Two models and the generation mechanisms of the drag on an accelerating starting disk
Z Li, Y Xiang, S Qin, H Liu, F Wang�- Physics of Fluids, 2022 - pubs.aip.org
As a canonical problem, the impulsive starting of a circular disk contains the fundamental
mechanisms of the force generation of the drag-based propulsions. In this paper, a circular
disk is uniformly accelerated to a constant target velocity along a straight path, the
instantaneous drag on and the flow fields around the disk are measured. A series of
experiments were conducted by varying the two dimensionless numbers, ie, the Reynolds
number (Re) ranging from 40 000 to 80 000 and the acceleration number ( A*)(double�…
mechanisms of the force generation of the drag-based propulsions. In this paper, a circular
disk is uniformly accelerated to a constant target velocity along a straight path, the
instantaneous drag on and the flow fields around the disk are measured. A series of
experiments were conducted by varying the two dimensionless numbers, ie, the Reynolds
number (Re) ranging from 40 000 to 80 000 and the acceleration number ( A*)(double�…