Calculation method of inverse problem design of rotary mechanical vane

A technology of rotating machinery and calculation methods, applied in calculation, design optimization/simulation, special data processing applications, etc., can solve problems such as lack of very effective accuracy, and achieve the effect of clear thinking, high calculation efficiency, and good convergence stability

Inactive Publication Date: 2017-01-18
张明
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, there is no very effective and high-precision method to reversely process the airfoil (cold state) from the working airfoil (hot state)

Method used

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  • Calculation method of inverse problem design of rotary mechanical vane
  • Calculation method of inverse problem design of rotary mechanical vane
  • Calculation method of inverse problem design of rotary mechanical vane

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Embodiment Construction

[0034] The present invention will be further explained below in conjunction with specific embodiments.

[0035] refer to Figure 1-2 , the calculation method for the inverse problem design of the rotating machinery blade proposed by the present invention, the specific operation process includes the following steps:

[0036] Step 1, input the model that needs anti-torsion design, establish the computational domain of computational fluid analysis (CFD), set boundary conditions, set residual conditions, and perform steady calculations to obtain the flow field distribution and pressure distribution around the blade at a stable moment;

[0037] Step 2, write the pressure data on the blade surface (fluid-solid coupling surface), the data format is divided into four columns, which are X coordinate value, Y coordinate value, Z coordinate value and pressure;

[0038] Step 3, input the model that needs reverse torsion design, load the pressure load in step 2, set the boundary condition...

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Abstract

The invention discloses a calculation method of the inverse problem design of a rotary mechanical vane. The calculation method comprises the following steps: on the basis of a finite element method, calculating displacement situations of all nodes of the vane under the action of fluid force and centrifugal force; calculating a fluid-structure interaction displacement value; by taking a fluid-structure interaction displacement result of the previous step as the reverse increment of predeformation of a next step, regenerating a finite element node and a unit, carrying out fluid-structure interaction calculation, and repeating the cycle; when a latest fluid-structure interaction calculation displacement result is matched with a thermal state vane profile, obtaining a finite element model which meets requirements; converting the finite element model into a geometric model through reverse software. The calculation method which is put forward by the invention is simple and easy to understand, feasible, simple in operation, clear in thinking, high in calculation efficiency and accuracy, and good in residual error stability, and a calculation result conforms to reality.

Description

technical field [0001] The invention relates to the technical field of inverse problem design of rotary machine blades, in particular to a calculation method for inverse problem design of rotary machine blades. Background technique [0002] The main purpose of the blades of rotating machinery is to convert energy between "kinetic energy of the fluid" and "mechanical energy". The efficiency, noise and other performance indicators of rotating machinery are related to the type of blade. Usually, to study a new type of blade that meets the requirements, we need to carry out full parametric modeling or local parametric modeling of the blade to clarify the basic design variables of the blade. For example, which of the leading edge, trailing edge type, chord length, installation angle and other parameters can be used as design variables, and specify the performance indicators we need, and then set some constraints, such as the maximum and minimum range of blade diameter, the maximu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/17G06F30/23
Inventor 张明施春荣李晶
Owner 张明
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