CN107577847A - A kind of antifouling decoction fill method of bearing based on FLUENT - Google Patents
A kind of antifouling decoction fill method of bearing based on FLUENT Download PDFInfo
- Publication number
- CN107577847A CN107577847A CN201710669821.8A CN201710669821A CN107577847A CN 107577847 A CN107577847 A CN 107577847A CN 201710669821 A CN201710669821 A CN 201710669821A CN 107577847 A CN107577847 A CN 107577847A
- Authority
- CN
- China
- Prior art keywords
- decoction
- bearing
- velocity
- flow
- flow velocity
- 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.)
- Pending
Links
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
The present invention provides a kind of antifouling decoction fill method of bearing based on FLUENT, comprises the steps：(1) threedimensional model of bearing is established, and is conducted into FLUENT, extracts bearing clearance, carries out mesh generation, and set fluid boundary condition；(2) flow velocity of setting filling decoction, decoction flow velocity analysis in bearing clearance is carried out based on FLUENT, extracts bearing clearance velocity flow profile cloud atlas；(3) according to the velocity flow profile cloud atlas, the region that decoction flow velocity is 0 is determined whether, if so, the then flow velocity of renewal filling decoction, repeat step (3), until the region that flow velocity is 0 is not present in velocity flow profile cloud atlas；(4) decoction filling is carried out to bearing using the flow velocity of currently available filling decoction.This method obtains the filling situation of decoction according to decoction in each position velocity flow profile of bearing, realizes the evaluation of anti-fouling effect, can instruct the design of actual liquid dose and flow, so as to reduce design experiment cost.
Description
Technical field
The present invention relates to a kind of antifouling decoction fill method of bearing based on FLUENT, belong to protection technical field,
Suitable for marine propulsion shafting stern bearing and other stern tube bearing equipment for needing to carry out antifouling design.
Background technology
Gap between screw shaft of ship and bearing be present, and be full of seawater.During vessel berth harbour, in bearing clearance easily
Marine growth is grown, influences the safety of stern tube shaft and bearing.To solve the problems, such as the sea marine organism pollution of bearing clearance, many ships are using electricity
The antifouling method of solution seawater conveys sodium hypochlorite anti-fouling agent into bearing clearance, so as to realize to being stained control in bearing clearance
System.But in actual design process, due to the flow velocity of antifouling decoction can not be held antifouling decoction may be caused not fill out well
Whole bearing clearance is filled, causes anti-fouling effect undesirable.
The content of the invention
In view of this, it is an object of the invention to provide a kind of antifouling decoction fill method of bearing based on FLUENT, the party
Method obtains the filling situation of decoction according to decoction in each position velocity flow profile of bearing, realizes the evaluation of anti-fouling effect, can refer to
The design of actual liquid dose and flow is led, so as to reduce design experiment cost.
Realize that technical scheme is as follows：
A kind of antifouling decoction fill method of bearing based on FLUENT, comprises the steps：
(1) threedimensional model of bearing is established, and is conducted into FLUENT, extracts bearing clearance, carries out mesh generation, and
Set fluid boundary condition；
(2) flow velocity of setting filling decoction, decoction flow velocity analysis in bearing clearance is carried out based on FLUENT, extracts bearing clearance
Velocity flow profile cloud atlas；
(3) according to the velocity flow profile cloud atlas, the region that decoction flow velocity is 0 is determined whether, if so, then renewal filling
The flow velocity of decoction, repeat step (3), until the region that flow velocity is 0 is not present in velocity flow profile cloud atlas, then it is assumed that the flow velocity is put in poison
Liquid can fill up whole bearing clearance；
(4) decoction filling is carried out to bearing using the flow velocity of currently available filling decoction.
Beneficial effect
The present invention judges whether decoction is filled up completely with using the flow velocity of fluid in bearing clearance, obtains in cloud charts not
The flow velocity of corresponding filling decoction during the region that flow velocity is 0 be present, because can be with decoction filling flow velocity lower bearing gap
Decoction is completely filled with, so as to realize to being stained control in bearing clearance.
Brief description of the drawings
Fig. 1 is the flow chart of embodiment 1；
Fig. 2 is the bearing arrangement three-dimensional model diagram of example 1；
Fig. 3 is example 1 (full symmetrical configuration, goes 1/4 structural model to carry out net during analysis in FLUENT middle (center) bearings gap grid chart
Lattice divide)；
Fig. 4 is schematic cross-section of the bearing of example 1 along Z-direction；
Fig. 5 is each section gap decoction velocity flow profile cloud atlas of the bearing of example 1 along Z-direction；
Fig. 6 is position view of the line segment of example 1 in bearing arrangement；
Fig. 7 is that flow is velocity profile on line1 in 2 ton hour Fig. 6；
Fig. 8 is that flow is velocity profile on line2 in 2 ton hour Fig. 6；
Fig. 9 is that flow is velocity profile on line3 in 2 ton hour Fig. 6；
Figure 10 is that flow is velocity profile on line2 in 4 ton hour Fig. 6；
Figure 11 is that flow is velocity profile on line3 in 4 ton hour Fig. 6.
