Receptivity of relaminarizing flow in the laminar-turbulent transition process has been investigated by the introduction of outside disturbances into the super-critical flow modes with one toroidal TG (Taylor-Goertler) vortex for clearance ratio beta = 0.14 in the spherical Couette flow with an inner rotating sphere. The onset Reynolds number of toroidal TG vortex, spiral TG vortex and traveling waves are not influenced by the outside disturbance. However, the onset Reynolds number of the relaminarization is influenced by them. The receptivity of the super-critical disturbance modes to the outside disturbances is greater in the relaminarizing Re-range than the lower Re-range.
球クエット系の層流-乱流遷移における撹乱消滅の受容性
nalsp0047017.pdf
(516.08KB)
