CN102044184B - Fluid flow curve observation experiment device - Google Patents
Fluid flow curve observation experiment device Download PDFInfo
- Publication number
- CN102044184B CN102044184B CN2010106107860A CN201010610786A CN102044184B CN 102044184 B CN102044184 B CN 102044184B CN 2010106107860 A CN2010106107860 A CN 2010106107860A CN 201010610786 A CN201010610786 A CN 201010610786A CN 102044184 B CN102044184 B CN 102044184B
- Authority
- CN
- China
- Prior art keywords
- pipe
- main flow
- water tank
- porous disc
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 26
- 238000002474 experimental method Methods 0.000 title claims abstract description 20
- 238000001595 flow curve Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 230000000007 visual effect Effects 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 3
- 238000005192 partition Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
Images
Landscapes
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a fluid flow curve observation experiment device, which comprises a colorized liquid bottle connected with a main flow pipe, a main flow pipe valve, a water tank, a horizontally arranged transparent exposed pipe, a flow meter and a ball valve, wherein the flow meter and the ball valve are arranged at the tail part of the transparent exposed pipe; a porous disc is arranged at the entrance of the horizontally arranged transparent exposed pipe; a plurality of branch pipes connected with the main flow pipe are arranged in the water tank; the lower parts of the plurality of branch pipes are bent and are inserted into and connected with the entrance of the horizontally arranged transparent exposed pipe through the porous disc; the upper end parts of the plurality of branch pipes are provided with branch pipe control valves respectively; the colorized liquid bottle is arranged on the main flow pipe connected with the plurality of branch pipes; and an overflow device consisting of a partition board, an overflow water channel and a bottom water outlet is arranged on one side in the water tank. Through a plurality of laminar flows, the change condition of a boundary layer can be observed; and previous experimental phenomena can be observed, and in one experiment, the flowing phenomenon and speed comparison phenomenon of laminar flows can be observed at the same time.
Description
Technical field
The present invention relates to a kind of fluid flow curve observation experiment device, be particularly useful for the teaching of fluid mechanics fluid flow phenomena.
Background technology
Britain scientist Reynolds (Reynolds) finds that through experiment there are two kinds of diverse fluidised forms of inner structure in liquid in flowing: laminar flow and turbulent flow.When rate of flow of fluid hour, a fluid particle streamwise is done the motion of one dimension, is that this nowed forming of laminar flow is called laminar flow or viscous flow with not having mixing of macroscopic view between fluid around it.After rate of flow of fluid increases to certain value, fluid particle the flowing on flow direction, also do motion at random to other direction, promptly have the irregular fluctuation of fluid particle, this flow morphology is called turbulent flow.The differentiation of fluid flow pattern with the dimensionless number reynolds number Re as criterion.In the teaching of knowledge, often adopt the reynolds experiment device in this section, promptly through analysis to the different conditions of color water in pipe, laminar flow and turbulent phenomenon when observing liquid flow.Through this experiment; Can let the student deepen understanding to the different fluidised forms of pipe stream; Distinguish the characteristic of two kinds of different fluidised forms, get the condition that two kinds of fluidised forms produce clear, analyze the rule that the pipe fluidised form transforms; The rule of verifying the journey loss of flood peak of different fluidised forms lower edge is different, and further grasps the kinematics characteristic and the dynamics of laminar flow, two kinds of fluidised forms of turbulent flow.
At present, the reynolds experiment instructional device that is adopted in the teaching is by the water tank that can keep constant water level, test pipe and can inject the compositions such as part of colored liquid.During experiment, open outlet valve, and open the little valve on the colored liquid box connecting pipe, look liquid can flow in the pipe, demonstrates laminar flow or disturbed flow condition.Laminar flow when this device can be observed liquid flow and turbulent phenomenon; But this device one is the fluid flow phenomena that can only reflect the pipeline center place; And can only reflect flowing of fluid from the one dimension angle; The fluid of its elsewhere of pipeline flow can only and the like, the 2nd, can not reflect that at one time the fluid on pipeline is radial and axial respectively is the problem of what flow state.
Summary of the invention
The objective of the invention is to overcome the weak point in the prior art; A kind of fluid flow curve observation experiment devices and methods therefor is provided; Through control linkage at the transparent flow of looking a plurality of the colored liquid feed liquor arms of the mouth of pipe; Can not only observe the form that fluid flows, the flow curve in the time of can also observing fluid and flow.
