Experimental investigation of helical structures in swirling flows
S Grundmann, F Wassermann, R Lorenz, B Jung… - International Journal of …, 2012 - Elsevier
In this investigation the flow in a generic swirl tube with a tangential double-inlet swirl
generator and variable exit orifices was experimentally investigated. Using magnetic
resonance velocimetry (MRV) three-dimensional, three-component velocity fields were
measured for two different Reynolds numbers: 10,000 and 15,000, and for three different exit
orifices. The swirl generator had a fixed geometry producing an initial swirl number of 1.6 for
all cases. One major observation is the occurrence of a three-layered flow structure. An …
generator and variable exit orifices was experimentally investigated. Using magnetic
resonance velocimetry (MRV) three-dimensional, three-component velocity fields were
measured for two different Reynolds numbers: 10,000 and 15,000, and for three different exit
orifices. The swirl generator had a fixed geometry producing an initial swirl number of 1.6 for
all cases. One major observation is the occurrence of a three-layered flow structure. An …
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