Embodiment
Below in conjunction with drawings and examples, the invention will be further described.
As shown in figure 1, embodiment 1 is related to a kind of antifouling decoction fill method of bearing based on FLUENT, including following steps
Suddenly：
First, according to the bearing arrangement size of reality, three-dimensional modeling is carried out using 3 d modeling software ProE.
Fig. 2 show certain ship stern bearing 3 d structure model.According to its specific size, progress three-dimensional is built in ProE
Mould, including bearing shell, runner and decoction hand-hole.Because this stern bearing is full symmetrical configuration, to reduce finite element grid quantity, section
About analysis time, 1/4 model is selected to carry out finite element analysis.
2nd, the threedimensional model established is imported in FLUENT, extracts bearing clearance, carry out mesh generation.
The 1/4 stern bearing structural model established in step 1 is imported in Fluent, extracts bearing clearance, and divide net
Lattice, as shown in Figure 3.The bearing clearance of extraction is the space that decoction needs to fill, and having divided 1,200,000 grids in this example is carried out
Rate of flow of fluid is analyzed.
3rd, fluid boundary condition is set, and sets decoction to fill flow, bearing clearance decoction flow velocity is carried out based on FLUENT
Analysis.
Rate of flow of fluid analysis is carried out for the FEM model in step 2.The flow initial setting of entrance be 2 tons/it is small
When, and one outlet is set, two wall borders.Then rate of flow of fluid analysis is proceeded by.
4th, calculate after terminating, extract bearing clearance velocity flow profile cloud atlas；
Analysis in step 3, velocity flow profile cloud atlas is extracted after terminating.The position that bearing clearance section is distributed with Z axis
Situation is as shown in figure 4, Fig. 5 is each section gap decoction velocity flow profile cloud atlas of the bearing along Z-direction；Fig. 6 is each line segment in bearing knot
Position view in structure, Fig. 7 are velocity profiles on line1 in Fig. 6, and Fig. 8 is velocity profile, Fig. 9 on line2 in Fig. 6
It is velocity profile on line3 in Fig. 6.If anti-dirtying liquid injects among bearing it can be seen from Fig. 5, Fig. 7, Fig. 8 and Fig. 9,
Each gutter channel of bearing has flow velocity, it is believed that and antifouling liquid energy is full of all gutter channels, but bearing bottom flow flow area is small,
So that top line3 and bottom line2 bottoms flowing water are almost 0, it is believed that this part anti-fouling effect is bad.
5th, according to velocity flow profile cloud atlas, it can be seen that the top of bearing and the decoction flow velocity of bottom are almost 0, then need
Adjust flow.Flow is increased into 4 ton hours, the step of repeating two to five, Figure 10 and Figure 11 represent respectively flow for 4 tons/it is small
When, flow velocity corresponding to line2 and line3, as seen from the figure, the flow velocity of its top and bottom are all much larger than 0, then it is assumed that should
Decoction can fill up whole bearing clearance under flow velocity.
Six, provide flow design value.
According to velocity flow profile cloud atlas, when flow reaches 4 ton hour, there is no the area that decoction flow velocity is 0 in bearing clearance
Domain, analysis terminate.It can now determine that the antifouling medicinal liquid flow demand of this stern bearing is 4 ton hours.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (2)
1. the antifouling decoction fill method of a kind of bearing based on FLUENT, it is characterised in that comprise the steps：
(1) threedimensional model of bearing is established, and is conducted into FLUENT, extracts bearing clearance, carries out mesh generation, and set
Fluid boundary condition；
(2) flow velocity of setting filling decoction, decoction flow velocity analysis in bearing clearance is carried out based on FLUENT, extracts bearing clearance flow velocity
Cloud charts；
(3) according to the velocity flow profile cloud atlas, the region that decoction flow velocity is 0 is determined whether, if so, then renewal filling decoction
Flow velocity, repeat step (3), until velocity flow profile cloud atlas in be not present flow velocity be 0 region, then it is assumed that decoction can under the flow velocity
To fill up whole bearing clearance；
(4) decoction filling is carried out to bearing using the flow velocity of currently available filling decoction.
