest. Under simultaneous Lagrangian and Eulerian grid refinement, the scheme converges to the same dynamics for all values of M _fac. Notice, however, that the best accuracy is obtained for larger values of M _fac. Using a relatively finer structural mesh spacing results in larger lift and drag coefficients and lower vortex shedding frequencies. Thus, smaller values of M _fac increase the effective numerical size of the cylinder