CN103018004A - Device and method for measuring hydrodynamic force of fishnet yarn - Google Patents
Device and method for measuring hydrodynamic force of fishnet yarn Download PDFInfo
- Publication number
- CN103018004A CN103018004A CN2012104275502A CN201210427550A CN103018004A CN 103018004 A CN103018004 A CN 103018004A CN 2012104275502 A CN2012104275502 A CN 2012104275502A CN 201210427550 A CN201210427550 A CN 201210427550A CN 103018004 A CN103018004 A CN 103018004A
- Authority
- CN
- China
- Prior art keywords
- measuring
- netting twine
- horizontal
- fore
- force
- 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.)
- Granted
Links
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a device and a method for measuring hydrodynamic force of a fishnet yarn. The device comprises a cuboid-shaped fixing frame; two underwater force measuring devices which are connected with a lower transverse fixing cable are fixed to the bottom surface of one end of the frame; an upper transverse fixing cable is connected between another two underwater force measuring devices which are respectively fixed in clamping grooves at support pillars of the frame in a slide way or fixed to the bottom surface of the other end of the frame; and longitudinal yarns are fixed between the upper transverse fixing cable and the lower transverse fixing cable. The method for measuring the hydrodynamic force of the fishnet yarn comprises the following steps in sequence: adjusting the coming flow and the grids of the yarns to reach any required impulse angles; assembling four corners of the grids of the yarns on the underwater force measuring devices; placing the frame into a sink; and adjusting the positions of the two underwater force measuring devices at the top part of the frame, the length of the longitudinal yarns and the strength of the testing wave flow, so as to obtain the strength of the hydrodynamic force of a single yarn and the hydrodynamic force parameters of the yarn. The device for measuring the hydrodynamic force of the fishnet yarn is simple in structure, easy to assemble and convenient to operate, can be used for measuring the hydrodynamic force of fine yarns, and also can be used for measuring the hydrodynamic force of parts of fishing tools and flexible cylindrical structural matters, such as ropes and nettings.
Description
Technical field
The present invention relates to a kind ofly for measuring fishing with the hydrodynamic apparatus and method of netting twine, belong to the sea fishery technical field.
Background technology
The hydrodynamics of fishing gears performance is one of leading indicator of weighing fishing gear transaction capabilities quality.What consist of the fishery facilities main parts such as net fishing gear, net cage is the etting that is formed by the netting twine braiding.Compare with other ocean engineering structures, the distinguishing feature of netting twine is its flexibility, cause thus the effect very complex between fishing gear (etting) and current, its change of shape influences each other, interdepends with the hydrodynamic force that is subject to, be that hydrodynamic force on the fishing gear (etting) and its shape after stressed is closely related, this is the difficult point that faces on the Study on hydrodynamic performance of fishing gear (etting).
The method of research hydrodynamics of fishing gears mainly contains model test, marine actual measurement and theoretical calculating (main development is numerical simulation in recent years).The tradition mechanics of fishing gear mainly with the net sheet as a whole structure study, by testing definite experimental formula, with this basis of calculating as theory.Because the difference of experiment condition measuring equipment etc., the general limitation of the use of experimental formula is larger.Along with the development of computer technology, combination model test and the theoretical fishing gear numbered analog simulation technology of calculating also are rapidly developed.The fishery facilities hydrodynamic forces such as numerical simulation calculation fishing gear (etting), net cage and shape generally with mesh order pin (a bit of netting twine) as basic building block, by calculating stressed on each order pin, obtain whole stressing conditions.When calculating the hydrodynamic force on the order pin, (compare smooth cylinder, netting twine has the sth. made by twisting line to relate to resistance coefficient, lift coefficient and the sideway force coefficient of netting twine, thereby except resistance with rising, also have side force), when having nonstationary flow (such as wave), also to relate to the inertial force coefficient.Because netting twine is soft, diameter is little and the singularity of structure, the research of its hydrodynamic force coefficient needs accurately test design and measuring equipment, and this respect research yet there are no report.The present relevant achievement in research of the common circle of reference cylinder of these parameters, rete cord aspect is chosen empirical value or is calculated or calculate according to the relation between rete cord and the angle of attack according to the hydrodynamic force coefficient of right cylinder, rete cord and the relation of Reynolds number.This is considered to carry out up to now the one of the main reasons that the mechanics of fishing gear numerical simulation is difficult to reach ideal effect.
