CN109344535A - A kind of Diffusion Vanes of Axial Pumps body automatic optimizing design method based on self-adaption flow-field - Google Patents
A kind of Diffusion Vanes of Axial Pumps body automatic optimizing design method based on self-adaption flow-field Download PDFInfo
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Abstract
A kind of Diffusion Vanes of Axial Pumps body automatic optimizing design method based on self-adaption flow-field, belong to hydraulic engineering and power engineering technology field, pass through the determination at vane inlet angle, diffuser automatic optimizing design method and diffuser automatic optimizing design method based on adaptive inlet angle, compared with traditional diffuser design, the invention patent obtains the Flow Field Distribution of diffuser admission section on the basis of CFX calculated result, according to each section wing entrance angle of the adaptive adjustment diffuser of Flow Field Distribution, make water flow is smoothly shock-free to enter in diffuser, avoid the impact loss of diffuser import.The effect and effect of diffuser are fully considered in process of optimization simultaneously, refine diffuser comprehensive design index, so that the diffuser that optimization design comes out reduces hydraulic loss and to the greatest extent recycling velocity circulation to the greatest extent, the overall operation efficiency for improving water pump assembly, reduces operation energy consumption.
Description
Technical field
The invention belongs to hydraulic engineerings and power engineering technology field, are related to a kind of optimum design method for pumping diffuser,
Particularly relate to a kind of Diffusion Vanes of Axial Pumps body automatic optimizing design method based on self-adaption flow-field.
Background technique
For the angle of energy, impeller is mostly important component, but for large-scale pump installation, each flow passage components pair
The performance of complete machine especially energy characteristics equally has important influence.In addition, each flow passage components are not mutually indepedent, phase
It mutually influences, only as an entirety, can just obtain the performance of maximized complete machine.In Large Scale Axial-flow Pump Unit,
The water flow of impeller outlet is introduced into the import of outlet passage by guide vane according to certain rate request, plays the role of forming a connecting link.
For the effect of guide vane, impeller provides energy by rotating to be water flow, so that it is obtained certain lift, in impeller outlet water flow
With biggish peripheral speed and velocity circulation, kinetic energy corresponding to peripheral speed of the guide vane by impeller outlet is converted to pressure energy,
To reach recycling circular rector, reduces outlet passage hydraulic loss, improve the purpose of unit efficiency.For guide vane design angle,
Vane inlet should accept the incoming flow of impeller outlet, and impeller outlet water flow is enabled more to smoothly enter guide vane, guide vane middle section
Then need to achieve the purpose that with back segment to adjust water (flow) direction so that water flow with no velocity circulation or lesser velocity circulation state into
Enter in outlet passage.Have more bibliography and shows that diffuser has critically important influence to pump performance.The design of guide vane
And optimization is always the emphasis of current research.How the secondary preferable axial pump vane of optimization design one, can be maximized
The hydraulic loss for recycling reduction guide vane itself as far as possible while circular rector improves unit efficiency is main research contents.
Summary of the invention
The purpose of the invention is to the separation of flow in unreasonable, guide vane for inlet angle design in traditional guide vane design process,
Vortex phenomenon is serious, Diffusion Vanes of Axial Pumps body recycling speed is insufficient and Diffusion Vanes of Axial Pumps body can not Automatic Optimal etc. no
Foot, proposes a kind of Diffusion Vanes of Axial Pumps body automatic optimizing design method based on self-adaption flow-field, can solve the above-mentioned prior art
Deficiency, can make diffuser reduce to the greatest extent hydraulic loss and to the greatest extent recycling velocity circulation, improve water pump assembly
Overall operation efficiency, reduce operation energy consumption.
