Quintuple hot-wire measurements of the turbulence structure in confined swirling flows

The novel quintuple hot-wire measurement technique was used to perform deta iled measurements of the mean velocities and Reynolds stresses in an isothe rmal model combustion chamber at two different levels of swirl. The measure d flow quantities are analyzed and described in detail where the emphasis i s put on typical swirl-related effects as well as the interaction of rotati on and turbulence dynamics. The results provide a well-documented data base for the development and validation of turbulence closures. They also serve to improve understanding of specific characteristics of swirl flows.