Therefore, in order to improve the precision of the fishery facilities Study on hydrodynamic performance result take netting twine (etting) as main body, be necessary to carry out the hydrodynamic measuring method exploitation of tiny netting twine, obtain netting twine hydrodynamic drag coefficient, lift coefficient and sideway force coefficient parameter, calculate and design and produce for the fishery facilities such as net fishing gear, net cage are theoretical and provide support.
Summary of the invention
The purpose of this invention is to provide a kind ofly for measuring the hydrodynamic apparatus and method of netting twine, calculating and design and produce for the fishery facilities such as net fishing gear, net cage are theoretical provides underlying parameter, to overcome the deficiencies in the prior art.
A kind of for measuring the hydrodynamic device of netting twine, comprise four device for measuring force under water, and respectively by the lateral column that (is subjected to first stream for front) before two, front horizontal foundation, front horizontal fore-set, two square frames that lateral column, rear horizontal foundation, backward fore-set form after two is characterized in that described two square frames connect and the fixed frame of formation rectangular shape via two vertical fore-sets; Respectively have together longitudinally draw-in groove in the middle of the lower surface of described two vertical fore-sets; The upper surface two ends of horizontal foundation respectively are fixed with a device for measuring force under water wherein, and described two are connected with lower horizontal antilift wire under water between the device for measuring force; Two other under water device for measuring force be slidingly fixed on respectively in two vertical fore-sets draw-in groove separately, perhaps be individually fixed in the upper surface two ends of rear horizontal foundation, and described rear horizontal foundation moves up and down along rear lateral column, and this described two other also is connected with the upper horizontal antilift wire parallel with lower horizontal antilift wire under water between device for measuring force; Described upper, lower horizontal is to being fixed with the many vertical netting twines that are parallel to each other between the antilift wire.
The cross sectional shape of the draw-in groove of above-mentioned vertical fore-set is dovetail groove.
In order to obtain better effect, above-mentioned forward and backward lateral column, forward and backward horizontal foundation, forward and backward horizontal fore-set and vertically four sides of fore-set all have dovetail groove; And between described forward and backward lateral column and forward and backward horizontal foundation and the forward and backward horizontal fore-set, and be to interconnect by web member between fore-set and two quadras vertically, described web member comprises that a cross section is L shaped turning, the two sides, turning is inserted with bolt, and by the bolt bolt head that embeds draw-in groove each cylinder is interfixed.
Above-mentioned two horizontal antilift wires and and many vertical netting twines consist of the netting twine grids, netting twine grid and device for measuring force composition measuring system under water.Obviously can realize easily adjusting by the height of adjusting above-mentioned rear end foundation the angle of attack of incoming flow and netting twine grid, also can adjust by adjusting the position in the draw-in groove of vertical fore-set of device for measuring force under water the angle of attack of incoming flow and netting twine grid.
Above-mentioned device for measuring force under water can realize by existing device for measuring force, such as six component instrument under water, perhaps land device for measuring force transformed in water and used, and measures netting twine grid stressed (X/Y/Z direction) of three directions in water.
Upper, lower horizontal uses the larger pallial siphuncles of rigidity such as wire rope to antilift wire, fix easily vertical netting twine, and in two maintenance levels between the device for measuring force under water.
