CN109994021B - Laminar flow physical simulation test water tank system capable of simulating background flow velocity - Google Patents
Laminar flow physical simulation test water tank system capable of simulating background flow velocity Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 227
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 238000004088 simulation Methods 0.000 title claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 118
- 238000005192 partition Methods 0.000 claims abstract description 21
- 238000000926 separation method Methods 0.000 claims description 46
- 230000000087 stabilizing effect Effects 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- 238000013517 stratification Methods 0.000 abstract description 15
- 238000011160 research Methods 0.000 abstract description 7
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
一种能够模拟背景流速的分层流物理模拟试验水槽系统，分层水槽内首端设置有上层进水井、下层进水井，位于上层进水井和下层进水井出水侧的首端稳流消波装置，上层进水井和下层进水井连接首端水平分隔板的一端。分层水槽内的尾端设置有上层出水井、下层出水井，位于上层出水井和下层出水井进水侧的尾端稳流消波装置，上层出水井和下层出水井连接尾端水平分隔板的一端。上层进水井通过上层流体循环管路系统与上层出水井相连接，下层进水井通过下层流体循环管路系统与下层出水井相连接。本发明可用于湖库温度分层、海洋密度分层、两层流体界面内波等物理模拟试验研究，为分层流的物理模拟提供多功能试验平台，更好地满足分层流的研究需求。
A layered flow physical simulation test water tank system capable of simulating background flow velocity. The head end of the layered water tank is provided with an upper-layer water inlet well and a lower-layer water inlet well, and the head end located on the water outlet side of the upper-layer water inlet well and the lower layer water inlet well is arranged to stabilize the flow and eliminate waves. The upper water inlet well and the lower water inlet well are connected to one end of the horizontal partition plate at the head end. The tail end of the layered water tank is provided with an upper water outlet well and a lower water outlet well, and the tail end flow stabilization and wave elimination device is located on the water inlet side of the upper water outlet well and the lower water outlet well. The upper water outlet well and the lower layer water outlet one end of the board. The upper water inlet well is connected with the upper water outlet well through the upper layer fluid circulation pipeline system, and the lower layer water inlet well is connected with the lower layer water outlet well through the lower layer fluid circulation pipeline system. The invention can be used for physical simulation test research such as lake-reservoir temperature stratification, ocean density stratification, two-layer fluid interface internal wave, etc., provides a multifunctional test platform for the physical simulation of stratified flow, and better meets the research needs of stratified flow .
Description
Technical Field
The invention relates to a laminar flow physical simulation test water tank system. In particular to a stratified flow physical simulation test water tank system capable of simulating background flow velocity.
Background
Fluid stratification is a common natural phenomenon, mainly occurring in areas such as oceans, lakes, reservoirs, estuaries and the like, and mainly caused by water density differences due to different temperatures, solute contents, sediment contents and the like of water bodies at different depths. The stratified flow has important influence on the aspects of hydraulic engineering construction, ecological environment protection, national production and life and the like. Temperature stratification can inhibit the exchange of water substances, so that the water environment is deteriorated; the water quality of lakes, reservoirs and other water sources can directly influence industrial and agricultural production and resident life; the survival and propagation of downstream fishes are influenced by the abnormal let-down water temperature caused by reservoir temperature stratification; the balance between reservoir sedimentation and downstream channel scouring can be improved by utilizing the density flow; the seawater at the river mouth is traced upwards to form a saline water wedge, which influences the urban water at both banks; the temperature and salinity stratification of the ocean is one of the important influencing factors of the physical environment of the ocean. Therefore, the development of the layered fluid research has important values in the aspects of engineering construction, ecological environment, production and life and the like.
The physical simulation method is an important means for researching the stratified flow, and various different types of test water tanks are used for simulating the stratified flow at home and abroad at present. For example, the national institute of technology and technology for building, west and China uses a temperature stratification test water tank to simulate the temperature stratification of lakes and reservoirs; the Shanghai transportation university utilizes a gravity type layered water tank system to simulate a seawater density layered environment; the China oceanic university develops a large amount of simulation research on laminar flow by using a density layered water tank; the university of johns hopkins simulated the internal wave of stratified fluid using a dense stratified water tank. However, the existing stratified flow test water tank system often has the limitation of single function, and the stratified flow cannot be simulated and the flow making function cannot be realized. In practical situations, the phenomenon of fluid stratification often exists in a certain velocity field, for example, density stratification of seawater and tides coexist, the transition of density stratification and the stratified flow formed at the river mouth have certain flow velocity, and the stratification fluid interface fluctuation is also often the result of wave-flow interaction. Therefore, in order to perform physical simulation test and research of stratified fluid more accurately, a stratified flow physical simulation water tank system capable of simulating fluid stratification and background flow rate simultaneously is urgently needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a stratified flow physical simulation test water tank system which can simulate background flow velocity and realize the flow making function while simulating stratified flow.