For realizing above-mentioned purpose; Fluid flow curve observation experiment device of the present invention; Comprise the colored liquid storage bottle, main flow pipe valve, water tank, the horizontally disposed visual transparent tube that link to each other with main flow pipe, be located at the flowmeter and the ball valve of visual transparent tube afterbody, described horizontally disposed visual transparent tube porch is provided with porous disc; Be provided with many arms that link to each other with main flow pipe in the water tank; The lower knuckle of many arms is connected horizontally disposed visual transparent mouth of pipe place through the porous disc plug-in mounting, and the upper end of many arms is provided with the arm operation valve respectively, and colored liquid storage bottle is located on the main flow pipe that is connected with many arms; A side is provided with the overflow mechanism that is made up of dividing plate, overflow tank and bottom discharge mouth in the water tank.
The cross arrangement of Kong Chengcheng on the described porous disc; The radical of described many arms and the hole count of porous disc are complementary.
Beneficial effect: the present invention can observe the situation of change in boundary layer through a plurality of laminar flows, not only can accomplish and observe the former experiments phenomenon, and can see Laminar Flow phenomenon and laminar flow velocity ratio phenomenon simultaneously through experiment once.Compare with present reynolds experiment device, have following advantage:
The all functions that 1, can have present device are such as the observation of laminar flow, turbulent flow etc.;
2, can observe different nowed forming flow curves and mobile curved surface intuitively;
3, can observe the generation and the development in boundary layer intuitively.
Description of drawings
Fig. 1 is a fluid flow curve observation experiment apparatus structure synoptic diagram of the present invention;
Fig. 2 is porous disc structure one synoptic diagram of the present invention;
Fig. 3 is porous disc structure two synoptic diagram of the present invention.
Among the figure: 1-colored liquid storage bottle, 2-main flow pipe valve, 3-arm valve, 4-overflow mechanism, 5-arm, 6-water tank, the visual transparent tube of 7-, 8-ball valve, 9-porous disc.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are done further to describe:
Fluid flow curve observation experiment device of the present invention mainly is made up of colored liquid storage bottle 1, main flow pipe valve 2, overflow mechanism 4, many arms 5, water tank 6, horizontally disposed visual transparent tube 7 and the flowmeter and the ball valve 8 that are located at visual transparent tube 7 afterbodys.Colored liquid storage bottle 1 is connected main flow pipe one end, and the main flow pipe valve 2 of control total flow is housed on the main flow pipe, and the main flow pipe lower end is connected with a plurality of arms 5; Be equipped with an arm valve 3 on each arm 5; Be provided with the wherein horizontally disposed visual transparent tube 7 of insertion in the water tank 6, horizontally disposed visual transparent tube 7 porch are provided with a porous disc 9, and many arms 5 insert in the water tank 6; The lower knuckle of many arms 5 porous disc 9 plug-in mountings that warp is identical with its radical respectively are connected 7 mouthfuls of places of horizontally disposed visual transparent tube; The upper end of every arm 5 is equipped with arm operation valve 3, and a side is provided with the overflow mechanism 4 that is made up of dividing plate, overflow tank and bottom discharge mouth in the water tank 6, keeps stable with the liquid level that keeps water in the casing; Thereby make that under the same valve aperture flow velocity in the level vial can be stablized.The cross arrangement of Kong Chengcheng on the porous disc 9; The hole count of the radical of many arms 5 and porous disc 1 is complementary, and porous disc shown in Figure 2 is 5 holes; Porous disc shown in Figure 3 is 9 holes.The caliber of many arms 5 is identical, and less than 10mm; The volume of colored liquid storage bottle 1 is more than 50ml.Middle tubule will be positioned at the center of level vial 7, and other several pipes are distributed on certain same circumference at level vial 7 centers.The end of level vial 7 is connected with a ball valve 8 and a flowmeter.Ball valve 8 is used to regulate the flow velocity of water, realizes the change of laminar flow, turbulent flow, and flowmeter is used for metering, and data on flows can be used for the quantitative Analysis of Reynolds number.
Claims (3)
1. fluid flow curve observation experiment device; It comprises colored liquid storage bottle (1), main flow pipe valve (2), water tank (6), the horizontally disposed visual transparent tube (7) that links to each other with main flow pipe; Be located at the flowmeter and the ball valve (8) of visual transparent tube (7) afterbody; It is characterized in that: said horizontally disposed visual transparent tube (7) porch is provided with porous disc (9); Be provided with the many arms (5) that link to each other with main flow pipe in the water tank (6); The lower knuckle of many arms (5) is connected horizontally disposed visual transparent tube (7) mouthful place through porous disc (9) plug-in mounting, and the upper end of many arms (5) is provided with the arm operation valve respectively, and colored liquid storage bottle (1) is located on the main flow pipe that is connected with many arms (5); A side is provided with the overflow mechanism (4) that is made up of dividing plate, overflow tank and bottom discharge mouth in the water tank (6).
2. fluid flow curve observation experiment device according to claim 1, it is characterized in that: the hole on the described porous disc (9) is cross arrangement.
