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A Modeling Method for Starting Process of Micro Gas Turbine Engine

An engine starting and gas turbine technology, applied in geometric CAD, design optimization/simulation, special data processing applications, etc., can solve the problems of low efficiency, large amount of modeling data, low modeling accuracy, etc. The effect of high accuracy

Active Publication Date: 2020-05-19
DALIAN UNIV OF TECH +1
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Problems solved by technology

[0005] The present invention proposes a modeling method for the start-up process of a micro-gas turbine engine in order to solve the problems of large amount of modeling data, low efficiency and low modeling accuracy in the prior art.

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  • A Modeling Method for Starting Process of Micro Gas Turbine Engine
  • A Modeling Method for Starting Process of Micro Gas Turbine Engine
  • A Modeling Method for Starting Process of Micro Gas Turbine Engine

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Embodiment Construction

[0027] In order to make the purpose, technology and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and examples.

[0028] A method for modeling the starting process of a micro gas turbine engine, comprising the following steps:

[0029] Step 1: The starting process of the micro gas turbine engine is divided into three stages. In the first stage, the engine speed is from zero to the speed at which the turbine starts to generate power, and the engine is completely accelerated by the starter; in the second stage, the turbine starts to generate power. Speed ​​to starter disengagement; the third stage, from starter disengagement speed to idle speed;

[0030] Model the engine starting process in terms of its phases;

[0031] In the first stage, the engine speed is from zero to the speed at which the turbine starts to generate power (that is, from zero speed to ignition spe...

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Abstract

The invention belongs to the technical field of engine modeling and provides a method for modeling the starting process of a micro gas turbine engine. The method comprises the following steps: modeling the rotational speed of the micro gas turbine engine; modeling the relationship between performance parameters and speed of micro gas turbine engines; performing error analysis. Existing modeling methods of micro gas turbine engine are mostly based on pure mechanism or machine learning, which is difficult to accurately describe the starting process of micro gas turbine engine, and machine learning requires a large number of experimental data. In the engineering practice, the pure mechanism operation is complicated, the efficiency is low, and the modeling accuracy is not high. The invention provides a method for modeling a starting process of a micro gas turbine engine based on the combination of a mechanism and an identification method, which makes up for the shortcomings of the prior art. The invention has the advantages of simple operation and high accuracy, and can realize the modeling of the whole micro gas turbine engine. This method has certain expansibility and can be extendedto other fields.

Description

technical field [0001] The invention belongs to the technical field of engine modeling, and in particular relates to a modeling method for the starting process of a micro gas turbine engine. Background technique [0002] A micro gas turbine engine is a complex thermodynamic system consisting of a compressor, a combustor and a turbine. In the research process of micro gas turbine engine starting, how to establish a mathematical model below the idle speed of micro gas turbine engine and perform numerical calculation of starting performance can provide reference for the control of micro gas turbine engine starting process. Therefore, modeling the start-up process of a micro gas turbine engine is very valuable. [0003] In terms of micro gas turbine engine modeling technology, there are few published documents at home and abroad, and there are no relevant patents involving this aspect. In the existing literature, most methods such as support vector machine are used to model th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F30/17
CPCG06F30/17G06F30/20
Inventor 林平杜宪马艳华孙希明彭凯
Owner DALIAN UNIV OF TECH
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