2. the antifouling decoction fill method of bearing according to claim 1 based on FLUENT, it is characterised in that the step
(1) it is 1/4 scale model that threedimensional model is established in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669821.8A CN107577847A (en) | 2017-08-08 | 2017-08-08 | A kind of antifouling decoction fill method of bearing based on FLUENT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669821.8A CN107577847A (en) | 2017-08-08 | 2017-08-08 | A kind of antifouling decoction fill method of bearing based on FLUENT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107577847A true CN107577847A (en) | 2018-01-12 |
Family
ID=61035642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710669821.8A Pending CN107577847A (en) | 2017-08-08 | 2017-08-08 | A kind of antifouling decoction fill method of bearing based on FLUENT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107577847A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114671003A (en) * | 2022-02-18 | 2022-06-28 | 中国船舶重工集团公司第七一九研究所 | Antifouling device of water lubrication bearing and ship |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015069260A1 (en) * | 2013-11-07 | 2015-05-14 | Schlumberger Canada Limited | Characterization of fluids with drag reducing additives in a couette device |
| CN106055835A (en) * | 2016-06-27 | 2016-10-26 | 中南大学 | Fluent software-based method for optimizing bottom blowing furnace structure |
| CN106682348A (en) * | 2017-01-09 | 2017-05-17 | 福州大学 | Method for calculating sieve plate extraction tower liquid flow field by using low Reynolds number turbulence model |
-
2017
- 2017-08-08 CN CN201710669821.8A patent/CN107577847A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015069260A1 (en) * | 2013-11-07 | 2015-05-14 | Schlumberger Canada Limited | Characterization of fluids with drag reducing additives in a couette device |
| CN106055835A (en) * | 2016-06-27 | 2016-10-26 | 中南大学 | Fluent software-based method for optimizing bottom blowing furnace structure |
| CN106682348A (en) * | 2017-01-09 | 2017-05-17 | 福州大学 | Method for calculating sieve plate extraction tower liquid flow field by using low Reynolds number turbulence model |
Non-Patent Citations (1)
| Title |
|---|
| 侯明凯等: "基于Fluent的柴油机进气歧管流动模拟", 《机械工程与自动化》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114671003A (en) * | 2022-02-18 | 2022-06-28 | 中国船舶重工集团公司第七一九研究所 | Antifouling device of water lubrication bearing and ship |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Talley et al. | Characterization of horizontal air–water two-phase flow in a round pipe part I: Flow visualization | |
| Álvarez-Solas et al. | Heinrich event 1: an example of dynamical ice-sheet reaction to oceanic changes | |
| Chen et al. | Fully coupled analysis of an integrated floating wind-wave power generation platform in operational sea-states | |
| Chen | The Kuroshio power plant | |
| CN105438399A (en) | Physical model of mooring ship and test method of physical model | |
| CN204401551U (en) | A kind of deep-water basin entirety makes flow structure | |
| CN201926653U (en) | Simulated water bloom breakout experimental device | |
| CN104762917A (en) | Integral flow making method for deep water basin | |
| CN107577847A (en) | A kind of antifouling decoction fill method of bearing based on FLUENT | |
| CN108733922B (en) | Cavitation calculation method under nacelle propeller deflection working condition | |
| Yin et al. | Numerical investigation of submerged flexible vegetation dynamics and wave attenuation under combined waves and following currents | |
| CN207891841U (en) | A kind of flexible stop water reducing flow leakage rate at the side wall of water blocking curtain wall lower end | |
| CN107114297B (en) | Experimental device and method for simulating influence of water flow shearing of water turbine runner on fish body passing through machine | |
| Markull et al. | The influence of the Maputo and Incomati rivers on the mixing and outflow of freshwater from Maputo Bay (Mozambique) | |
| CN113779698A (en) | Simplified design method of ship mooring system under water flow action | |
| Castillo et al. | Simulation of the flushing into the dam-reservoir Paute-Cardenillo | |
| Palemón-Arcos et al. | Modeling wave-structure interaction and its implications in offshore structure stability | |
| Abass et al. | Analysis of Seepage through Embankment Dams as Case Study (Al-Shahabi Dam) in Iraq | |
| CN107591078A (en) | Deepwater drilling produces vertical oil storage platform dynamic oil water displacement test apparatus and method | |
| CN206791418U (en) | A kind of experimental provision simulated the shearing of Turbine Flow Passage current and influenceed on crossing machine fish body | |
| CN108104076A (en) | A kind of flexible stop water for reducing current leakage rate at the side wall of water blocking curtain wall lower end | |
| Ichinose et al. | 2015A-GS16-3 A Detailed Numerical Study on Influence of After-Body Frame-Lines on Near-Wall and Near-Wake Flow Fields | |
| ZHANG et al. | Research on method of evaluating anti-wave ability of deepwater long-line rope aquaculture facility | |
| Lin et al. | Actuator line method flow structures and morphology interaction around a monopile-supported tidal stream turbine using the actuator line–Sediment transport coupling simulation | |
| Kristiansen | Vessel operations in relation to new types of offshore aquaculture facilities, and weather windows in exposed areas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180112 |
|
| RJ01 | Rejection of invention patent application after publication |