The technical scheme is that a kind of Diffusion Vanes of Axial Pumps body Automatic Optimal Design side based on self-adaption flow-field
Method, which comprises the steps of:
(1) the determination method at vane inlet angle:
The design of rear guide vane body inlet angle is carried out by following equation:
α3=α '3+Δα(1)
In formula, α3For vane inlet angle；Δ α is the vane inlet angle of attack, takes 0 °~5 °；α3' it is vane inlet fluid flow angle；
The diffuser inlet angle of self-adaption flow-field determines that steps are as follows:
Diffuser is divided into 10 aerofoil profile sections before diffuser design by (1-1) from wheel hub to wheel rim, and analysis is each
Aerofoil profile section diffuser inlet velocity triangle；
(1-2) calculates Interior Flow Field in Axial Pump Impeller VELOCITY DISTRIBUTION by CFX fluid calculation software, obtains axial-flow pump impeller
Export axis plane velocity (Vm2) and impeller outlet speed circumferential components (Vu2)；
Therefore (1-3) impeller outlet section and vane inlet section free of losses transition can obtain Vm3=Vm2, Vu3=Vu2；
(1-4) considers the excretion coefficient of guide vane blade according to the diffuser inlet flow field velocity conditions being calculated, and calculates
The inlet angle that diffuser adapts to flow field is obtained, calculation formula is as follows:
In formula, νm3For the axis plane velocity of vane inlet；νu3For the circumferential components of vane inlet speed；ψ3For guide vane blade into
Mouth excretion coefficient；Su3For the thickness of vane inlet circumferencial direction；T is pitch；S3For the thickness of vane inlet stream interface, it is equal to guide vane
Blade actual (real) thickness；Z is the guide vane number of blade；
(1-5) repeats step (1-2)~(1-4) and calculates separately to obtain the guide vane leaf for amounting to 10 sections from wheel hub to wheel rim
Piece inlet angle, so that axial-flow pump impeller each section water flow from wheel hub to wheel rim can smoothly enter guide vane along the direction of guide vane blade
Body reduces diffuser import impact loss, improves the working efficiency of guide vane blade；
(2) based on the diffuser automatic optimizing design method of adaptive inlet angle:
After determining the adaptive flow field entrance angle of diffuser, also need to determine diffuser according to the effect and status of diffuser
Other key design parameters establish the Automatic Optimal Design platform of guide vane；
The determination method of shown key design parameter is as follows:
(2-1) determines each section wing cascade solidity value of diffuser:
According to the diffuser inlet angle determined in formula (1), each section wing leaf grating of diffuser is acquired according to following formula
Consistency:
In formula, diffusion angle of the ε between adjacent guide vane；
(2-2) determines the diffuser number of blade:
In view of the structural parameters of whole water pump assembly, to avoid play staff from resonating, the diffuser number of blade and water pump blade number
Answer prime number each other；
(2-3) determines the diffuser angle of outlet:
In order to enable impeller outlet water flow recycles the velocity circulation of water flow as far as possible after diffuser, convert kinetic energy into
Pressure energy considers that diffuser water flowing out stream angle goes out with guide vane blade it is expected that water flow exports to go out to flow from the horizontal by 90 ° in diffuser
Bicker is there are deviation, and about 5~9 ° of angle of lag, therefore the guide vane angle of outlet may be selected 85~95 °, each section wing angle of outlet can use phase
It is equivalent；
(2-4) is calculated blade by following formula and places according to the adaptive inlet angle of diffuser and the guide vane angle of outlet
Angle；
(3) diffuser automatic optimizing design method:
In piano optimizing Design Software platform intergration CFX numerical value software for calculation, for diffuser section cascade solidity
Value, the guide vane angle of outlet and guide vane laying angle carry out the Automatic Optimal Design of guide vane, and specific step is as follows for Automatic Optimal Design:
(3-1) determines the optimization design target of guide vane:
On the one hand the optimization design of diffuser needs to pay close attention to the hydraulic loss of diffuser itself, it is also necessary to pay close attention to returning for guide vane
The effect of impeller outlet water velocity circular rector is received, optimization aim quantitatively can be classified as 3, i.e. the hydraulic loss h of diffuserg, it is dynamic
