CN1741093A - Fluid phenomenon two-dimensional analog demenstration method and special dyeing apparatus thereof - Google Patents
Fluid phenomenon two-dimensional analog demenstration method and special dyeing apparatus thereof Download PDFInfo
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- CN1741093A CN1741093A CN200510094337.4A CN200510094337A CN1741093A CN 1741093 A CN1741093 A CN 1741093A CN 200510094337 A CN200510094337 A CN 200510094337A CN 1741093 A CN1741093 A CN 1741093A
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- liquid film
- embolus
- dyeing apparatus
- fluid phenomenon
- analog demenstration
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000012530 fluid Substances 0.000 title claims abstract description 30
- 238000004043 dyeing Methods 0.000 title claims description 20
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 208000005189 Embolism Diseases 0.000 claims description 25
- 239000003086 colorant Substances 0.000 claims description 15
- 238000001802 infusion Methods 0.000 claims description 11
- 238000004088 simulation Methods 0.000 claims description 6
- 238000004040 coloring Methods 0.000 abstract 4
- 238000013461 design Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000006399 behavior Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004534 enameling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001028 reflection method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The invented method includes the following steps: forming flowing liquid film on the analogue demonstration equipment, injecting colouring agent into colouring device, inserting the inserter of colouring device into liquid film to colour the liquid film, utilizing general light source to directly irradiate liquid film and utilizing observation equipment to observe fluid phenomenon. The invented colouring device includes container, soft tube and inserter.
Description
One, technical field
The present invention relates to the analog demenstration method that adopted on a kind of teaching and scientific research, a kind of specifically fluid phenomenon two-dimensional analog demenstration method the invention still further relates to a kind of special dyeing apparatus of this method of realization.
Two, background technology
The non-linear behavior of multiple fluid such as vortex street, turbulent flow is a common phenomena very in the Nature, also is one of object of physicism, often need demonstrate its variation intuitively in teaching and scientific research.Existing analog demenstration process is to form the liquid film that flows earlier on simulation demonstrating apparatus, passes through following several demenstration methods again to observe fluid phenomenon:
(1) diffuse reflection method
Adopt the diffuse reflection screen under the strong white light to be light source irradiation liquid film, the interference fringe that reflects on the Direct observation liquid film.This method can be seen reflection strip and the out-of-date disturbance situation of enameling in the liquid film surface of flow of liquid, the demonstration effect is clear, obvious, disturbance was violent when but flow rate of liquid was very fast, and the color of reflection ray is not strong, and the liquid flow condition that this method is observed is limited to the liquid film surface.
(2) reflective interferometric method
This method is with light source direct irradiation liquid film and be reflected in Bai Pingshang, by observe on the white screen interference fringe with the simulation fluid phenomenon, this method can be simulated the various continuous variable condition of fluid from the laminar flow to the turbulent flow and the vortex street that produces when having hamper to insert, and can reach effect preferably.Disturbance was very big when but the liquid film flow velocity was accelerated, and along with the fine and closely woven difficult resolution that becomes of the increase interference fringe of thickness of liquid film, effect is not very good.
(3) sciagraphy
This method produces beam of laser direct irradiation liquid film after beam expanding lens expands bundle by laser instrument, light beam sees through liquid film the striped of fluid is incident upon Bai Pingshang behind the liquid film, this method can be demonstrated the real conditions of fluid inside, can observe the various continuous variation that carries out the transition to turbulent flow from laminar flow; If insert hamper in the even velocity of flow field, the situation of streaming of liquid is obvious, and the vortex street phenomenon is also high-visible under certain speed range, and the disturbance of liquid film and thickness are to observing almost not influence.But this method must be used laser instrument and beam expanding lens, the equipment complexity, and use cost is higher.
Three, summary of the invention
1, goal of the invention: the purpose of this invention is to provide a kind of simple and easy to do, the fluid phenomenon two-dimensional analog demenstration method that use cost is low, this method only need utilize the ordinary light source illumination just can simulate and observe fluid phenomenon, and the fluid phenomenon of being demonstrated is clear attractive in appearance.In addition, the present invention also provides a kind of special dyeing apparatus of realizing this method.
