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A multi-stage centrifugal pump impeller intelligent optimization method based on improved particle swarm optimization algorithm

A technology of centrifugal pump impeller and particle swarm improvement, applied in design optimization/simulation, calculation, special data processing applications, etc., to achieve a wide range of applications, reduced iteration steps, and good calculation accuracy.

Active Publication Date: 2019-01-04
JIANGSU UNIV
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  • Claims
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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a multi-objective optimization design method combining improved particle swarm optimization (Particle Swarm Optimization, PSO) and CFD based on artificial neural network (ANN), In order to meet the demand for stable and efficient pump operation at the same time

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  • A multi-stage centrifugal pump impeller intelligent optimization method based on improved particle swarm optimization algorithm
  • A multi-stage centrifugal pump impeller intelligent optimization method based on improved particle swarm optimization algorithm
  • A multi-stage centrifugal pump impeller intelligent optimization method based on improved particle swarm optimization algorithm

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specific Embodiment

[0048] Concrete embodiment: the calculation process of this embodiment is as figure 1 As shown, taking a multi-stage centrifugal pump with an impeller specific speed of 132 as an example, its axial projection diagram is as follows figure 2 shown. First use the compiled software to enter the PSO algorithm parameters:

[0049] Optimization goal: the highest efficiency in the computing domain;

[0050] Optimization variables: import and export placement angles such as Figure 4 As shown, the inlet and outlet width, blade thickness as image 3 As shown, the number of leaves

[0051] Parameter boundary: The typical value of each independent variable is ±20% as the calculation boundary.

[0052] Population size: 20

[0053] Maximum number of iterations: 100

[0054] Accuracy: 10 -4

[0055] After the parameters are determined, the particle information is initialized using the Latin hypercube sampling method.

[0056] Import the current chromosome information into CFTurbo ...

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Abstract

The invention relates to a multi-stage centrifugal pump impeller intelligent optimization method based on an improved particle swarm optimization algorithm. The method comprises steps: setting algorithm parameters; initializing the particles in the computational domain; the impeller water model corresponding to each particle being established; drawing an impeller mesh; the external characteristicparameters of the computational results being read to obtain the fitness of the particles to the computational domain; if the number of iterative steps is more than 10% of the total number of steps, the ANN model of the convergence residual with respect to the update coefficient of particle velocity being trained, and the particle velocity being updated using the ANN model; when the iteration number is less than or equal to 10% of the total number of steps, the learning factor being generated randomly and the particle velocity being updated; judging whether the best particle reaches the iteration stopping condition, if not, updating the particle position and returning to continue the iteration; if so, the iteration being stopped and the optimization result being output. The invention realizes the efficiency optimization of the pump by means of a computer, so that the pump can meet the demand of the contemporary society for energy saving and emission reduction of such equipment.

Description

technical field [0001] The invention belongs to the field of pump optimization design, in particular to a multi-stage centrifugal pump impeller with medium and low specific speed and an optimization method thereof. Background technique [0002] Pumps are important general-purpose machinery used in a wide variety of industries. Among them, the medium and low specific speed pumps have the characteristics of small flow and large head, and are mainly used in places with high pressure requirements such as high-rise water supply and fire protection. According to relevant data, the electric energy consumed on the water pump unit accounts for more than 21% of the total energy consumption in the country every year, and accounts for 30%-60% of the production cost in water supply enterprises. Therefore, optimizing the efficiency of centrifugal pumps is of great significance for energy saving and emission reduction. [0003] In the field of fluid machinery, relevant theories have prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23G06F30/17
Inventor 甘星城王文杰袁寿其裴吉唐亚静曹健邓起凡蒋伟
Owner JIANGSU UNIV
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