The technical scheme adopted by the invention is as follows: a stratified flow physical simulation test water tank system capable of simulating background flow rate comprises a stratified water tank and is characterized in that an upper layer water inlet well, a lower layer water inlet well and a head end steady flow wave-absorbing device positioned on the water outlet side of the upper layer water inlet well and the lower layer water inlet well are arranged at the head end of the stratified water tank, the upper layer water inlet well and the lower layer water inlet well are connected with one end of a head end horizontal separation plate, a water outlet channel of the upper layer water inlet well and a water outlet channel of the lower layer water inlet well are formed by the head end horizontal separation plate, the other end of the head end horizontal separation plate horizontally penetrates through the middle of the head end steady flow wave-absorbing device and is positioned on the water outlet side of the head end steady flow wave-absorbing device, an upper layer water outlet well, a lower layer water outlet well and a tail end steady flow wave-absorbing device positioned on the water inlet side of the upper layer water outlet well and the lower layer water outlet well are connected with, and a water inlet channel of an upper layer water outlet well and a water inlet channel of a lower layer water outlet well are formed through the tail end horizontal separation plate, the other end of the tail end horizontal separation plate penetrates through the tail end steady flow wave damping device and is positioned on the water inlet side of the tail end steady flow wave damping device, the upper layer water inlet well is connected with the upper layer water outlet well through an upper layer fluid circulation pipeline system, and the lower layer water inlet well is connected with the lower layer water outlet well through a lower layer fluid circulation pipeline system.
Upper intake well and lower floor's intake well between cut apart through head end longitudinal separation board to, the upper strata intake well forms independent well structure through the head end upper strata fluid horizontal separation board that is located lower part, the lower floor's intake well forms independent well structure through the head end lower floor fluid horizontal separation board that is located upper portion, wherein, the top of head end upper strata fluid horizontal separation board is connected head end horizontal separation board, form the water outlet channel, the bottom of head end lower floor fluid horizontal separation board is connected head end horizontal separation board, form water outlet channel down, the upper strata intake well in be provided with the upper layer fluid water inlet of connecting the water outlet of upper layer fluid circulation pipe-line system, the lower floor intake well in be provided with the lower floor's fluid water inlet of the water outlet of connecting lower floor's fluid circulation pipe-line system.
The upper layer fluid water inlet and the lower layer fluid water inlet are of porous energy dissipation structures.
Upper strata outlet well and lower floor's outlet well between cut apart through tail end longitudinal separation board to, upper strata outlet well forms independent well structure through the tail end upper strata fluid horizontal separation board that is located the lower part, lower floor's outlet well forms independent well structure through the tail end lower floor fluid horizontal separation board that is located the upper portion, wherein, the top of tail end upper strata fluid horizontal separation board connect tail end horizontal separation board, form the passageway of intaking, the bottom of tail end lower floor fluid horizontal separation board connect tail end horizontal separation board, form the passageway of intaking down, upper strata outlet well in be provided with the upper layer fluid delivery port who connects the inlet port of upper layer fluid circulation pipe-line system, lower floor's outlet well in be provided with the lower floor's fluid delivery port of connecting the inlet port of lower floor's fluid circulation pipe-line system.
The upper layer fluid water outlet and the lower layer fluid water outlet are of porous energy dissipation structures.
The upper fluid circulation pipeline system and the lower fluid circulation pipeline system have the same structure, and are sequentially arranged on the pipeline at the tail end side by the water inlet side: tail end service valve, tail end festival system valve and tubing pump begin to set gradually by the side of intaking on the pipeline of head end side: the pipeline pump comprises a flow control valve, a flow meter, a head end check valve and a head end overhaul valve, wherein the pipeline pump is connected with a backflow regulating valve in parallel.
