US 11,953,405 B2Granted

Tracer particle spreading device for a boundary layer flow visualization experiment based on a flat plate

AssigneeZhejiang University

InventorsYao Zheng, Zhixian Ye, Jianfeng Zou, Yang Zhang, Yiyang Jiang, Zenan Tian, Shaochang Mo

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Abstract

A tracer particle spreading device for a boundary layer flow visualization experiment based on a flat plate includes a tracer particle generator, a smoke storage box, and a wall-surface particle distribution box. Fume and oil are pressurized by a micro pump and flows into a heating pipe to be heated and vaporized, and then is ejected from a nozzle to form tracer particles. The tracer particles enter the smoke storage box via a smoke guiding tube. An axial flow fan is mounted on a wall surface of the smoke storage box. The tracer particles enter a cavity of the wall-surface particle distribution box via the smoke guiding tube, and the tracer particles are rectified by a rectifying plate and ejected from a spreading slit. An outlet of the spreading slit is at an angle of 15° with respect to an experiment flat plate.

Claims5

Dependent claims

A tracer particle spreading device for a boundary layer flow visualization experiment based on a flat plate, the tracer particle spreading device comprising a tracer particle generator, smoke guiding tubes, a smoke storage box and a wall-surface particle distribution box, wherein:

the tracer particle generator comprises a fume and oil storage tank, a micro pump, a heating tube and a nozzle connected together in sequence;
the nozzle of the tracer particle generator is connected to the smoke storage box via the smoke guiding tubes;
the smoke storage box is configured for adjusting a flow speed of particles;
the wall-surface particle distribution box comprises a cavity, a rectifier plate mounted at a middle part of the cavity, and a thin wall cover plate provided at an upper part of the cavity and provided with particle spreading slits through which the particles escape;
and
an outlet of the smoke storage box is connected to a lower part of the cavity via the smoke guiding tubes.

3 more elements

Dependencies are inferred from the claim text.