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

Numerical simulation method of flight icing

A numerical method, aircraft technology, applied in the field of aeronautical engineering, can solve problems such as not considering the influence of water droplets

Inactive Publication Date: 2012-09-19
TIANJIN AEROCODE ENG APPL SOFTWAREDEV
View PDF2 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, this calculation method does not consider the influence of water droplets on air flow when solving the control equations of air movement and flow. Obviously, certain errors will occur

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
  • Numerical simulation method of flight icing
  • Numerical simulation method of flight icing
  • Numerical simulation method of flight icing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0086] Further illustrate the present invention with a specific embodiment below, a kind of numerical simulation method that is used for aircraft flight icing, this numerical simulation technology can realize with Fortran90 computer high-level programming language, and simulate two-dimensional NACA0012 wing by computer operation The state when encountering icing during airflight.

[0087] The conditions for the numerical simulation are:

[0088] Flow speed: 57m / s

[0089] Incoming temperature: 243K

[0090] Atmospheric pressure: 100kPa

[0091] Angle of attack: 0°

[0092] Liquid water content: 2.58g / m 3

[0093] Ultra-cold water droplet diameter: 50μm

[0094] Density of ice: 917kg / m 3

[0095] according to Figure 5 The detailed steps of the numerical simulation method calculation process of the aircraft flight icing that the present invention proposes are,

[0096] 1. Generation of computational grids around uniced aircraft. First generate a computational grid ar...

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 discloses a numerical simulation method for aircraft flight icing, which simulates the state of an aircraft encountering icing during flying. The method is mainly characterized by comprising an algorithm of the velocity resolution and the water film thickness of a wall surface water film surface in a single-fluid model used for simulating two phase flow flowing of air-ultracold water drop, an algorithm for tracking an icing interface through mesh refinement method in a water film icing state model for calculating ice layer shape and internal temperature, and a flow based on fixed computational grids and used for performing flight icing numerical simulation calculation through the models and the algorithms.

Description

technical field [0001] The invention relates to the field of aeronautical engineering, and is the application of computational fluid dynamics in the field of aeronautical engineering, in particular, a numerical method for simulating flight icing of aircraft. This numerical simulation technology can be implemented with a high-level computer programming language, and simulate the state of the aircraft when it encounters icing during the air flight through the operation of the computer. Background technique [0002] When the aircraft passes through the clouds within a certain flight altitude range, the ultra-cold liquid water droplets in the atmosphere (the temperature is below freezing point, but exists in the form of liquid water droplets) will collide with the surface of multiple parts of the aircraft to form water films, such as wings, aircraft, etc. The surface of the body, cockpit, empennage, engine air intake and other parts are prone to form a large amount of accumulate...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 路明
Owner TIANJIN AEROCODE ENG APPL SOFTWAREDEV
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