The head end flow stabilizing and wave absorbing device and the tail end flow stabilizing and wave absorbing device are identical in structure and respectively comprise a flow stabilizing tube array, a water inlet sponge layer positioned on the water inlet side of the flow stabilizing tube array and a water outlet sponge layer positioned on the water outlet side of the flow stabilizing tube array.
The stratified flow physical simulation test water tank system capable of simulating the background flow velocity can be used for preparing temperature or salinity stratified flow with different water depth ratios of upper and lower fluid, simulating uniform background flow velocity with the same average flow velocity of the upper and lower fluid and shearing background flow velocity with different flow velocities of the upper and lower fluid, realizing a flow making function while simulating the stratified flow, simulating the stratified flow with the uniform or shearing background flow velocity, being used for physical simulation test researches such as lake and reservoir temperature stratification, ocean density stratification, two-layer fluid interface internal wave and the like, providing a multifunctional test platform for the physical simulation of the stratified flow, and better meeting the research requirements of the stratified flow.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a stratified flow physical simulation test flume system capable of simulating background flow rate according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a bottom view of FIG. 1;
FIG. 5 is a cross-sectional view A-A of FIG. 2;
FIG. 6 is a cross-sectional view B-B of FIG. 3;
FIG. 7 is a diagram of a layered fluid embodiment prepared in accordance with an example;
FIG. 8 is a cross-sectional view of the density of the layered fluid prepared in the examples.
In the drawings
1: a layered water tank 2: upper layer water inlet well
3: lower inlet well 4: head end steady flow wave-absorbing device
4.1: flow stabilizing tube array 4.2: intake sponge layer
4.3: effluent sponge layer 5: upper layer water outlet well
6: a lower water outlet well 7: tail end steady flow wave-absorbing device
7.1 Steady flow tube array 7.2: intake sponge layer
7.3: effluent sponge layer 8: upper fluid circulation pipeline system
8.1: tail end service valve 8.2: tail end check valve
8.3: pipeline pump 8.4: back flow regulating valve
8.5: flow control valve 8.6: flow meter
8.7: head end check valve 8.8: head end maintenance valve
9: lower fluid circulation pipe system 9.1: tail end maintenance valve
9.2: tail check valve 9.3: pipeline pump
9.4: reflux regulating valve 9.5: flow control valve
9.6: and (4) flow meter 9.7: head end check valve
9.8: head end service valve 10: head end horizontal dividing plate
11: tail end horizontal partition plate 12: head end longitudinal splitter plate
13: head end upper fluid transverse separator plate 14: head end lower layer fluid transverse partition plate
15: upper fluid inlet 16: lower fluid inlet
17: tail end longitudinal partition plate 18: transverse partition plate for upper fluid at tail end
19: tail end lower deck fluid transverse divider 20: upper fluid outlet
21: lower layer fluid outlet
Detailed Description
The present invention will be described in detail with reference to the following embodiments and accompanying drawings, which are directed to a stratified flow physical simulation test flume system capable of simulating background flow rate.
As shown in fig. 1, 2, 3, 5 and 6, the layered flow physical simulation test water tank system capable of simulating background flow rate comprises a layered water tank 1, wherein the layered water tank 1 is a steel structure frame, the wall surface of the layered water tank is made of toughened glass, the bottom of the layered water tank is made of a PVC plate, and a circulating pipeline system is installed at the bottom of the layered water tank. The water inlet device comprises a layered water tank 1, and is characterized in that an upper layer water inlet well 2, a lower layer water inlet well 3 and a head end steady flow wave-absorbing device 4 positioned at the water outlet side of the upper layer water inlet well 2 and the lower layer water inlet well 3 are arranged at the head end in the layered water tank 1, the upper layer water inlet well 2 and the lower layer water inlet well 3 are connected with one end of a head end horizontal partition plate 10, a water outlet channel of the upper layer water inlet well 2 and a water outlet channel of the lower layer water inlet well 3 are formed through the head end horizontal partition plate 10, the other end of the head end horizontal partition plate 10 horizontally penetrates through the middle part of the head end steady flow wave-absorbing device 4 and is positioned at the water outlet side of the head end steady flow wave-absorbing device 4, an upper layer water outlet well 5, a lower layer water outlet well 6 and a tail end steady flow wave-absorbing device 7 positioned at the water inlet side of the upper layer water outlet well 5, and through tail end horizontal separation board 11 form the inhalant canal of upper strata outlet well 5 and the inhalant canal of lower floor's outlet well 6, the other end of tail end horizontal separation board 11 runs through the middle part of tail end stationary flow wave damper 7, is located the income water side of tail end stationary flow wave damper 7, upper strata inlet well 2 through upper fluid circulation pipe-line system 8 with upper strata outlet well 5 is connected, lower floor's inlet well 3 is connected with lower floor's outlet well 6 through lower floor's fluid circulation pipe-line system 9.
