CN102297110A - Method for analyzing efficiency of centrifugal pump - Google Patents
Method for analyzing efficiency of centrifugal pump Download PDFInfo
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- CN102297110A CN102297110A CN2011102268586A CN201110226858A CN102297110A CN 102297110 A CN102297110 A CN 102297110A CN 2011102268586 A CN2011102268586 A CN 2011102268586A CN 201110226858 A CN201110226858 A CN 201110226858A CN 102297110 A CN102297110 A CN 102297110A
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Abstract
The invention relates to a method for analyzing the efficiency of a centrifugal pump. The method comprises the following steps of: 1, entering solidworks flow simulation software and setting parameters appointed by the software according to an actual application background before starting to compute; 2, checking whether a model is closed, and if not, modifying the model; 3, entering a flow simulation analysis tree and executing the following operation: 1) selecting a rotary region, 2) setting a boundary condition, 3) setting a target, and 4) starting to analyze, so that a computer can automatically compute a value of the set target; and 4, analyzing the efficiency of the centrifugal pump, wherein a formula for computing the efficiency is as follows: a pressure difference is a difference between outlet static pressure and inlet pressure; the inlet pressure and a torque are results computed by the computer in the former step; and the outlet static pressure, flow and an angular speed are the parameters set in the boundary condition. The brand new method for analyzing the efficiency of the centrifugal pump is provided and is simple and easy; and therefore, an engineering worker can master the method easily.
Description
Technical field
The present invention relates to a kind of centrifugal pump efficiency analysis method, particularly a kind of centrifugal pump efficiency analysis method based on solidworks flow simulation software belongs to the Fluid Machine and Fluid Dynamics Engineering field.
Background technique
Present stage, the employed software of analytical calculation centrifugal pump efficient mainly is relatively " computational fluid mechanics (CFD) " analysis software of specialty such as FLUENT, Phoenics, CFX both at home and abroad.These software research orienteds scholar design needs the relatively course learning of specialty, and it is higher to grasp threshold.
Solidworks flow simulation software is a CAE module of solidworks software, is a fluid mechanics assistant analysis module that designs by " engineering fluid mechanics (EFD) " principle.EFD software and CFD software towards user object different, EFD software designs for the engineering staff, EFD has passed on the global advantage of CAD, allows the user to analyze at once after modeling, does not need to change any data and does analysis again.The user is as long as simply tell software, and what its evaluating objects is, software just can be provided with suitable analytical parameters, and generates a suitable analysis grid automatically, and boundary conditions then is set, and begins to analyze.Solidworks flow simulation has got rid of the supposition in the process, only requires minimum information for the statement target, guides the user to analyze step by step then, obtains reliable engineering answer.Therefore, solidworks flow simulation is particularly suitable for not having the engineer of fluid emulation specialty background.
Solidworks flow simulation is because its ease for use is used very extensive.If can use solidworks flow simulation software to carry out the analysis of centrifugal pump efficient, will reduce the difficulty that centrifugal pump is analyzed greatly.But yet there are no the example that uses solidworks flow simulation analysis centrifugal pump efficiency at present at home and abroad.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, propose a kind of centrifugal pump efficiency analysis method based on soli dworks flow simulation software.
The invention provides a kind of centrifugal pump efficiency analysis method, may further comprise the steps:
One, enter solidworks flow simulation software, following parameter be set according to actual application background:
1) designated analysis special topic title;
2) designated analysis and the used unit of its result;
3) the designated analysis type is an interior flow field; Rotation type is local rotation; And appointment running shaft;
4) select fluid;
5) specify the wall condition;
6) specify the initial fluid parameter;
7) designated result precision;
Two, check whether model seals; If sealing need not made amendment to model;
Three, enter among the parsing tree flow simulation analysis tree, and carry out following operation:
1) select rotary area in the rotating regions option of rotation territory, this rotary area is the threedimensional model of the whole impeller of parcel, and specifies angular velocity of rotation;
2) following parameter is set in boundary conditions boundary conditions: inlet flow rate, outlet static pressure, select impeller all with contacted of fluid and be provided with these faces angular velocity, select the pump housing all internal surfaces that contact with fluid and be set to stationary wall except that import and export;
3) inlet pressure, impeller rotating shaft direction moment of torsion, import and export flow are set in target goals, and these targets all are made as the convergence target;
4) begin to analyze operation, computer can calculate the numerical value of set target automatically, and after judging convergence, calculating stops;
Four, analysis centrifugal pump efficiency: the formula of computational efficiency is:
Pressure difference wherein is poor for outlet static pressure and inlet pressure, and inlet pressure and moment of torsion are the result that the rapid middle COMPUTER CALCULATION of previous step draws, and outlet static pressure, flow and angular velocity are the parameter that is provided with in the boundary conditions.
Beneficial effect:
The threshold of grasping solidworks flow simulation analysis software is lower, does not need to be grasped a large amount of fluid machinery knowwhies, and common engineering personnel only need training a little to grasp.Setting during solidworks flow simulation analyzes is also comparatively simple, and most parameter is finished automatically by software, only needs several steps to be provided with, and can begin to analyze.Solidworks flow simulation software is a kind of brand-new software, and using it to do analysis also is a kind of brand-new point-score, grasps various analysis, can use for reference mutually, improves the accuracy of theory analysis efficient.