Said apparatus is used for measuring the hydrodynamic method of netting twine, it is characterized in that may further comprise the steps:
At first, device for measuring force under water is adjusted to the angle of attack of required incoming flow and netting twine grid;
Secondly, at upper, lower horizontal to being fixed with the many vertical netting twines that are parallel to each other between the antilift wire;
Again four jiaos of netting twine grids are assemblied in be fixed on the framework four under water on the device for measuring force;
Then, framework is placed in the experimental tank, by adjusting two of frame roof under water position, longitudinal network line length and the test wave current size of device for measuring force, measure the hydrodynamic force that the netting twine grid is 0 degree under 90 degree and the different Action of Wave Current at the angle of attack, thereby obtain hydrodynamic force size and the netting twine hydrodynamic parameter of single netting twine.
Vertically netting twine is assemblied in up and down laterally on the antilift wire equably according to certain spacing, adjacent two netting twine spacings greater than its diameter doubly more than, the impact on measurement effect is disturbed in the flow field of avoiding fluid to produce through netting twine.
The present invention is simple in structure, assembling easily, convenient operation, not only can be used for measuring tiny netting twine hydrodynamic force, also can be used for measuring fishing gear parts and the flexible column works hydrodynamic forces such as rope, etting, for research fishing gear parts and fishing gear and similar structures thing hydrodynamics characteristic, provide all new measurement mechanisms and measuring method.
Description of drawings
Fig. 1 is general structure synoptic diagram of the present invention (two under water device for measuring force be fixed in draw-in groove).
Fig. 2 is the cross-sectional structure synoptic diagram of lateral column of the present invention, horizontal foundation, horizontal fore-set or vertical fore-set.
Fig. 3 is the synoptic diagram that each cylinder of the present invention connects by web member.
Fig. 4 is netting twine grid artwork of the present invention.
Fig. 5 be of the present invention two under water device for measuring force be fixed in structural representation on the rear horizontal foundation.
Wherein, 1, anterolateral column, 2, front horizontal foundation, 3, front vertical fore-set, 4, rear lateral column, 5, rear horizontal foundation, 6, rear vertical fore-set, 7, vertical fore-set, 8, draw-in groove, 9, device for measuring force under water, 10, netting twine, 11, lower horizontal antilift wire, 12, upper horizontal antilift wire, 13, web member, 14, bolt.
Embodiment
Shown in Fig. 1～5, a kind of for measuring the hydrodynamic device of netting twine, comprise four device for measuring force 9 under water, and respectively by the lateral column 1 that (is subjected to first stream for front) before two, front horizontal foundation 2, front horizontal fore-set 3, two square frames that lateral column 4, rear horizontal foundation 5, backward fore-set 6 form after two is characterized in that described two square frames connect and the fixed frame of formation rectangular shape via two vertical fore-sets 7; Respectively have together longitudinally draw-in groove 8 in the middle of the lower surface of described two vertical fore-sets 7; The upper surface two ends of horizontal foundation 2 respectively are fixed with a device for measuring force 9 under water wherein, and described two are connected with lower horizontal antilift wire 11 under water between the device for measuring force 9; Two other under water device for measuring force 9 be slidingly fixed on respectively in two vertical fore-sets 7 draw-in groove 8 separately, perhaps be individually fixed in the upper surface two ends of rear horizontal foundation 5, and described rear horizontal foundation 5 moves up and down along rear lateral column 4, and this described two other also is connected with the upper horizontal antilift wire 12 parallel with lower horizontal antilift wire 11 under water between device for measuring force 9; Described upper, lower horizontal is to being fixed with the many vertical netting twines 10 that are parallel to each other between the antilift wire 11,12.
Shown in Fig. 2,3, the cross sectional shape of the draw-in groove 8 of above-mentioned vertical fore-set 7 is dovetail grooves.
Shown in Fig. 1～3, in order to obtain better effect, above-mentioned front and back lateral column 1,4, the horizontal foundation 2 in front and back, 5, the horizontal fore-set 3 in front and back, 6 and vertically four sides of fore-set 7 all have dovetail groove; And between described forward and backward lateral column and forward and backward horizontal foundation and the forward and backward horizontal fore-set, and be to interconnect by web member 13 between fore-set 7 and two quadras vertically, described web member 13 comprises that a cross section is L shaped turning, the two sides, turning is inserted with bolt 14, and by the bolt 14 bolt heads that embed draw-in groove 8 each cylinder is interfixed.Obviously this design be so that can adjust arbitrarily the size of quadra when actual measurement, until adjust to suitable degree, and very easy to use.