It can recovery coefficient ζ and diffuser Outlet Section Static Shift coefficient pc；
The hydraulic loss h of diffuserg: the target component of evaluation diffuser itself design superiority and inferiority, in guide vane design process
It first has to consider so that diffuser itself loss reduction, to reach the higher purpose of unit whole efficiency；
Kinetic energy recovery coefficient ζ: the energy of impeller outlet water velocity circular rector is recycled according to the evaluation of effect conductor body of diffuser
Power, diffuser recycling velocity circulation is bigger, illustrates that guide vane physical efficiency converts pressure for the kinetic energy of water flow as far as possible, improves guide vane
Body transformation efficiency；
Diffuser Outlet Section Static Shift coefficient pc: evaluation water flow rectification state after diffuser, section distortion system
Number is smaller, illustrates that outlet stream is more uniform, and water flow is smaller in the hydraulic loss of diffuser second half section, can further improve device entirety
Efficiency；
Calculation formula is as follows:
In formula, E3、E4The respectively gross energy of guide vane import and export section；ν3、ν4The respectively speed of guide vane import and export section
Degree,For guide vane Outlet Section maximum stagnation pressure value；For guide vane Outlet Section minimum stagnation pressure value；For guide vane Outlet Section
Average total pressure；
(3-2) builds diffuser Automatic Optimal Design platform in piano optimization software, calls cfx software by piano
Numerical simulation calculation is carried out, Calling MATLAB software carries out result post-processing；
(3-3) is handled objective function using normalization method, converts single goal for multi-objective problem by weighted value
Problem, three target component weighted values of this patent take 1/3；
(3-4) gives initial design parameters value, numerical simulation calculation is carried out to diffuser, according to calculated result and algorithm
It is required that modification design parameter value, until objective function is restrained.
The invention has the benefit that a kind of Diffusion Vanes of Axial Pumps body based on self-adaption flow-field provided by the invention is automatic
Optimum design method, design method science, impeller provide energy by rotating to be water flow, so that it is obtained certain lift, in leaf
Taking turns outlet stream has biggish peripheral speed and velocity circulation, and kinetic energy corresponding to peripheral speed of the guide vane by impeller outlet turns
It is changed to pressure energy, to reach recycling circular rector, reduces outlet passage hydraulic loss, improves unit efficiency；Vane inlet should be accepted
The incoming flow of impeller outlet, enables impeller outlet water flow more to smoothly enter guide vane, and guide vane middle section and back segment then need to reach
To the purpose of adjustment water (flow) direction, so that water flow is entered in outlet passage with no velocity circulation or lesser velocity circulation state.
The axial pump vane body of optimization design can maximumlly recycle circular rector, reduce guide vane as far as possible while improving unit efficiency
The hydraulic loss of itself.Compared with traditional diffuser design, the invention patent obtains guide vane on the basis of CFX calculated result
The Flow Field Distribution of body admission section makes water flow according to each section wing entrance angle of the adaptive adjustment diffuser of Flow Field Distribution
It is smoothly shock-free to enter in diffuser, avoid the impact loss of diffuser import.In process of optimization sufficiently simultaneously
Consider the effect and effect of diffuser, refine diffuser comprehensive design index, so that the diffuser maximum journey that optimization design comes out
The reduction hydraulic loss of degree and to the greatest extent recycling velocity circulation, improve the overall operation efficiency of water pump assembly, reduce
Operation energy consumption.
Detailed description of the invention
Fig. 1 is diffuser inlet velocity triangle in the present invention.
Fig. 2 is diffuser aerofoil profile plane outspread drawing in the present invention.
Fig. 3 is diffuser Automatic Optimal flow chart in the present invention.
Fig. 4 is that the present invention is based on the diffuser automatic optimization method flow charts of self-adaption flow-field.
Fig. 5 is guide vane blade angle coordinate diagram in the present invention.
Fig. 6 is guide vane angle of outlet coordinate diagram in the present invention.
