Non-recirculating and recirculating inertial flows of a viscoplastic fluid around a cylinder

► Inertial flows of a viscoplastic fluid around a cylinder were studied numerically. ► The influence of the Reynolds number, Oldroyd number and power law index was shown. ► The flow morphology, the stress fields, the drag coefficient were determined. ► The opposing effects of inertia and yield stress on the yielded zones were shown. ► Useful formulas for the drag coefficient were established.