As shown in fig. 2, 3, 5 and 6, the upper layer water inlet well 2 and the lower layer water inlet well 3 are divided by a head end longitudinal separation plate 12, and the upper layer water inlet well 2 forms an independent water well structure through an upper layer fluid transverse separation plate 13 positioned at the head end of the lower part, the lower inlet well 3 forms an independent well structure through a head end lower fluid transverse separation plate 14 positioned at the upper part, wherein, the top end of the head end upper layer fluid transverse separation plate 13 is connected with the head end horizontal separation plate 10 to form an upper water outlet channel, the bottom end of the head end lower layer fluid transverse partition plate 14 is connected with the head end horizontal partition plate 10 to form a lower water outlet channel, an upper fluid inlet 15 connected with the water outlet of the upper fluid circulating pipeline system 8 is arranged in the upper water inlet well 2, and a lower-layer fluid water inlet 16 connected with a water outlet port of the lower-layer fluid circulation pipeline system 9 is arranged in the lower-layer water inlet well 3. The upper layer fluid water inlet 15 and the lower layer fluid water inlet 16 are of porous energy dissipation structures. The kinetic energy of the fluid at the water inlet can be effectively reduced, and the flow velocity of the fluid can be dispersed; after the fluid flows into the water inlet well from the water inlet, the upper layer fluid is guided into the upper layer of the water tank through the water inlet well, and the lower layer fluid is guided into the lower layer of the water tank through the water inlet well;
as shown in fig. 2, 3, 5 and 6, the upper layer of effluent wells 5 and the lower layer of effluent wells 6 are divided by a tail end longitudinal separation plate 17, and the upper layer water outlet well 5 forms an independent well structure through an upper layer fluid transverse partition plate 18 positioned at the tail end of the lower part, the lower water outlet well 6 forms an independent water well structure through a tail end lower fluid transverse partition plate 19 positioned at the upper part, wherein, the top end of the tail end upper layer fluid transverse partition plate 18 is connected with the tail end horizontal partition plate 11 to form an upper water inlet channel, the bottom end of the tail end lower layer fluid transverse partition plate 19 is connected with the tail end horizontal partition plate 11 to form a lower water inlet channel, an upper fluid outlet 20 connected with the water inlet port of the upper fluid circulating pipeline system 8 is arranged in the upper water outlet well 5, and a lower-layer fluid water outlet 21 connected with a water inlet port of the lower-layer fluid circulating pipeline system 9 is arranged in the lower-layer water outlet well 6. The upper layer fluid outlet 20 and the lower layer fluid outlet 21 are porous energy dissipation structures to disperse the flow velocity of the fluid.
As shown in fig. 4, the upper fluid circulation pipeline system 8 and the lower fluid circulation pipeline system 9 have the same structure, and the pipelines at the tail end are sequentially provided with: tail end service valve 8.1/9.1, tail end check valve 8.2/9.2 and tubing pump 8.3/9.3 begin to set gradually by the side of intaking on the pipeline of head end side: the flow control valve 8.5/9.5, the flow meter 8.6/9.6, the head end check valve 8.7/9.7 and the head end service valve 8.8/9.8, wherein the return flow regulating valve 8.4/9.4 is connected in parallel on the pipeline pump 8.3/9.3.
As shown in fig. 1, fig. 2, fig. 3, fig. 5 and fig. 6, the head-end flow stabilizing and wave absorbing device 4 and the tail-end flow stabilizing and wave absorbing device 7 have the same structure, and both comprise a flow stabilizing tube array 4.1/7.1, an inlet sponge layer 4.2/7.2 positioned at the water inlet side of the flow stabilizing tube array 4.1/7.1, and an outlet sponge layer 4.3/7.3 positioned at the water outlet side of the flow stabilizing tube array 4.1/7.1.