Shown in Fig. 1,4 and 5, above-mentioned two horizontal antilift wires 11,12 and the vertical netting twine of Duo Gen 9 consist of the netting twine grids, netting twine grid and device for measuring force 9 composition measuring systems under water.Obviously the height-adjustable incoming flow and the angle of attack of netting twine grid by adjusting above-mentioned rear horizontal foundation 5 also can be adjusted by adjusting the position of device for measuring force 9 in the draw-in groove 8 of vertical fore-set 7 under water the angle of attack of incoming flow and netting twine grid.
Above-mentioned device for measuring force under water 9 realizes by existing device for measuring force, such as six component instrument under water, perhaps land device for measuring force transformed in water and used, and measures netting twine grid stressed (X/Y/Z direction) of three directions in water.
Said apparatus is used for measuring the hydrodynamic method of netting twine, it is characterized in that may further comprise the steps:
At first, device for measuring force 9 under water is adjusted to the angle of attack of required incoming flow and netting twine grid; As described before, can adjust the height of device for measuring force 9 under water by the height of adjusting rear horizontal foundation 5, and then the angle of attack of adjustment incoming flow and netting twine grid, perhaps adjust the angle of attack of incoming flow and netting twine grid by adjusting the position in the draw-in groove 8 of vertical fore-set 7 of device for measuring force 9 under water, can realize the comprehensive adjusting of all angles of incoming flow and the netting twine grid angle of attack, and regulate accurate quick;
Owing to also can adopt web member 13 to connect between each cylinder of the present invention, so that equal capable of regulating mutual alignment between each cylinder is very easy to use;
Secondly, at upper, lower horizontal to being fixed with the many vertical netting twines 10 that are parallel to each other between the antilift wire 11,12;
Just four jiaos of netting twine grids are assemblied in be fixed on the framework four under water on the device for measuring force again;
Then, framework is placed in the experimental tank, by adjusting two of frame roof under water position, vertically netting twine 10 length and the test wave current size of device for measuring force 9, measure the hydrodynamic force that the netting twine grid is 0 degree under 90 degree and the different Action of Wave Current at the angle of attack, thereby utilize prior art to obtain the hydrodynamic force size of single netting twine, parse the netting twine hydrodynamic parameter.
Embodiment
Shown in Fig. 1～5, a kind of for measuring the netting twine hydrodynamic apparatus, by forward and backward lateral column 1,4, forward and backward horizontal foundation 2,5, forward and backward horizontal fore-set 3,6, vertically fore-set 7 consists of fixed frame; Described each cylinder (1-7) structure can be identical, is four middle cylinders that all have dove-tail form draw-in groove 8 in surface such as each post (1-7).Be fixed in the draw-in groove 8 at two ends by L-type web member 13 and bolt 14 thereof between each cylinder (1-7), consist of the rectangular shape fixed frame of measurement mechanism.Have two under water device for measuring force 9 be fixed in the draw-in groove 8 at front end foundation 2 two ends; Adjacent lateral column 1 distance of device for measuring force 9 distances between center line is more preferably greater than more than the 20cm, to reduce the impact of liquid boundary-layer on measuring under water; The front and back laterally long limit of foundation 2,5 (or forward and backward horizontal fore-set 3,6) are Y-direction, and the horizontal direction vertical with Y-direction is directions X, and the Z direction is according to the right-handed helix criterion.
