Axisymmetric creeping motion of particles towards a circular orifice or disk

The results of an experimental study of the forced and periodic breakdown of a confined vortex rotating in the opposite direction are presented. The vortex tube consists of two chambers connected by a short conduit through streamlined transitions. The upstream end is closed by a plain wall, and a circular orifice is provided at the downstream end. The swirling flow and the breaker-vortex are generated by introducing varying proportions of air or water through tangential ports located near the upstream and downstream walls of the unit. The cases of single breakdown and periodic breakdown are explored and typical data are presented for each case. Finally, the pros and cons of the two existing transition theories are discussed.

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The creeping motion of liquid drops through a circular tube of comparable diameter

Journal of Fluid Mechanics ◽

10.1017/s0022112075002625 ◽

1975 ◽

Vol 71 (2) ◽

pp. 361-383 ◽

Cited By ~ 57

Author(s):

B. P. Ho ◽

L. G. Leal

Keyword(s):

Pressure Drop ◽

Circular Tube ◽

Total Flow ◽

Flow Rates ◽

Liquid Drops ◽

Neutrally Buoyant ◽

Creeping Motion

The creeping motion through a circular tube of neutrally buoyant Newtonian drops which have an undeformed radius comparable to that of the tube was studied experimentally. Both a Newtonian and a viscoelastic suspending fluid were used in order to determine the influence of viscoelasticity. The extra pressure drop owing to the presence of the suspended drops, the shape and velocity of the drops, and the streamlines of the flow are reported for various viscosity ratios, total flow rates and drop sizes.

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Bionic Creeping Motion Study on Non Singular and Redundant Degree Manipulator

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.563.280 ◽

2014 ◽

Vol 563 ◽

pp. 280-283

Author(s):

Kai Zhao ◽

Xiu Juan Liu ◽

Yong Zhi Yang ◽

Li Min Song ◽

Chun Guang Wang

Keyword(s):

Mobile Robot ◽

Joint Angle ◽

Motion Study ◽

Fixed Base ◽

Relationship Of ◽

Creeping Motion

The mechanical arm of multi degree freedom can be used as a mechanical arm by surrounded and grasping operation, but also can be used as mobile robot on the ground. In the case of the not fixed base, the bionic motion is studied. In this paper, the mechanism relationship of the mechanical arm is analysized, and the manipulator the joint angle changes are obtained on creeping movement of the mechanical arm.

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