Specific examples are given below:
the longitudinal length of the layered water tank 1 adopted in the embodiment is 10m, the width is 0.5m, and the height is 1 m; the longitudinal lengths of the head end horizontal separation plate 10 and the tail end horizontal separation plate 11 are both 1.2m, the installation height is 0.5m, and the longitudinal lengths of the head end steady flow wave absorbing device 4 and the tail end steady flow wave absorbing device 7 are 0.6 m; the pipeline pumps 8.3 and 9.3 adopt centrifugal pumps with rated flow of 40m3H; the valves in the upper layer fluid circulation pipeline system 8 and the lower layer fluid circulation pipeline system 9 are ball valves; the flowmeters 8.6 and 9.6 are electromagnetic flowmeters; preparing density layered water body by using salinity difference, wherein the upper layer water body is tap water, and the actually measured density is 998kg/m3The water depth is 0.3m, and the density of the lower water body is 1004kg/m3The water depth is 0.5 m.
When preparing the layered fluid, the lower high-density water body is prepared first. Closing the flow control valve 9.5, the tail end maintenance valve 9.1, the tail end check valve 9.2 and the head end check valveThe valve 9.7 is externally connected with an upper water pipe, and water enters the lower layer of the water tank from the lower layer water inlet well 3; when the liquid level of the lower water body is flush with the head end horizontal partition plate 10 and the tail end horizontal partition plate 11, closing the head end check valve 9.7; adding a proper amount of industrial salt into the lower water body to ensure that the density of the industrial salt reaches 1004kg/m3Adding a proper amount of red color developing agent to distinguish the upper and lower layers of water bodies, starting a pipeline pump 9.3, uniformly diffusing salt and a coloring agent in the water bodies by utilizing the flow, and then closing the pipeline pump 9.3 to finish the preparation of the lower layer of water body; when preparing the upper-layer low-density water body, closing the flow control valve 8.5, connecting the head-end check valve 8.7 with an external water supply pipe, and enabling the water body to enter the upper layer of the water tank from the upper-layer water inlet well 2, so as to avoid excessive mixing of the upper-layer water body interface and the lower-layer water body interface and ensure that the inflow of the upper-layer water body is small enough; in order to make the upper and lower water interfaces clearer, the tail end check valve 8.2 is opened to make part of the upper layer fluid drain out of the water tank through the upper layer water outlet well 5, and shear flow is formed between the upper and lower fluid interfaces, at this time, the outlet flow of the upper layer water is controlled to be smaller than the inlet flow; and when the depth of the upper water body reaches 0.3m, closing the head end check valve 8.7 and the tail end check valve 8.2, and finishing the preparation of the layered fluid. The layered fluid and density profiles produced in this example are shown in fig. 7 and 8, respectively. In fig. 7, a is a free liquid surface, b is an upper layer low density water body, and c is a lower layer high density water body.
The background flow rate is set according to a specific test working condition, and the flow of the upper layer fluid circulation pipeline system 8 and the flow of the lower layer fluid circulation pipeline system 9 are independently controlled according to a flow regulation scheme; when the flow rates of the upper layer fluid circulation pipeline system 8 and the lower layer fluid circulation pipeline system 9 are both zero, the background flow rate of the stratified flow is zero; the flow of the upper fluid circulation pipeline system 8 and the lower fluid circulation pipeline system 9 is adjusted to ensure that the average flow velocities of the sections of the upper and lower layers of water bodies are the same, so that uniform background flow velocity can be formed; when the average flow velocities of the fluid sections of the upper layer and the lower layer are different, stratified flow with different shear flow velocities can be formed. It should be noted that in order to avoid excessive disturbance of the stratified fluid caused by the flow regulation process, the flow regulation operation should be smooth and slow, and the flow of the circulating pipeline system cannot be suddenly reduced.