Be positioned at a pair of forward and backward lateral column 1,3 same side of the same side on identical vertical plane, can be used to press close to flume wall, guarantee that the framework vertical direction is consistent with tank vertical direction Z, forward and backward horizontal fore-set 3,6 with horizontal foundation 2,4 with forward and backward lateral column 1,3 vertical, be used for determining that the directions X of device for measuring force 9 under water and incoming flow, unrestrained direction are parallel.Vertically fore-set 7 is fixed on the forward and backward horizontal fore-set 3,6 by the draw-in groove 8 at two ends, consists of measuring fixed frame.
Be fixed on the front horizontal foundation 2 two the lower horizontal antilift wires 11 between the device for measuring force 9 under water, be fixed on backward foundation 4 on two the upper, lower horizontal between the device for measuring force 9 is all parallel with Y-direction to antilift wire 11,12 under water.Upper, lower horizontal uses the larger pallial siphuncles of rigidity such as fine wire ropes to antilift wire 11,12, fix easily vertical netting twine 10, and in two pairs of maintenance levels between the device for measuring force 9 under water up and down.
Vertically netting twine 10 is assemblied in upper, lower horizontal on antilift wire 11,12 equably according to certain spacing, and adjacent two netting twine spacings are greater than more than 10 times of its diameter, and the impact on measurement effect is disturbed in the flow field of avoiding fluid to produce through netting twine.
By adjust the device for measuring force under water 9 on netting twine 10 length and the vertical fore-set draw-in groove 8 of parallel or adjust after the horizontal height of foundation 6 when device for measuring force 9 (assemble two under water), the angle of attack of capable of regulating netting twine grid and current.By different test wave currents is set, can record 0 degree netting twine hydrodynamic force to the 90 degree angle of attack situations, test figure is carried out theoretical analysis, obtain the netting twine hydrodynamic parameter.
Obviously, in practical application, this structure not only can be used for measuring tiny netting twine hydrodynamic force, also can be used for measuring the hydrodynamic forces such as the fishing gear parts such as rope, etting and flexible column works (cable), widens its usable range.When measuring than the thick line cable, can directly use one of bottom under water one at device for measuring force 9 and top under water device for measuring force 9 directly cable is fixed on its two ends and measures.Can not use vertical fore-set 7 in than shallow-water tank, directly device for measuring force 9 is fixed on the rear horizontal fore-set 5 under water, adjusts the angle of measuring object and current by moving rear laterally fore-set 5, carries out experiment measuring.
Claims (4)
1. one kind is used for measuring the hydrodynamic device of netting twine, comprise four device for measuring force (9) under water, and respectively by two anterolateral columns (1), front horizontal foundation (2), front horizontal fore-set (3), two quadras that lateral column after two (4), rear horizontal foundation (5), backward fore-set (6) form is characterized in that described two quadras connect and the fixed frame of formation rectangular shape via two vertical fore-sets (7); Respectively have together longitudinally draw-in groove (8) in the middle of the lower surface of described two vertical fore-sets (7); The upper surface two ends of horizontal foundation (2) respectively are fixed with a device for measuring force (9) under water wherein, and described two are connected with lower horizontal antilift wire (11) under water between the device for measuring force (9); Two other under water device for measuring force (9) be slidingly fixed on respectively in two vertical fore-sets (7) draw-in groove (8) separately, perhaps be individually fixed in the upper surface two ends of rear horizontal foundation (5), and described rear horizontal foundation (5) moves up and down along rear lateral column (4), and this described two other also is connected with the upper horizontal antilift wire (12) parallel with lower horizontal antilift wire (11) under water between device for measuring force (9); Described upper, lower horizontal is to being fixed with the many vertical netting twines (10) that are parallel to each other between the antilift wire (11,12).
2. as claimed in claim 1 for measuring the hydrodynamic device of netting twine, it is characterized in that the cross sectional shape of the draw-in groove (5) of above-mentioned vertical fore-set (7) lower surface is dove-tail.
