Vortex shedding and turbulence scales in staggered tube bundle flows

摘要

Time-resolved LDA measurements of the axial and transverse velocity components were performed in the first 6 rows of a staggered tube bundle with relative transverse and longitudinal pitch ratios of 3.6 and 1.6, respectively. Measurements were carried out in a flow of water at a Re_d of 12, 858. A flow periodicity with a Strouhal number equal to 0.26 was detected, which is in agreement with published data. This periodicity was found to broaden the turbulence levels by up to 50/100 in some locations.