Effect of axially varying sandpaper roughness on bubbly drag reduction in Taylor–Couette turbulence
نویسندگان
چکیده
منابع مشابه
Drag reduction in bubbly Taylor-Couette turbulence.
In Taylor-Couette flow the total energy dissipation rate and therefore the drag can be determined by measuring the torque on the system. We do so for Reynolds numbers between Re=7 x 10(4) and Re=10(6) after having injected (i) small bubbles (R=1 mm) up to a volume concentration of alpha=5% and (ii) buoyant particles (rhop/rhol=0.14) of comparable volume concentration. In case (i) we observe a c...
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ژورنال
عنوان ژورنال: International Journal of Multiphase Flow
سال: 2020
ISSN: 0301-9322
DOI: 10.1016/j.ijmultiphaseflow.2020.103434