Experimental evaluation of drag rotation coefficient of the spherical particle
Abstract eng: Saltatory solid particles conveyed by fluid impact a channel bed from time to time. As a result of the collision the particles receive angular velocity, which gradually decreases with time. For numerical simulation of saltation it is necessary to know values of the drag rotation coefficient. In this paper experimental results of the rotating spherical particles moving in water are described. The rubber spherical balls with density near that of water were used; each of them was speeded up in a special chute that ensured that the particle rotated in a given plane. Standard video system was used to capture particle motion. Values of the drag coefficient of the rotating spherical particle were determined in a dependence on rotation particle Reynolds number.
Contributors:
Publisher:
Institute of Thermomechanics AS CR, v.v.i., Prague
Conference Title:
Conference Title:
Engineering Mechanics 2004
Conference Venue:
Svratka (CZ)
Conference Dates:
2004-05-10 / 2004-05-13
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2014-11-14, last modified 2014-11-18
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