FLUENT-based bearing antifouling chemical liquid filling method
A filling method and liquid medicine technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem that the antifouling liquid flow rate cannot be grasped, the antifouling liquid cannot fill the bearing gap well, and the antifouling Unsatisfactory effect and other problems, to achieve the effect of fouling control
Inactive Publication Date: 2018-01-12
NO 719 RES INST CHINA SHIPBUILDING IND
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Problems solved by technology
However, in the actual design process, due to the inability to grasp the flow rate of the antifouling liquid, the antifouling liquid may not be able to fill the entire bearing gap well, resulting in an unsatisfactory antifouling effect
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[0023] The present invention will be further described below in conjunction with drawings and embodiments.
[0024] like figure 1 As shown, embodiment 1 relates to a kind of bearing antifouling chemical solution filling method based on FLUENT, comprising the following steps:
[0025] 1. According to the actual bearing structure size, use the 3D modeling software ProE for 3D modeling.
[0026] figure 2 Shown is a three-dimensional structure model of a ship stern bearing. According to its specific size, three-dimensional modeling is carried out in ProE, including bearing bush, flow channel and liquid injection hole. Since the stern bearing is a fully symmetrical structure, in order to reduce the number of finite element meshes and save analysis time, the 1 / 4 model is selected for finite element analysis.
[0027] 2. Import the established 3D model into FLUENT, extract the bearing clearance, and perform mesh division.
[0028] Import the 1 / 4 stern bearing structure model es...
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The invention provides a FLUENT-based bearing antifouling chemical liquid filling method. The method comprises the following steps of (1) building a three-dimensional model of a bearing, importing themodel into FLUENT, extracting a bearing gap, performing grid division, and setting a fluid boundary condition; (2) setting a flow velocity of a filling chemical liquid, performing analysis on the flow velocity of the chemical liquid of the bearing gap based on the FLUENT, and extracting a flow velocity distribution cloud chart of the bearing gap; (3) according to the flow velocity distribution cloud chart, judging whether a region in which the flow velocity of the chemical liquid is 0 exists or not, and if yes, updating the flow velocity of the filling chemical liquid, and repeating the step(3), until the region which the flow velocity is 0 does not exist in the flow velocity distribution cloud chart; and (4) performing chemical liquid filling on the bearing by utilizing the currently obtained flow velocity of the filling chemical liquid. According to the method, a filling condition of the chemical liquid is obtained according to flow velocity distribution of the chemical liquid at each part of the bearing; evaluation of an antifouling effect is realized; and design of actual chemical liquid dosage and flow can be guided, so that the design test cost is reduced.
Description
technical field [0001] The invention relates to a FLUENT-based method for filling an antifouling drug solution for bearings, belongs to the technical field of bearing protection, and is applicable to stern bearings of ship propulsion shafting and other stern tube bearing equipment requiring antifouling design. Background technique [0002] There is a gap between the ship's stern shaft and the bearing, which is filled with seawater. When the ship is moored at the wharf, sea organisms are easy to grow in the bearing gap, which affects the safety of the stern shaft and bearings. In order to solve the problem of marine biofouling in the bearing gap, many ships use electrolytic seawater antifouling method to deliver sodium hypochlorite antifouling agent into the bearing gap, so as to realize the pollution control in the bearing gap. However, in the actual design process, due to the inability to grasp the flow rate of the antifouling liquid, the antifouling liquid may not be able...
Claims
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Inventor 何涛王隽疏舒杨俊张金国
Owner NO 719 RES INST CHINA SHIPBUILDING IND