3. fluid flow curve observation experiment device according to claim 1 is characterized in that: the hole count of the radical of described many arms (5) and porous disc (9) is complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106107860A CN102044184B (en) | 2010-12-29 | 2010-12-29 | Fluid flow curve observation experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106107860A CN102044184B (en) | 2010-12-29 | 2010-12-29 | Fluid flow curve observation experiment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102044184A CN102044184A (en) | 2011-05-04 |
| CN102044184B true CN102044184B (en) | 2012-07-25 |
Family
ID=43910285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106107860A Expired - Fee Related CN102044184B (en) | 2010-12-29 | 2010-12-29 | Fluid flow curve observation experiment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102044184B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104778880B (en) * | 2015-03-27 | 2017-05-03 | 浙江大学 | Double-orifice-plate pressure stabilization and electrically-controlled colored water supply type Reynolds experiment instrument and method thereof |
| CN104794959A (en) * | 2015-03-27 | 2015-07-22 | 余启佳 | Fluid natural laminar flow motion observation device |
| CN104776291A (en) * | 2015-03-27 | 2015-07-15 | 浙江大学 | Throttle type laminar experiment pressure stabilizer and method thereof |
| CN104751730B (en) * | 2015-03-27 | 2017-11-17 | 杭州源流科技有限公司 | A kind of bypass type laminar flow experiment voltage-stablizer and its method |
| CN104778881A (en) * | 2015-03-27 | 2015-07-15 | 浙江大学 | Throttling type bistable on-way resistance experiment instrument and method thereof |
| CN106781901A (en) * | 2016-11-29 | 2017-05-31 | 榆林学院 | A kind of fluid velocity distribution experiments instrument and its application method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051427A (en) * | 2007-05-10 | 2007-10-10 | 西南交通大学 | Reynolds test instrument |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0327863D0 (en) * | 2003-12-02 | 2004-01-07 | Univ Heriot Watt | Electrochemical sensor |
-
2010
- 2010-12-29 CN CN2010106107860A patent/CN102044184B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051427A (en) * | 2007-05-10 | 2007-10-10 | 西南交通大学 | Reynolds test instrument |
Non-Patent Citations (2)
| Title |
|---|
| 唐永洁.流态实验装置的改进.《力学与实践》.1993,第15卷(第3期),65-67. * |
| 王松等.对雷诺实验装置的改进与创新.《应用科技》.2004,第31卷(第8期),53-57. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102044184A (en) | 2011-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102044184B (en) | Fluid flow curve observation experiment device | |
| CN204576913U (en) | A kind of Multifunction hydrodynamic calculations platform | |
| CN201804480U (en) | Reynolds experiment device | |
| BRPI0809336A2 (en) | VALVE FOR DOSAGE OF VISCULATE FLUIDS, IN PARTICULAR FOR PAINT DOSAGE | |
| CN108877429A (en) | A kind of hydrodynamics comprehensive experimental device | |
| CN101793888B (en) | Experimental device for forming jet flow by drifting water with high-speed airflow and generating supersaturated total dissolved gas | |
| CN114838912A (en) | Particle scattering device, system and particle scattering method | |
| Chan et al. | The numerical investigation on the effects of aspect ratio and cross-sectional shape on the wake structure behind a cantilever | |
| CN113077691B (en) | Experiment teaching device for researching object streaming problem | |
| CN103537194B (en) | Gaseous diffuser | |
| CN111188816B (en) | Flow distribution method of flow divider based on Venturi effect and flow divider structure | |
| CN105741891B (en) | Reactor control rod guide pipe by-pass flow test model and test method | |
| CN106390863A (en) | High-distribution-uniformity calandria liquid distributor with liquid outlets of different diameters | |
| CN206516192U (en) | Fluid velocity distribution experiments instrument | |
| CN104930677B (en) | Fan-shaped total cross-section spreads hydrophone | |
| CN211779240U (en) | Circulation flow distribution valve | |
| CN106485990B (en) | A kind of bernoulli equation experiment instrument | |
| CN108360452B (en) | Water inlet method for river model test | |
| CN204557883U (en) | The automatically controlled supply type reynolds test instrument of a kind of spectacle plate voltage regulation type colored water | |
| CN205302773U (en) | A automatically controlled feeding device for throwing add solution | |
| CN105318030A (en) | Ball valve suitable for gas-liquid two-phase flow | |
| Coetzer et al. | An experimental investigation into the turbulent-flow hydraulics of small circular holes in plastic pipes | |
| CN203745179U (en) | Simple and visible gas-liquid two-phase flow mixed flowing device | |
| CN204061968U (en) | A kind of ball valve of applicable gas-liquid two-phase flow | |
| CN213275514U (en) | Experimental device for be used for monitoring submerged plant growth situation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20141229 |
|
| EXPY | Termination of patent right or utility model |