2, technical scheme: fluid phenomenon two-dimensional analog demenstration method of the present invention is characterized in that it may further comprise the steps:
1) form the liquid film that flows on simulation demonstrating apparatus, simulation demonstrating apparatus is an existing equipment, and it makes liquid soap form a mobile soap liquid film on two open vertical planes of guide line by the effect of gravity.
2) coloring agent is injected dyeing apparatus, described coloring agent can be an ink, adopts cheap ink to reduce use cost to greatest extent as coloring agent under the condition that has satisfied request for utilization.
3) will in the insertion of the embolus in the dyeing apparatus liquid film liquid film be dyeed.
4) use ordinary light source direct irradiation liquid film and by facilities for observation observing fluid phenomenon, because fluid is mobile very fast, so must just can capture the fluid motion change of moment by facilities for observations such as video camera, cameras.
The principle of work of analog demenstration method: in the presentation process of fluid phenomenon, need in liquid film, insert object, with the situation of streaming after understanding fluid in the even velocity of flow field and meeting with obstruction, and observe the vortex street phenomenon of fluid in separation, vortex and the wake flow in boundary layer.The embolus that has the dyeing function in using dyeing apparatus inserts liquid film, coloring agent can dye to reaching wake flow around the embolus, because the significant difference of coloring agent and liquid film color, under the irradiation of ordinary light source, just can clearly see the details in the boundary layer and the vortex street of wake flow generation.
The dyeing apparatus of realization fluid phenomenon two-dimensional analog demenstration method of the present invention, it is characterized in that: it comprises container, flexible pipe and the embolus that loads coloring agent, side at embolus is provided with stria vertically, end at embolus is provided with the center pit that communicates with stria, and center pit links to each other with container by flexible pipe.
Outlet end at flexible pipe is connected to infusion niidl, and infusion niidl inserts in the center pit.Flexible pipe can use cheap infusion tube, reduces the production cost of device, and uses infusion niidl easily flexible pipe to be connected with stria and to unload.
Described embolus is wooden embolus, and promptly cheap, the convenience of drawing materials can process suitable stria simultaneously at an easy rate on embolus.
The dyeing apparatus principle of work: the embolus upper surface in demonstration usefulness is left stria one, and stria links to each other with the container that places the embolus top with flexible pipe by infusion niidl.Coloring agent in the container injects stria under action of gravity.Embolus is inserted in the liquid film that apparatus for demonstrating forms, and the one side that makes stria is upwards with opposite with the flow direction of liquid film, the coloring agent in the stria dyes to embolus liquid film on every side with after liquid film mixes.The flow of coloring agent can be adjusted by the height of regulating the coloring agent container.
3, beneficial effect: analog demenstration method of the present invention is simple, dyestuff only needs common ink to get final product, and it is very low to the requirement of light, only need the ordinary light source illumination to get final product, and the fluid phenomenon broad covered area of energy analog demenstration, the various different behaviors of the continuous change procedure from the laminar flow to the turbulent flow, the situation of obstacles borders layer and wake flow comprise vortex street etc., and can produce very clear, beautiful visual effects.Dyeing apparatus is drawn materials conveniently and low price, and the barrier of insertion only needs common waddy, and container and flexible pipe also can use infusion bottle and woven hose.
Four, description of drawings
Fig. 1 is the structural representation of dyeing apparatus.
Fig. 2 is the design sketch of the vortex that forms in the boundary layer.
Fig. 3 is the design sketch of the trace of liquid wake flow formation.
Five, embodiment
Fluid phenomenon two-dimensional analog demenstration method of the present invention, it may further comprise the steps:
1) on simulation demonstrating apparatus, forms the liquid film that flows;
2) inject dyeing apparatus with common ink as coloring agent;
3) in the embolus insertion liquid film with dyeing apparatus liquid film is dyeed;
4) use ordinary light source direct irradiation liquid film and observe fluid phenomenon by equipment such as video camera, cameras.
Be the dyeing apparatus of realizing fluid phenomenon two-dimensional analog demenstration method as described in Figure 1, it comprises container 1, flexible pipe 2 and the embolus 3 that loads coloring agent, container 1 is an infusion bottle, the inlet of flexible pipe 2 is connected container 1 lower part outlet place, the liquid outlet of flexible pipe 2 is connected to infusion niidl 6, side at embolus 3 is provided with stria 4 vertically, is provided with the center pit 5 that communicates with stria 4 at an end of embolus 3, and infusion niidl 6 inserts in the center pits 5.During use, only need container 1 is suspended on embolus 3 tops, and will get final product in the embolus 3 insertion liquid films 7.
