Abstract
The distribution of capsules and rheological properties of suspensions in curved tubes are investigated numerically. At limited inertia, the effective viscosity decreases with increasing Reynolds number (Re), which is different from the variation trend in straight tubes. Dean's vortices play an important role. They greatly promote the capsules' circumferential transportation by trapping the capsules into their centers and making the location of maximum azimuthal velocity close to them.
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