摘要

We have experimentally investigated a non-equilibrium turbulent boundary layer subjected to an adverse-pressure-gradient developing on a uniformly heated flat wall. The spatio-temporal structures educed from a multi-point simultaneous measurement are reasonably interpolated based on the "proper orthogonal decomposition (POD)". In the near-wall region, elongated hot regions stay dull and less active; on the other hand, large-scale cold regions having strong energy frequently invade the near-wall region. Then, the energy-containing events in the near-wall region are dis- cussed based on the results of wavelet analysis.