Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multistage axial flow compressor characteristic correction method based on one-dimensional average streamline method

A correction method and streamline method technology, applied in the field of simulation, can solve problems such as complex flow conditions, and achieve the effects of fast calculation speed, improved accuracy and high precision

Active Publication Date: 2021-04-09
HARBIN ENG UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the flow in the turbomachinery has strong three-dimensional, swirling and unsteady characteristics, and the flow situation in the multi-stage axial flow compressor is particularly complicated, so the empirical model is difficult to be generally applicable to various flow situations

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multistage axial flow compressor characteristic correction method based on one-dimensional average streamline method
  • Multistage axial flow compressor characteristic correction method based on one-dimensional average streamline method
  • Multistage axial flow compressor characteristic correction method based on one-dimensional average streamline method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0031] combine figure 1 , taking the intersection of the average streamline and the front and rear edges of each row of blades as the calculation point of the flow field parameters, the flow parameters at the positions of each calculation station represent the overall aerodynamic layout of the compressor, and the empirical models such as lagging angle and loss reflect the viscous Influenced by factors such as turbulence, turbulence, trans-sound, unsteady and other factors, the outlet parameters of blades at all levels (rows) are calculated along the axial direction, so as to advance the calculation, and finally the overall performance and aerodynamic layout parameters of the whole machine are obtained through superposition. An aerodynamic analysis method for multi-stage axial flow compressors based on the one-dimensional mean streamline method is established. One...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention aims to provide a multistage axial flow compressor characteristic correction method based on a one-dimensional average streamline method, a multistage axial flow compressor performance analysis method based on the one-dimensional average streamline method is established according to a physical law followed by operation of a multistage axial flow compressor, and an automatic calibration method is developed for a blade grid performance model; a blade wake momentum thickness coefficient of which the compressor pressure ratio and efficiency are matched with experimental data of a specific working point is searched for, and a complete blade wake momentum thickness coefficient scalar database of a known condition range of the compressor is established; and the wake momentum thickness coefficient of the solved working point is solved according to a known blade wake momentum thickness coefficient scalar database to achieve automatic calibration of the characteristics of the gas compressor. The method is high in calculation speed, has universality, can predict, encrypt and extrapolate the characteristics of the gas compressor, and is used for predicting the characteristics of the inlet guide vane and the stationary vane when the inlet guide vane and the stationary vane are adjustable, or calculating the overall performance under the rotating speed without experimental data or CFD data.

Description

technical field [0001] The invention relates to a simulation method, in particular to a gas turbine simulation method. Background technique [0002] In the performance solution of the one-dimensional average streamline method, the influence of fluid viscosity is introduced for performance analysis, so empirical models such as lagging angle and loss have a significant impact on the accuracy of one-dimensional calculation. The cascade empirical models in the current open literature are mainly for standard blade shapes. However, with the development of turbomachinery, modern airfoils and advanced technologies such as bending and sweeping obtained through parametric optimization or inverse design are widely used in modern high-performance compressors. The applicability needs to be further tested. Therefore, how to use the model automatic calibration method to calibrate the empirical model becomes the key to performance analysis. [0003] Empirical models are usually averages ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G06F30/17G06F30/28G06F113/08G06F119/14
CPCG06F30/17G06F30/28G06F2113/08G06F2119/14Y02T90/00
Inventor 王志涛张君鑫李健高楚铭明亮于海超刘硕硕李淑英李铁磊张宗熙
Owner HARBIN ENG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com