3. as claimed in claim 1 or 2 for measuring the hydrodynamic device of netting twine, it is characterized in that above-mentioned forward and backward lateral column (1,4), front and back are foundation (2,5) laterally, and four sides of forward and backward horizontal fore-set (3,6) and vertical fore-set 7 all have dovetail groove; And between described forward and backward lateral column (1,4) and forward and backward horizontal foundation (2,5) and the forward and backward horizontal fore-set (3,6), and be to interconnect by web member (13) between fore-set (7) and two quadras vertically, described web member (13) comprises that a cross section is L shaped turning, the two sides, turning is inserted with bolt (14), and by bolt (14) the bolt head that embeds draw-in groove (8) each cylinder is interfixed.
4. utilize the hydrodynamic method of measurement device netting twine claimed in claim 1, it is characterized in that may further comprise the steps:
Device for measuring force (9) is adjusted to the angle of attack of required incoming flow and netting twine grid at first, under water;
Secondly, at upper, lower horizontal to being fixed with the many vertical netting twines (10) that are parallel to each other between the antilift wire (11,12);
Again four jiaos of netting twine grids are assemblied in be fixed on the framework four under water on the device for measuring force (9);
Then, framework is placed in the experimental tank, by adjusting two of frame roof under water position, vertically netting twine (10) length and the test wave current size of device for measuring force (9), measure the hydrodynamic force that the netting twine grid is 0 degree under 90 degree and the different Action of Wave Current at the angle of attack, thereby obtain hydrodynamic force size and the netting twine hydrodynamic parameter of single netting twine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210427550.2A CN103018004B (en) | 2012-10-31 | 2012-10-31 | Device and method for measuring hydrodynamic force of fishnet yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210427550.2A CN103018004B (en) | 2012-10-31 | 2012-10-31 | Device and method for measuring hydrodynamic force of fishnet yarn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103018004A true CN103018004A (en) | 2013-04-03 |
| CN103018004B CN103018004B (en) | 2014-11-26 |
Family
ID=47966863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210427550.2A Expired - Fee Related CN103018004B (en) | 2012-10-31 | 2012-10-31 | Device and method for measuring hydrodynamic force of fishnet yarn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103018004B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843407A (en) * | 2017-12-05 | 2018-03-27 | 西南交通大学 | A kind of clump of piles apparatus for adjusting position for structure hydrodynamic experiment |
| CN110174236A (en) * | 2019-06-14 | 2019-08-27 | 大连海事大学 | Bottom-sitting type multiple degrees of freedom hydrodynamic measurement system based on rope driving |
| CN113203542A (en) * | 2021-05-07 | 2021-08-03 | 中国船舶科学研究中心 | Netting hydrodynamic test device and test method |
| CN114847206A (en) * | 2022-05-31 | 2022-08-05 | 上海交通大学 | Rotatable net device for researching hydrodynamic force |
| CN114894437A (en) * | 2022-06-07 | 2022-08-12 | 上海交通大学 | Test device for researching coupling hydrodynamic characteristics of stand column-netting structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1405756A1 (en) * | 1986-09-18 | 1988-06-30 | Научно-Производственное Объединение По Технике Промышленного Рыболовства | Stand for spatial simulation of models of trawls in flume |
| CN101672741A (en) * | 2008-09-08 | 2010-03-17 | 中国水产科学研究院东海水产研究所 | Method for testing stress and deformation of meshes of fishing net |
| CN102313637A (en) * | 2011-08-12 | 2012-01-11 | 上海交通大学 | Bidirectional forced vibration experimental apparatus for FISHFRAM buoy segment model under action of inclined uniform flow |
-
2012
- 2012-10-31 CN CN201210427550.2A patent/CN103018004B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1405756A1 (en) * | 1986-09-18 | 1988-06-30 | Научно-Производственное Объединение По Технике Промышленного Рыболовства | Stand for spatial simulation of models of trawls in flume |