Claims (4)
1. The utility model provides a can simulate layering stream physical simulation test basin system of background velocity of flow, includes layering basin (1), its characterized in that, head end in layering basin (1) is provided with upper intake well (2), lower floor's intake well (3) to and be located head end stationary flow wave damper (4) of upper intake well (2) and lower floor's intake well (3) play water side, upper intake well (2) and lower floor's intake well (3) connect the one end of head end horizontal separation board (10), and pass through head end horizontal separation board (10) form the exhalant canal of upper intake well (2) and the exhalant canal of lower floor's intake well (3), the middle part that head end horizontal separation board (10) other end level runs through head end stationary flow wave damper (4) is located the play water side of head end stationary flow wave damper (4), tail end in layering basin (1) is provided with upper strata water outlet well (5), The water-saving device comprises a lower-layer water outlet well (6) and a tail-end steady-flow wave-absorbing device (7) positioned on the water inlet side of an upper-layer water outlet well (5) and a lower-layer water outlet well (6), wherein the upper-layer water outlet well (5) and the lower-layer water outlet well (6) are connected with one end of a tail-end horizontal partition plate (11), a water inlet channel of the upper-layer water outlet well (5) and a water inlet channel of the lower-layer water outlet well (6) are formed through the tail-end horizontal partition plate (11), the other end of the tail-end horizontal partition plate (11) penetrates through the tail-end steady-flow wave-absorbing device (7) and is positioned on the water inlet side of the tail-end steady-flow wave-absorbing device (7), the upper-layer water inlet well (2) is connected with the upper-layer water outlet well (5) through an upper-layer fluid circulation pipeline system (8), and;
the upper layer water inlet well (2) and the lower layer water inlet well (3) are divided by a head end longitudinal separation plate (12), the upper layer water inlet well (2) forms an independent well structure through a head end upper layer fluid transverse separation plate (13) positioned at the lower part, the lower layer water inlet well (3) forms an independent well structure through a head end lower layer fluid transverse separation plate (14) positioned at the upper part, wherein the top end of the head end upper layer fluid transverse separation plate (13) is connected with the head end horizontal separation plate (10) to form an upper water outlet channel, the bottom end of the head end lower layer fluid transverse separation plate (14) is connected with the head end horizontal separation plate (10) to form a lower water outlet channel, an upper layer fluid water inlet (15) connected with a water outlet port of an upper layer fluid circulation pipeline system (8) is arranged in the upper layer water inlet well (2), a lower-layer fluid water inlet (16) connected with a water outlet port of the lower-layer fluid circulating pipeline system (9) is arranged in the lower-layer water inlet well (3);
the upper water outlet well (5) and the lower water outlet well (6) are divided by a tail end longitudinal separation plate (17), the upper water outlet well (5) forms an independent well structure through a tail end upper layer fluid transverse separation plate (18) positioned at the lower part, the lower water outlet well (6) forms an independent well structure through a tail end lower layer fluid transverse separation plate (19) positioned at the upper part, wherein the top end of the tail end upper layer fluid transverse separation plate (18) is connected with the tail end horizontal separation plate (11) to form an upper water inlet channel, the bottom end of the tail end lower layer fluid transverse separation plate (19) is connected with the tail end horizontal separation plate (11) to form a lower water inlet channel, an upper layer fluid water outlet (20) connected with a water inlet port of an upper layer fluid circulation pipeline system (8) is arranged in the upper layer water outlet well (5), a lower-layer fluid water outlet (21) connected with a water inlet port of the lower-layer fluid circulating pipeline system (9) is arranged in the lower-layer water outlet well (6);
the head end flow stabilizing and wave absorbing device (4) and the tail end flow stabilizing and wave absorbing device (7) are identical in structure and respectively comprise a flow stabilizing tube array (4.1/7.1), a water inlet sponge layer (4.2/7.2) positioned on the water inlet side of the flow stabilizing tube array (4.1/7.1) and a water outlet sponge layer (4.3/7.3) positioned on the water outlet side of the flow stabilizing tube array (4.1/7.1).
2. The stratified flow physical simulation test flume system capable of simulating background flow velocity as claimed in claim 1, wherein the upper fluid inlet (15) and the lower fluid inlet (16) are porous energy dissipating structures.
3. The stratified flow physical simulation test flume system capable of simulating background flow rate as claimed in claim 1, wherein the upper fluid outlet (20) and the lower fluid outlet (21) are porous energy-dissipating structures.
4. The stratified flow physical simulation test flume system capable of simulating the background flow rate as claimed in claim 1, wherein the upper fluid circulation pipeline system (8) and the lower fluid circulation pipeline system (9) have the same structure, and the pipelines at the tail end side are sequentially provided with the following components from the water inlet side: tail end service valve (8.1/9.1), tail end check valve (8.2/9.2) and tubing pump (8.3/9.3), set gradually by the intake side on the pipeline of head end side: the system comprises a flow control valve (8.5/9.5), a flow meter (8.6/9.6), a head end check valve (8.7/9.7) and a head end maintenance valve (8.8/9.8), wherein a backflow regulating valve (8.4/9.4) is connected to the pipeline pump (8.3/9.3) in parallel.
Priority Applications (1)
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