Adopt the present invention continuous change procedure, the situation of obstacles borders layer and the various different behaviors of wake flow of analog demenstration from the laminar flow to the turbulent flow to comprise vortex street etc., and can produce very clear, beautiful visual effects.As Fig. 2, shown in Figure 3, the design sketch that is to use the design sketch that forms vortex behind the present invention in fluid boundary layer and liquid wake flow to form trace can be seen the vortex street of the beauty that details in the boundary layer and wake flow produce clearly from figure.
Claims (5)
1, a kind of fluid phenomenon two-dimensional analog demenstration method is characterized in that it may further comprise the steps:
1) on simulation demonstrating apparatus, forms the liquid film that flows;
2) coloring agent is injected dyeing apparatus;
3) with the embolus inserting step 1 of dyeing apparatus) liquid film in liquid film is dyeed;
4) use ordinary light source direct irradiation liquid film and by facilities for observation to observe fluid phenomenon.
2, fluid phenomenon two-dimensional analog demenstration method according to claim 1 is characterized in that: the coloring agent described step 2) is an ink.
3, a kind of dyeing apparatus of realizing the described fluid phenomenon two-dimensional analog demenstration method of claim 1 is characterized in that: it comprises container (1), flexible pipe (2) and the embolus (3) that loads coloring agent; Side at embolus (3) is provided with stria (4) vertically, is provided with the center pit (5) that communicates with stria (4) at an end of embolus (3), and center pit (5) links to each other with container (1) by flexible pipe (2).
4, special dyeing apparatus according to claim 3 is characterized in that: the liquid outlet of described flexible pipe (2) is connected to infusion niidl (6), and infusion niidl (6) inserts in the center pit (5).
5, special dyeing apparatus according to claim 3 is characterized in that: described embolus (3) is wooden embolus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510094337A CN100580744C (en) | 2005-09-13 | 2005-09-13 | Fluid phenomenon two-dimensional analog demenstration method and special dyeing apparatus thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510094337A CN100580744C (en) | 2005-09-13 | 2005-09-13 | Fluid phenomenon two-dimensional analog demenstration method and special dyeing apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1741093A true CN1741093A (en) | 2006-03-01 |
| CN100580744C CN100580744C (en) | 2010-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200510094337A Expired - Fee Related CN100580744C (en) | 2005-09-13 | 2005-09-13 | Fluid phenomenon two-dimensional analog demenstration method and special dyeing apparatus thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107085996A (en) * | 2017-06-28 | 2017-08-22 | 天津中德应用技术大学 | Fluid demonstrating experiment device |
| CN110867124A (en) * | 2019-12-11 | 2020-03-06 | 深圳大学 | System for stabilizing soap bubbles |
| CN111145619A (en) * | 2019-12-11 | 2020-05-12 | 深圳大学 | Two-dimensional vortex demonstration system and method based on thermal convection method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19754636A1 (en) * | 1997-12-09 | 1999-06-10 | Mze Engineering Fuer Verfahren | Process for applying a colored decoration from sublimable emulsion paints |
| JP4595337B2 (en) * | 2004-02-06 | 2010-12-08 | 東洋製罐株式会社 | Method for producing negative electrode in dye-sensitized solar cell |
-
2005
- 2005-09-13 CN CN200510094337A patent/CN100580744C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107085996A (en) * | 2017-06-28 | 2017-08-22 | 天津中德应用技术大学 | Fluid demonstrating experiment device |
| CN110867124A (en) * | 2019-12-11 | 2020-03-06 | 深圳大学 | System for stabilizing soap bubbles |
| CN111145619A (en) * | 2019-12-11 | 2020-05-12 | 深圳大学 | Two-dimensional vortex demonstration system and method based on thermal convection method |
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| Publication number | Publication date |
|---|---|
| CN100580744C (en) | 2010-01-13 |
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Granted publication date: 20100113 Termination date: 20100913 |