Fig. 7 is vane inlet angular coordinate figure in the present invention.
Fig. 8 is guide vane cascade solidity coordinate diagram in the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
(1) based on the determination method at the vane inlet angle of self-adaption flow-field
The design of traditional axial flow pump rear guide vane body inlet angle is carried out by following equation:
α3=α '3+Δα (1)
In formula, α3For vane inlet angle；Δ α is the vane inlet angle of attack, generally takes 0 °~5 °；α'3For vane inlet liquid stream
Angle.
Traditional rear guide vane body, which is designed, to be added by import fluid flow angle with inlet incidence angle.This method can not due to the angle of attack
It determines, import fluid flow angle calculated by theoretical formula, and accuracy is not high, and diffuser inlet angle is dependent on manually by rule of thumb
Mode obtains.This method can be carried out for any operating condition of hydraulic model of axial-flow pump, and traditional diffuser is designed according to public affairs
Formula calculating can only be for the design conditions of impeller.Diffuser inlet velocity triangle is as shown in Figure 1.
The diffuser inlet angle of self-adaption flow-field determines step:
Diffuser is divided into 10 aerofoil profile sections before diffuser design by (1-1) from wheel hub to wheel rim, and analysis is each
Aerofoil profile section diffuser inlet velocity triangle.
(1-2) calculates Interior Flow Field in Axial Pump Impeller VELOCITY DISTRIBUTION by CFX fluid calculation software, obtains axial-flow pump impeller
Export axis plane velocity (Vm2) and impeller outlet speed circumferential components (Vu2)；
Therefore (1-3) impeller outlet section and vane inlet section free of losses transition can obtain Vm3=Vm2, Vu3=Vu2；
(1-4) considers the excretion coefficient of guide vane blade according to the diffuser inlet flow field velocity conditions being calculated, and calculates
Obtain the inlet angle that diffuser adapts to flow field.Calculation formula is as follows:
In formula, νm3For the axis plane velocity of vane inlet；νu3For the circumferential components of vane inlet speed；ψ3For guide vane blade into
Mouth excretion coefficient；Su3For the thickness of vane inlet circumferencial direction；T is pitch；S3For the thickness of vane inlet stream interface, it is equal to guide vane
Blade actual (real) thickness；Z is the guide vane number of blade.
(1-5) repeats step (1-2)~(1-4) and calculates separately to obtain the guide vane leaf for amounting to 10 sections from wheel hub to wheel rim
Piece inlet angle, so that axial-flow pump impeller each section water flow from wheel hub to wheel rim can smoothly enter guide vane along the direction of guide vane blade
Body reduces diffuser import impact loss, improves the working efficiency of guide vane blade.
(2) based on the diffuser automatic optimizing design method of adaptive inlet angle
After determining the adaptive flow field entrance angle of diffuser, also need to determine diffuser according to the effect and status of diffuser
Other key design parameters establish the Automatic Optimal Design platform of guide vane.Diffuser section wing expanded view is as shown in Figure 2.
L is aerofoil profile chord length in Fig. 2, and t is pitch, and H is guide vane aerofoil profile height, α4For the guide vane angle of outlet
The determination of key parameter:
(2-1) determines each section wing cascade solidity value of diffuser:
According to the diffuser inlet angle determined in formula (1), each section wing leaf grating of diffuser is acquired according to following formula
Consistency:
In formula, diffusion angle of the ε between adjacent guide vane.
(2-2) determines the diffuser number of blade:
In view of the structural parameters of whole water pump assembly, to avoid play staff from resonating, the diffuser number of blade and water pump blade number
Answer prime number each other.
(2-3) determines the diffuser angle of outlet:
In order to enable impeller outlet water flow recycles the velocity circulation of water flow as far as possible after diffuser, convert kinetic energy into
Pressure energy, it is expected that water flow exports to go out to flow from the horizontal by 90 ° in diffuser.Consider that diffuser water flowing out stream angle goes out with guide vane blade
Bicker is there are deviation, and about 5~9 ° of angle of lag, therefore the guide vane angle of outlet may be selected 85~95 °.Each section wing angle of outlet can use phase
It is equivalent.
