Particle spreading device based on measurement of flow field inside piv ventilated cavity

An internal flow field and particle technology, applied in measuring devices, fluid velocity measurement, velocity/acceleration/impact measurement, etc., can solve problems such as blockage of ventilation pipelines, particle accumulation, and inability to use gas flow fields, and improve reliability Effect
CN105891539BActive Publication Date: 2019-05-17BEIJING INSTITUTE OF TECHNOLOGYGY
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2019-05-17

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Abstract

The invention discloses a particle dispensing device for PIV based internal flow field measurement of a ventilated cavity. A cavitator in the dispensing device includes an enclosed casing, ventilation holes are formed in the lateral side of the cativator, an air inlet pipe connected to the cativator is communicated with an internal cavity, the internal of the cativator includes a particle caching pipe, the lateral side of the particle caching pipe also includes ventilation holes, an air inlet connecting piece connected to the particle caching pipe is communicated with the cavity, the cavity is formed between the external surface of the particle caching pipe and the internal surface of the cativator, an external pipeline is connected with a particle storage pipe, particles are supplemented timely via two control valves and an air source, and thus, the particles can be dispensed continuously and uniformly. The particle dispensing device can be used for researches on ventilation cavitation of different appearances, and provides convenience for measurement and application of a PIV system.
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Description

technical field

[0001] The invention relates to a PIV measuring device, in particular to a detachable particle spreading device for measuring the internal flow field structure of a ventilation cavity, and belongs to the technical field of PIV measuring devices. Background technique

[0002] Ventilated cavitation, as an effective drag reduction method, is one of the research hotspots in the field of underwater weapons at present. The study of the internal flow field structure of ventilated cavitation has important theoretical significance and application value. However, due to the complexity and heterogeneity of the cavitation flow field structure, comprehensive and in-depth experimental research is very difficult. At present, the PIV measurement of the ventilated cavitation flow field can only obtain the flow details of the flow field around the ventilated cavity. Meticulous measurement of structure lacks effective means and methods. This is caused by the working principle ...

Claims

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