Embodiment
Specify preferred implementation of the present invention below.
The present embodiment specific implementation a kind of centrifugal pump efficiency analysis method of the present invention, may further comprise the steps:
Prepare a centrifugal pump analytical model, comprise the pump housing and impeller, the pump housing is imported and exported and place, pump shaft hole is closed by revising model interpolation wall, makes the pump housing form a cavity body.Impeller is fully in pump housing cavity.
1. in " flow simulation " menu, click " wizard " button.
2. in the menu " project configuration " that ejects, name this called after " 2011.06.30 ", point " next " for analyzing.
In the menu " unit system " that ejects selection pressure, speed, length, temperature, time isoparametric unit.Point " next ".
4. in the menu " analysis type " that ejects, select " rotation " choosing " local region (s) " again, the running shaft of selection impeller in reference axis.This running shaft of analyzing impeller is the Z axle.Point " next ".
5. in the menu " default fluid " that ejects, select flowing medium, this is analyzed and select " water " in " liquids ".Point " next ".
6. in the menu " wall conditions " that ejects, select wall roughness.This does not set concrete wall roughness in analyzing.Point " next ".
7. in the menu " initial conditions " that ejects the environment initial conditions is set, this is analyzed and selects implied terms.Point " next ".
8. in the menu " results and geometry resolution " that ejects, set number of grid.Required precision is high more, and grid is many more.
9. after above condition setting is finished, enter in " flow simulation analysis tree ", in " rotating regions ", set the angular velocity of rotary area, this analysis is to use in model to add a part and set vane angle speed, this part just in time wraps impeller fully, this part rotates the territory exactly, replaces setting the angular velocity of impeller by the angular velocity of specifying this part, acts on constant.In " boundary conditions ", set inlet flow rate, outlet static pressure and stationary wall.The stationary wall of this analysis is all walls except importing and exporting wall in the pump housing inner chamber wall.In " goals ", set inlet pressure, select impeller to set and select axial moment of torsion, set and import and export flow.These targets are the convergence target under the implied terms.
10, in the Toolbars menu, click " check geometry " button, check whether model seals, if unsealing needs to revise model.
11. judging to calculate automatically, choosing " run " button in the Toolbars menu, beginning computing, computer meeting finish.The result can check in the menu that ejects.
12. record data are according to formula result of calculation.
For content of the present invention and implementation methods are described, provided a specific embodiment.The purpose of introducing details in an embodiment is not the scope of restriction claims, but helps to understand the method for the invention.One skilled in the art should appreciate that: in the spirit and scope that do not break away from the present invention and claims thereof, to the various modifications of most preferred embodiment step, variation or to replace all be possible.Therefore, the present invention should not be limited to the disclosed content of most preferred embodiment.
Claims (1)
1. centrifugal pump efficiency analysis method may further comprise the steps:
One, enter solidworks flow simulation software, following parameter be set according to actual application background:
1) designated analysis special topic title;
2) designated analysis and the used unit of its result;
3) the designated analysis type is an interior flow field; Rotation type is local rotation; And appointment running shaft;
4) select fluid;
5) specify the wall condition;
6) specify the initial fluid parameter;
7) designated result precision;
Two, check whether model seals; If sealing need not made amendment to model;
Three, enter among the parsing tree flow simulation analysis tree, and carry out following operation:
1) select rotary area in the rotating regions option of rotation territory, this rotary area is the threedimensional model of the whole impeller of parcel, and specifies angular velocity of rotation;
2) following parameter is set in boundary conditions boundary conditions: inlet flow rate, outlet static pressure, select impeller all with contacted of fluid and be provided with these faces angular velocity, select the pump housing all internal surfaces that contact with fluid and be set to stationary wall except that import and export;
3) inlet pressure, impeller rotating shaft direction moment of torsion, import and export flow are set in target goals, and these targets all are made as the convergence target;
4) begin to analyze operation, computer can calculate the numerical value of set target automatically, and after judging convergence, calculating stops;
Four, analysis centrifugal pump efficiency: the formula of computational efficiency is:
Pressure difference wherein is poor for outlet static pressure and inlet pressure, and inlet pressure and moment of torsion are the result that the rapid middle COMPUTER CALCULATION of previous step draws, and outlet static pressure, flow and angular velocity are the parameter that is provided with in the boundary conditions.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102268586A CN102297110A (en) | 2011-08-09 | 2011-08-09 | Method for analyzing efficiency of centrifugal pump |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102268586A CN102297110A (en) | 2011-08-09 | 2011-08-09 | Method for analyzing efficiency of centrifugal pump |
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| CN102297110A true CN102297110A (en) | 2011-12-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343742A (en) * | 2013-07-05 | 2013-10-09 | 合肥工业大学 | Testing system and testing method for characteristics of plunger pump |
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2011
- 2011-08-09 CN CN2011102268586A patent/CN102297110A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343742A (en) * | 2013-07-05 | 2013-10-09 | 合肥工业大学 | Testing system and testing method for characteristics of plunger pump |
| CN103343742B (en) * | 2013-07-05 | 2015-05-27 | 合肥工业大学 | Testing system and testing method for characteristics of plunger pump |
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Application publication date: 20111228 |