(2-4) is calculated blade by following formula and places according to the adaptive inlet angle of diffuser and the guide vane angle of outlet
Angle.
(3) diffuser automatic optimizing design method:
In piano optimizing Design Software platform intergration CFX numerical value software for calculation, for diffuser section cascade solidity
Value, the guide vane angle of outlet and guide vane laying angle carry out the Automatic Optimal Design of guide vane, and steps are as follows for Automatic Optimal Design:
(3-1) determines the optimization design target of guide vane:
On the one hand the optimization design of diffuser needs to pay close attention to the hydraulic loss of diffuser itself, it is also necessary to pay close attention to returning for guide vane
Receive the effect of impeller outlet water velocity circular rector.Optimization aim quantitatively can be classified as 3, i.e. the hydraulic loss h of diffuserg, it is dynamic
It can recovery coefficient ζ and diffuser Outlet Section Static Shift coefficient pc。
The hydraulic loss h of diffuserg: the target component of evaluation diffuser itself design superiority and inferiority, in guide vane design process
It first has to consider so that diffuser itself loss reduction, to reach the higher purpose of unit whole efficiency.
Kinetic energy recovery coefficient ζ: the energy of impeller outlet water velocity circular rector is recycled according to the evaluation of effect conductor body of diffuser
Power, diffuser recycling velocity circulation is bigger, illustrates that guide vane physical efficiency converts pressure for the kinetic energy of water flow as far as possible, improves guide vane
Body transformation efficiency.
Diffuser Outlet Section Static Shift coefficient pc: evaluation water flow rectification state after diffuser, section distortion system
Number is smaller, illustrates that outlet stream is more uniform, and water flow is smaller in the hydraulic loss of diffuser second half section, can further improve device entirety
Efficiency.
Calculation formula is as follows:
In formula, E3、E4The respectively gross energy of guide vane import and export section.ν3、ν4The respectively speed of guide vane import and export section
Degree,For guide vane Outlet Section maximum stagnation pressure value；For guide vane Outlet Section minimum stagnation pressure value；For guide vane Outlet Section
Average total pressure.
(3-2) builds diffuser Automatic Optimal Design platform in piano optimization software, calls cfx software by piano
Numerical simulation calculation is carried out, Calling MATLAB software carries out result post-processing.
(3-3) is handled objective function using normalization method, converts single goal for multi-objective problem by weighted value
Problem, three target component weighted values of this patent take 1/3.
(3-4) gives initial design parameters value, carries out numerical simulation calculation to diffuser.According to calculated result and algorithm
It is required that modification design parameter value, until objective function is restrained.Specific Optimizing Flow is as shown in Figure 3.
The self-adaption flow-field inlet angle of each section of diffuser can be calculated according to technical solution (1), as shown in table 1.
The adaptive flow field inlet angle of table 1 determines
| Aerofoil profile section d/D | 0.4 | 0.4667 | 0.5333 | 0.6 | 0.667 | 0.7333 | 0.8 | 0.8667 | 0.9333 | 1.0 |
| Inlet angle α3/° | 31.3 | 35.6 | 39.5 | 42.3 | 44.1 | 44.9 | 43.2 | 40.6 | 38.3 | 33.2 |
Diffuser Automatic Optimal Design can be obtained according to technical solution (2) as a result, as shown in Fig. 5,6,7,8.Four in figure
Point is the fit line of Bezier control points.
Comparison is as shown in table 2 before and after objective function optimization.
