Complete machine variable-dimension simulation performance simulation process control method

A technology of performance and dimension, applied in the direction of design optimization/simulation, geometric CAD, etc., can solve the problems of increasing the cost, cycle and risk of engine development, and achieve the effect of avoiding tediousness and inefficiency and ensuring simulation accuracy

Pending Publication Date: 2022-07-22
BEIHANG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a method for controlling the simulation process of the variable-dimensional simulation performance of the whole machine, so as to solve the reciprocating cycle

Method used

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  • Complete machine variable-dimension simulation performance simulation process control method
  • Complete machine variable-dimension simulation performance simulation process control method
  • Complete machine variable-dimension simulation performance simulation process control method

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Experimental program
Comparison scheme
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Embodiment 1

[0097] figure 2 It is a structural diagram of a single-shaft split-exhaust turbofan engine provided by an embodiment of the present invention.

[0098] image 3 It is a frame diagram of the simulation performance simulation flow of the whole machine variable dimension simulation provided by the embodiment of the present invention.

[0099] Step 1: Input engine operating parameters, component performance, and control laws to calculate design points, and determine engine design parameters and key cross-sectional areas as shown in Table 1.

[0100] Table 1. Engine Design Parameters

[0101]

[0102] Figure 4It is the meridian geometry diagram of the engine fan provided by the embodiment of the present invention.

[0103] Figure 5 It is a three-dimensional grid diagram of the engine fan provided by the embodiment of the present invention.

[0104] Step 2: Calculate the boundary conditions of the three-dimensional model of the fan through the zero-dimensional model of t...

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Abstract

The invention relates to the technical field of aero-engine performance simulation, and provides a whole machine variable-dimension simulation performance simulation process control method. The method comprises the steps that relevant parameters of engine design points are obtained according to relevant parameters of the design points of a zero-dimensional engine model, and fan boundary conditions are obtained through calculation of the zero-dimensional engine model; based on the fan outlet static pressure initial guess value, fan performance parameters and zero-dimensional engine model performance parameters are obtained; whether the fan performance parameters and the zero-dimensional engine performance parameters meet the balance relation or not is judged, if not, the following steps are continued, Newton-Raphson algorithm iteration is completed, and engine variable-dimension simulation model performance parameters are obtained. According to the method, automatic calling of zero-dimensional and three-dimensional programs and automatic mutual reading of parameters are realized, complexity and low efficiency of manual calling of the model and input of parameters are avoided, control simulation precision is guaranteed, and calculation burden of a variable-dimension simulation model is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of aero-engine performance simulation, in particular to a method for controlling a whole machine variable-dimensional simulation performance simulation process. Background technique [0002] Research and development of advanced aero-engines includes aerodynamics, heat exchange, structural mechanics, and other disciplines, which also require extensive and complex and expensive experiments on entire engines and components. In order to save cost and time, numerical simulation has become an indispensable part of the field of aero-engine design. With the rapid development of computing power, simulation technology is widely used to support the modeling of complex engine components, performance studies, fault diagnosis and so on. [0003] The traditional engine performance simulation model is divided into design point calculation and non-design point calculation. Design point calculation, given component performa...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F30/15
CPCG06F30/20G06F30/15
Inventor 陈敏唐海龙贾梓豪
Owner BEIHANG UNIV
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