CN105890871A - Tracer particle putting device used for liquid flow field particle image velocimeter (PIV) measurement - Google Patents
Tracer particle putting device used for liquid flow field particle image velocimeter (PIV) measurement Download PDFInfo
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- CN105890871A CN105890871A CN201610214715.6A CN201610214715A CN105890871A CN 105890871 A CN105890871 A CN 105890871A CN 201610214715 A CN201610214715 A CN 201610214715A CN 105890871 A CN105890871 A CN 105890871A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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Abstract
The present invention discloses a tracer particle putting device used for liquid flow field PIV measurement. When a PIV system is used to measure a liquid flow field, the distribution situation of the tracer particles in the tested flow field influences an experiment result greatly, so that higher requirements for putting the tracer particles are required. Firstly, the tracer particles must be distributed evenly in the tested flow field to guarantee the effective and real measurement results; secondly, aiming at different working conditions, the tracer particles in the flow field should have different concentrations, namely, the concentration of the tracer particles can be adjusted. The tracer particle putting device disclosed by the present invention can satisfy the above requirements totally, comprises a flow field liquid inlet pipeline, a mixing chamber, a putting window and a flow field liquid outlet pipeline, can spread the tracer particles in the tested flow field evenly, also can add the tracer particles or the flow field liquid at the putting window, adjusts the particle concentration in the flow field rapidly, effectively and continuously, does not influence the tested flow field at all by itself, is simple in structure, is convenient to assemble and easy to operate, and can be widely used in the tracer particles putting working of the liquid flow field PIV measurement.
Description
Technical field
The present invention relates to a kind of trace particle delivery device measured for liquid flow field PIV, when this device is mainly used in utilizing particle image velocimetry equipment (PIV) to measure in liquid flow field, trace particle is sowed uniformly and stably the tested flow field of entrance, and for different measuring operating mode, the concentration of trace particle can be regulated quickly and effectively.
Background technology
Particle image velocimetry equipment (PIV), when for liquid flow field measurement, proposes high requirement to the controllability of trace particle distribution situation in flow field and concentration.When sowing trace particle and entering tested flow field, the uniformity coefficient that trace particle is distributed in flow field and can to measurement result produce large effect, if skewness, the real information in tested flow field cannot be reflected, measurement result can be made to produce bigger deviation, even produce the measurement result of mistake.And during for different Test Cycle, be required to again be adjusted trace particle concentration in tested flow field at any time, and it is brief as far as possible, rapidly to regulate feedback procedure.
Summary of the invention
Present invention mainly solves technical problem is that: when using PIV equipment to measure liquid flow field, a kind of delivery device uniformly, stably sowed by trace particle and enter in fluid to be measured can be provided, and can the regulation trace particle rapid, convenient concentration in test solution by this device.
For solving above-mentioned technical problem, the technical solution used in the present invention is: delivery device, by flow field liquid inlet conduit, hybrid chamber, throws in window and flow field liquid export line composition.Throwing in window and be installed on hybrid chamber top, flow field liquid export line is connected to bottom hybrid chamber, and inlet ductwork stretches in hybrid chamber through throwing in window.Trace particle is sowed by throwing in window, is entered tested flow field, is sufficiently mixed with from the liquid in inlet ductwork in hybrid chamber, leaves hybrid chamber through export pipeline and enter in tested flow field after mixing.Trace particle concentration in tested flow field can be increased by adding trace particle at input window, or add flow field liquid throwing in window, reducing trace particle concentration in flow field, this regulation process can carry out in real time according to the situation in tested region, regulate continuously.
The invention has the beneficial effects as follows: delivery device itself will not produce any impact to tested flow field, and apparatus structure is simple, it is simple to assemble, it is easy to operation, it is possible to be widely used in the trace particle input operation that liquid flow field PIV measures.
Accompanying drawing explanation
Fig. 1 is seeding particles apparatus structure schematic diagram；Wherein 1 is liquid inlet conduit；2 for throwing in window；3 is hybrid chamber；4 is liquid export line.
Detailed description of the invention
Use delivery device carry out trace particle sow time, delivery device is accessed in the pipeline of tested flow field.As it is shown in figure 1, tested flow field liquid flows into hybrid chamber 3 through inlet ductwork 1, mix mutually with the trace particle entered by input window 2, entered in fluid to be measured by export pipeline 4 after mix homogeneously.During regulation trace particle concentration, if tested flow field pipeline is circulation line, flow field liquid circulation flow moves, then add trace particle at input window and can increase trace particle concentration in fluid to be measured, or add fluid to be measured throwing in window, reduce trace particle concentration in flow field；If acyclic open pipeline, then trace particle concentration in trace particle injected volume i.e. scalable measured stream field is increased or decreased at input window 2.