The objective function comparison of the optimization of table 2 front and back
| Objective function | Before optimization | After optimization |
| Diffuser hydraulic loss △ h | 0.5869 | 0.1831 |
| Kinetic energy recovery coefficient ζ | 0.4154 | 0.8574 |
| Static Shift indices Pc | 0.4549 | 0.203 |
The hydraulic loss of guide vane is reduced to 18.31cm from 58.69cm, and optimization rear guide vane hydraulic loss reduces 40cm, can be with
Increase substantially unit efficiency；Kinetic energy recovery coefficient promotes the guide vane to 85.74%, after illustrating optimization from 41.54% simultaneously
Not only hydraulic loss has reduction by a relatively large margin, while can recycle more velocity circulations.The speed of guide vane Outlet Section point
The cloth uniformity is reduced to 20.3% by original 45.49%, and the range of decrease is obvious, can reduce the part hydraulic loss of outlet passage.
Diffuser Automatic Optimal Design result is larger compared with initial value increase rate, and effect of optimization is fairly obvious.
Claims (1)
1. a kind of Diffusion Vanes of Axial Pumps body automatic optimizing design method based on self-adaption flow-field, which is characterized in that including as follows
Step:
(1) the determination method at vane inlet angle:
The design of rear guide vane body inlet angle is carried out by following equation:
α3=α '3+Δα (1)
In formula, α3For vane inlet angle；Δ α is the vane inlet angle of attack, takes 0 °~5 °；α'3For vane inlet fluid flow angle；
The diffuser inlet angle of self-adaption flow-field determines that steps are as follows:
Diffuser is divided into 10 aerofoil profile sections from wheel hub to wheel rim, analyzes each aerofoil profile by (1-1) before diffuser design
Section diffuser inlet velocity triangle；
(1-2) calculates Interior Flow Field in Axial Pump Impeller VELOCITY DISTRIBUTION by CFX fluid calculation software, obtains axial-flow pump impeller outlet
Axis plane velocity (Vm2) and impeller outlet speed circumferential components (Vu2)；
Therefore (1-3) impeller outlet section and vane inlet section free of losses transition can obtain Vm3=Vm2, Vu3=Vu2；
(1-4) considers the excretion coefficient of guide vane blade, is calculated according to the diffuser inlet flow field velocity conditions being calculated
Diffuser adapts to the inlet angle in flow field, and calculation formula is as follows:
In formula, νm3For the axis plane velocity of vane inlet；νu3For the circumferential components of vane inlet speed；ψ3For guide vane vane inlet row
Squeeze coefficient；Su3For the thickness of vane inlet circumferencial direction；T is pitch；S3For the thickness of vane inlet stream interface, it is equal to guide vane blade
Actual (real) thickness；Z is the guide vane number of blade；
(1-5) repeat step (1-2)~(1-4) calculate separately to obtain amount to from wheel hub to wheel rim the guide vane blade of 10 sections into
Bicker, so that axial-flow pump impeller each section water flow from wheel hub to wheel rim can smoothly enter diffuser along the direction of guide vane blade,
Reduce diffuser import impact loss, improves the working efficiency of guide vane blade；
(2) based on the diffuser automatic optimizing design method of adaptive inlet angle:
After determining the adaptive flow field entrance angle of diffuser, also need to be determined according to the effect and status of diffuser diffuser other
Key design parameter establishes the Automatic Optimal Design platform of guide vane；
The determination method of shown key design parameter is as follows:
(2-1) determines each section wing cascade solidity value of diffuser:
According to the diffuser inlet angle determined in formula (1), it is dense that each section wing leaf grating of diffuser is acquired according to following formula
Degree:
In formula, diffusion angle of the ε between adjacent guide vane；
(2-2) determines the diffuser number of blade:
In view of the structural parameters of whole water pump assembly, to avoid play staff from resonating, the diffuser number of blade and water pump blade number should be mutual
For prime number；
(2-3) determines the diffuser angle of outlet:
In order to enable impeller outlet water flow recycles the velocity circulation of water flow as far as possible after diffuser, pressure is converted kinetic energy into
Can, it is expected that water flow exports to go out to flow from the horizontal by 90 ° in diffuser, consider diffuser water flowing out stream angle and guide vane blade exit