| CN101672741A (en) * | 2008-09-08 | 2010-03-17 | 中国水产科学研究院东海水产研究所 | Method for testing stress and deformation of meshes of fishing net |
| CN102313637A (en) * | 2011-08-12 | 2012-01-11 | 上海交通大学 | Bidirectional forced vibration experimental apparatus for FISHFRAM buoy segment model under action of inclined uniform flow |
Non-Patent Citations (3)
| Title |
|---|
| WEIHUA SONG等: "Experimental study on the effect of horizontal waves on netting panels", 《FISHERIES SCIENCE》 * |
| 李玉成等: "波浪条件下渔网水动力特性研究", 《中国造船》 * |
| 赵云鹏等: "深水抗风浪网箱水动力学特性研究", 《渔业现代化》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843407A (en) * | 2017-12-05 | 2018-03-27 | 西南交通大学 | A kind of clump of piles apparatus for adjusting position for structure hydrodynamic experiment |
| CN110174236A (en) * | 2019-06-14 | 2019-08-27 | 大连海事大学 | Bottom-sitting type multiple degrees of freedom hydrodynamic measurement system based on rope driving |
| CN113203542A (en) * | 2021-05-07 | 2021-08-03 | 中国船舶科学研究中心 | Netting hydrodynamic test device and test method |
| CN114847206A (en) * | 2022-05-31 | 2022-08-05 | 上海交通大学 | Rotatable net device for researching hydrodynamic force |
| CN114847206B (en) * | 2022-05-31 | 2024-01-12 | 上海交通大学 | Rotatable netting device for studying hydrodynamic force |
| CN114894437A (en) * | 2022-06-07 | 2022-08-12 | 上海交通大学 | Test device for researching coupling hydrodynamic characteristics of stand column-netting structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103018004B (en) | 2014-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103018004B (en) | Device and method for measuring hydrodynamic force of fishnet yarn | |
| CN107090859B (en) | A kind of test method of the multidirectional horizontal bearing capacity of single pile under compound load action | |
| CN204788890U (en) | Full flow field velocity of flow measuring device of laboratory basin experiment | |
| CN110375947B (en) | On-site actual measurement device and test method for body type coefficient of power transmission tower | |
| Zeng et al. | Flow and coherent structures around circular cylinders in shallow water | |
| CN111274728B (en) | Method for analyzing hydro-elastic response of netting and floating body coupling | |
| CN209623995U (en) | A kind of anchoring system simulator of towing basin | |
| Wang et al. | Analytical solution of velocity distribution for flow through submerged large deflection flexible vegetation | |
| Zhang et al. | Dynamic analysis of an array of semi-rigid “sea station” fish cages subjected to waves | |
| CN112146841B (en) | Large-scale structure water power coefficient measuring device and measuring method thereof | |
| CN110320081B (en) | Steel shell concrete separation detection gridding division device | |
| CN107515097A (en) | Anchoring system horizontal rigidity tests multidirectional hierarchical loading device | |
| CN103645105B (en) | A kind of accurate test reinforcing bar is the device of corrosion ratio and method of testing along its length | |
| CN103196515A (en) | Wave and tide level testing device | |
| CN113203542A (en) | Netting hydrodynamic test device and test method | |
| CN107014670A (en) | The test device of the multidirectional horizontal bearing capacity of single pile under compound load action | |
| CN202735062U (en) | Pendulum type aeroelastic model | |
| Tian et al. | Experimental study on influencing factors of hydrodynamic coefficient for jack-up platform | |
| Tamagni | Unstrucured block ramps | |
| CN105547638A (en) | Thin layer water flow rolling wave measurement system based on pressure sensor and method thereof | |
| CN109870290A (en) | A kind of modification method of the rectangular super high rise structure reynolds number effect of corners | |
| CN205373998U (en) | Sheet flow roll wave measuring device based on pressure sensor | |
| CN210400987U (en) | Steel shell concrete separation detection gridding division device | |
| CN103148841B (en) | Rod-type marine environment synchronous vertical survey device | |
| Troch et al. | An overview of the WECwakes project: Physical modelling of an array of 25 wave energy converters |
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: 20141126 Termination date: 20161031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |