Extraction of Multi-scale Turbulent Structure from Piv Results Based on Wavelet Vector Multiresolution Technique
نویسندگان
چکیده
The wavelet-based vector multiresolution technique was proposed and applied to the post-processing of PIV results for identifying the multi-scale turbulent structures. By analyzing the instantaneous streamlines and vorticity fields of various scales the important information on the multi-scale flow structures was obtained. The large-scale vortices or coherent structures with a central scale of a=15.36mm were easily extracted from PIV measurement results. The intermediateand small-scale vortices embedded within the large-scale vortices were separated and visualized.
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