Angle is there are deviation, and about 5~9 ° of angle of lag, therefore the guide vane angle of outlet may be selected 85~95 °, each section wing angle of outlet can use equal
Value；
Blade angle is calculated by following formula according to the adaptive inlet angle of diffuser and the guide vane angle of outlet in (2-4)；
(3) diffuser automatic optimizing design method:
In piano optimizing Design Software platform intergration CFX numerical value software for calculation, for diffuser section cascade solidity value,
The guide vane angle of outlet and guide vane laying angle carry out the Automatic Optimal Design of guide vane, and specific step is as follows for Automatic Optimal Design:
(3-1) determines the optimization design target of guide vane:
On the one hand the optimization design of diffuser needs to pay close attention to the hydraulic loss of diffuser itself, it is also necessary to pay close attention to the recycling leaf of guide vane
The effect of outlet stream velocity circulation is taken turns, optimization aim quantitatively can be classified as 3, i.e. the hydraulic loss h of diffuserg, kinetic energy return
Receive coefficient ζ and diffuser Outlet Section Static Shift coefficient pc；
The hydraulic loss h of diffuserg: the target component of evaluation diffuser itself design superiority and inferiority first has in guide vane design process
Consider so that diffuser itself loss reduction, to reach the higher purpose of unit whole efficiency；
Kinetic energy recovery coefficient ζ: the ability of impeller outlet water velocity circular rector is recycled according to the evaluation of effect conductor body of diffuser, is led
Leaf body recycling velocity circulation is bigger, illustrates that guide vane physical efficiency converts pressure for the kinetic energy of water flow as far as possible, improves diffuser and turns
Change efficiency；
Diffuser Outlet Section Static Shift coefficient pc: evaluation water flow rectification state after diffuser, section distortion factor are got over
It is small, illustrate that outlet stream is more uniform, water flow is smaller in the hydraulic loss of diffuser second half section, can further improve device and integrally imitates
Rate；
Calculation formula is as follows:
In formula, E3、E4The respectively gross energy of guide vane import and export section；ν3、ν4The respectively speed of guide vane import and export section,For guide vane Outlet Section maximum stagnation pressure value；For guide vane Outlet Section minimum stagnation pressure value；It is average for guide vane Outlet Section
Stagnation pressure；
(3-2) builds diffuser Automatic Optimal Design platform in piano optimization software, calls cfx software to carry out by piano
Numerical simulation calculation, Calling MATLAB software carry out result post-processing；
(3-3) is handled objective function using normalization method, converts single-objective problem for multi-objective problem by weighted value,
Three target component weighted values of this patent take 1/3；
(3-4) gives initial design parameters value, carries out numerical simulation calculation to diffuser, according to calculated result and algorithm requirement
Design parameter value is modified, until objective function is restrained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811263220.8A CN109344535A (en) | 2018-10-28 | 2018-10-28 | A kind of Diffusion Vanes of Axial Pumps body automatic optimizing design method based on self-adaption flow-field |
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| CN112182978A (en) * | 2020-10-13 | 2021-01-05 | 桂林电子科技大学 | Multi-target water pump scheduling method based on adaptive angle constraint evolutionary algorithm |
| CN112901502A (en) * | 2021-03-16 | 2021-06-04 | 兰州理工大学 | Method for setting mounting angle of inlet of spatial guide vane of axial flow pump |
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Cited By (3)
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| CN112182978A (en) * | 2020-10-13 | 2021-01-05 | 桂林电子科技大学 | Multi-target water pump scheduling method based on adaptive angle constraint evolutionary algorithm |
| CN112901502A (en) * | 2021-03-16 | 2021-06-04 | 兰州理工大学 | Method for setting mounting angle of inlet of spatial guide vane of axial flow pump |
| CN112901502B (en) * | 2021-03-16 | 2021-11-26 | 兰州理工大学 | Method for setting mounting angle of inlet of spatial guide vane of axial flow pump |
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