CN205506348U - Tracer particle suitable for it measures to flow surface current field image humorously - Google Patents
Tracer particle suitable for it measures to flow surface current field image humorously Download PDFInfo
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- CN205506348U CN205506348U CN201620268707.5U CN201620268707U CN205506348U CN 205506348 U CN205506348 U CN 205506348U CN 201620268707 U CN201620268707 U CN 201620268707U CN 205506348 U CN205506348 U CN 205506348U
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- particle
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- flow field
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- surface flow
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Abstract
The utility model relates to a tracer particle suitable for it measures to flow surface current field image humorously belongs to hydrodynamics technical field. The whole streamline the earth shape that is of this particle, the centre of particle is the cylindricality cavity, the particle openly is the annular, and the side is the cone. This following nature of particle rivers is good, is difficult for the influence of wind -engaging, difficult running aground, and difficult gathering, easily the camera obtains, has improved surperficial flow field measurement accuracy.
Description
Technical field
The utility model relates to a kind of trace particle being applicable to wind current surface flow field image measurement, belong to
In hydrodynamics technology field.
Background technology
The advantage of liquid form and whole-field measuring is not disturbed, at surface flow field figure owing to image measurement technology has
It is widely used in test.But image velocimetry is a kind of indirect measurement method, and it measures base
Plinth is FLOW VISUALIZATION, obtains the speed of corresponding fluid by measuring the probe material speed in fluid.For
Realize the image measurement to surface flow field, need to disseminate at the water surface to follow the trace particle of water movement, show
The fluid trace performance of track particle directly affects the granularity of measurement.In order to avoid fluid and particle motion it
The difference that front existence is serious, it is necessary to the hydrodynamic characteristic of particle is studied.
Because surface flow field measured zone is big, photographic head is higher away from the water surface, because being limited by resolution, it is desirable to
Trace particle to have preferable availability, and particle diameter can not be the least, and need to swim in flow surface, by
The trace particle followability problem that this brings will have a strong impact on the precision of flow field survey.At present, trace particle
Have the disadvantages that trace particle response time is long in fluid Sudden change region；Viscous force shadow due to water
Ringing, trace particle is easily assembled, overlap is agglomerating；Owing to particle draft is relatively big, easily stranded in phytal zone；
Owing to spheroid particle exposes fluid position relatively greatly, the interference of Yi Shoushui.
Utility model content
The technical problems to be solved in the utility model is: propose being applicable to humorously of a kind of interference being susceptible to water
The trace particle of stream surface flow field image measurement.
This utility model is that the technical scheme solving the proposition of above-mentioned technical problem is: one is applicable to wind current table
The trace particle that surface current field picture is measured, it is characterised in that the global shape of particle generally streamline, described grain
The centre of son is cylindrical cavity, and described particle front is annular, and side is cone.
Preferably, described particle maximum gauge, the circle diameter of intermediate cylindrical cavity with cone peak ratio are
5.5∶2.5∶1。
Preferably, described particle is made up of the plastics that density and fluid density are close.
Preferably, described particle is opaque plastics.
Preferably, in particle side view thickness and thinnest part than for 4:1.
Trace particle of the present utility model compared with existing trace particle, because of middle cylinder cavity can water-retention,
Steady flow is more preferable, therefore dispersibility, all have improvement with aqueous and acceleration.
This particle current followability is good, is difficult to affected by wind, is difficult to stranded, is difficult to assemble, it is easy to shooting
Machine obtains, and improves surface flow field certainty of measurement.
Accompanying drawing explanation
It is described further of the present utility model below in conjunction with the accompanying drawings.
Fig. 1 is that the facing of trace particle being applicable to wind current surface flow field image measurement of the present utility model is shown
It is intended to；
Fig. 2 is that the side-looking of the trace particle being applicable to wind current surface flow field image measurement of the present utility model is shown
It is intended to；
Detailed description of the invention
Embodiment 1
The trace particle being applicable to wind current surface flow field image measurement of the present embodiment as depicted in figs. 1 and 2,
The global shape of particle generally streamline, the centre of described particle is cylindrical cavity 2, and described particle front is annular,
Side is cone.
Described particle maximum gauge 1, the circle diameter of intermediate cylindrical cavity 2 are 5.5 with cone peak ratio:
2.5∶1。
Described particle is made up of the plastics that density and fluid density are close.Described particle is opaque plastics.
In particle side view, thickness and thinnest part are than for 4:1.
Of the present utility model it is not limited to the various embodiments described above.The technical scheme that all employing equivalents are formed,
All fall within the protection domain of this utility model requirement.
Claims (5)
1. the trace particle being applicable to wind current surface flow field image measurement, it is characterised in that particle is whole
Body is the global shape of streamline, and the centre of described particle is cylindrical cavity, and described particle front is annular, side
For cone.
The trace particle being applicable to wind current surface flow field image measurement the most according to claim 1, its
Being characterised by, described particle maximum gauge, the circle diameter of intermediate cylindrical cavity are 5.5 with cone peak ratio:
2.5∶1。
The trace particle being applicable to wind current surface flow field image measurement the most according to claim 1, its
Being characterised by, described particle is made up of the plastics that density and fluid density are close.
The trace particle being applicable to wind current surface flow field image measurement the most according to claim 1, its
Being characterised by, described particle is opaque plastics.
The trace particle being applicable to wind current surface flow field image measurement the most according to claim 1, its
Being characterised by, in particle side view, thickness and thinnest part are than for 4:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620268707.5U CN205506348U (en) | 2016-03-31 | 2016-03-31 | Tracer particle suitable for it measures to flow surface current field image humorously |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620268707.5U CN205506348U (en) | 2016-03-31 | 2016-03-31 | Tracer particle suitable for it measures to flow surface current field image humorously |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205506348U true CN205506348U (en) | 2016-08-24 |
Family
ID=56735583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620268707.5U Active CN205506348U (en) | 2016-03-31 | 2016-03-31 | Tracer particle suitable for it measures to flow surface current field image humorously |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205506348U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884155A (en) * | 2017-12-14 | 2018-04-06 | 交通运输部天津水运工程科学研究所 | Underwater simulation marine growth follows the trail of observation system |
-
2016
- 2016-03-31 CN CN201620268707.5U patent/CN205506348U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884155A (en) * | 2017-12-14 | 2018-04-06 | 交通运输部天津水运工程科学研究所 | Underwater simulation marine growth follows the trail of observation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |