Fig.1.20 Instantaneous velocity vector volume (TOMOPIV) with swirl strength within the turbulent boundary layer flow at Retheta=2460.

Reference

Schröder, A., Geisler, R., Staack, K., Elsinga, G.E., Scarano, F., Wieneke, B., Henning, A., Poelma, C., Westerweel, J.:

Eulerian and Lagrangian views of a turbulent boundary layer flow using time-resolved tomographic PIV.

Exper. Fluids 50(4),1071–1091 (2011). DOI10.1007/s00348-010-1014-x. URL https://dx.doi.org/10.1007/s00348-010-1014-x