1. Alternatively, the skin-friction line pattern can be employed for analyzing the mean flow topology and identifying separated flow regions (Fig. 18). Here, the arc-length, s, was measured from the point where the body center-linecuts throughthebow, alongaplane ofconstantazimuthangle, ϑ. Theazimuth angle, ϑ, was measured from the windward symmetry plane. The geometry is tapered offfor x ≥ 2.6 which corresponds to s/r = π/2+2(2.6-0.5)= 5.77. The skin-friction line patterns illustrate a reduced downstream extent of the nose bubble with increasing Reynolds number for Re = 5×103& 5×104and attached flow for Re = 5×105& 5×106.
2. Fig. 21;An
3. Iso-contours of the unresolved eddy viscosity, µT,u, and the model contribution, f, are shown in Fig. 22. No data is shown for Re = 5×103since these simulations were carried out without turbulence model. With increasing Reynolds number the unresolvededdy viscosity increases by roughly 2-3orders of magnitude. The model contribution is 1 at the wall and in the freestream and overall also increases with Reynolds number.
4. Fig. 24;Fig