Claims (5)
1. the trace particle delivery device measured for liquid flow field PIV, it is characterised in that: it is made up of flow field liquid inlet conduit, hybrid chamber, input window and flow field liquid export line.
The most according to claim 1, a kind of trace particle delivery device measured for liquid flow field PIV, it is characterized in that: throwing in window and be installed on hybrid chamber top, flow field liquid export line is connected to bottom hybrid chamber, flow field liquid inlet conduit stretches in hybrid chamber through throwing in window.
The most according to claim 1 and 2, a kind of trace particle delivery device measured for liquid flow field PIV, it is characterized in that: flow field liquid import and export pipeline interior diameter is D, hybrid chamber interior diameter is 2D to 5D, highly not less than 5D, throwing in window is annular, overall diameter 3D to 6D, inlet ductwork stretches into hybrid chamber length and is not more than 3D, and each junction uses arc to smoothly transit.
The most according to claim 1 and 2, a kind of trace particle delivery device measured for liquid flow field PIV, it is characterized in that: trace particle is sowed the tested flow field of entrance by throwing in window, it is sufficiently mixed with from the liquid in inlet ductwork in hybrid chamber, leaves hybrid chamber through export pipeline after mixing and enter in tested flow field.
The most according to claim 1 and 2, a kind of trace particle delivery device measured for liquid flow field PIV, it is characterized in that: if tested flow field pipeline is circulation line, flow field liquid circulation flow moves, then add trace particle at input window and can increase trace particle concentration in fluid to be measured, or add fluid to be measured throwing in window, reduce trace particle concentration in flow field；If acyclic open pipeline, then trace particle concentration in trace particle injected volume i.e. scalable measured stream field is directly increased or decreased at input window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610214715.6A CN105890871A (en) | 2016-04-08 | 2016-04-08 | Tracer particle putting device used for liquid flow field particle image velocimeter (PIV) measurement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610214715.6A CN105890871A (en) | 2016-04-08 | 2016-04-08 | Tracer particle putting device used for liquid flow field particle image velocimeter (PIV) measurement |
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| CN105890871A true CN105890871A (en) | 2016-08-24 |
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| CN201610214715.6A Pending CN105890871A (en) | 2016-04-08 | 2016-04-08 | Tracer particle putting device used for liquid flow field particle image velocimeter (PIV) measurement |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389297A (en) * | 2017-06-14 | 2017-11-24 | 西安热工研究院有限公司 | A kind of printed circuit board (PCB) heat exchanger channel flow field visual device |
| CN110095247A (en) * | 2019-06-04 | 2019-08-06 | 中国人民解放军国防科技大学 | Tracer particle scattering device, tracer particle scattering system and wind tunnel test system |
| CN111122114A (en) * | 2020-01-08 | 2020-05-08 | 河海大学 | Automatic tracer feeding device for field tracer experiment in subsurface flow zone and implementation method of automatic tracer feeding device |
| CN113188950A (en) * | 2021-04-01 | 2021-07-30 | 中钢集团鞍山热能研究院有限公司 | Tracer chain detection method and device for tracking flow track and speed of bulk material |
| CN114252648A (en) * | 2021-12-22 | 2022-03-29 | 北京航空航天大学 | Tracer particle generator system and control method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107389297A (en) * | 2017-06-14 | 2017-11-24 | 西安热工研究院有限公司 | A kind of printed circuit board (PCB) heat exchanger channel flow field visual device |
| CN110095247A (en) * | 2019-06-04 | 2019-08-06 | 中国人民解放军国防科技大学 | Tracer particle scattering device, tracer particle scattering system and wind tunnel test system |
| CN111122114A (en) * | 2020-01-08 | 2020-05-08 | 河海大学 | Automatic tracer feeding device for field tracer experiment in subsurface flow zone and implementation method of automatic tracer feeding device |
| CN113188950A (en) * | 2021-04-01 | 2021-07-30 | 中钢集团鞍山热能研究院有限公司 | Tracer chain detection method and device for tracking flow track and speed of bulk material |
| CN113188950B (en) * | 2021-04-01 | 2023-09-12 | 中钢集团鞍山热能研究院有限公司 | Trace chain detection method and device for tracking flow track and speed of bulk material |
| CN114252648A (en) * | 2021-12-22 | 2022-03-29 | 北京航空航天大学 | Tracer particle generator system and control method thereof |
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Application publication date: 20160824 |
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