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

A Time-Parallel Disturbance Domain Update Method for Simulation of Aircraft Dynamic Characteristics

A technology of dynamic characteristics and updating methods, which is applied in the directions of instruments, geometric CAD, design optimization/simulation, etc., can solve problems such as acceleration, achieve the effect of improving computing efficiency and avoiding invalid calculations

Active Publication Date: 2022-06-17
BEIHANG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides a time-parallel disturbance domain update method for aircraft dynamics simulation, to solve the problem that the traditional method of aircraft dynamics prediction is limited by the time-dimensional sequential advance solution requirements and has an acceleration bottleneck

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
  • A Time-Parallel Disturbance Domain Update Method for Simulation of Aircraft Dynamic Characteristics
  • A Time-Parallel Disturbance Domain Update Method for Simulation of Aircraft Dynamic Characteristics
  • A Time-Parallel Disturbance Domain Update Method for Simulation of Aircraft Dynamic Characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0155] Figure 2a is a schematic diagram of the traditional time sequence advancing method provided by the present invention; Figure 2b It is a schematic diagram of the time parallel method provided by the present invention.

[0156] In the traditional method, parallel computing can only divide the calculation amount according to the grid, and one iteration can only calculate the flow field at one physical moment. t 0 to t n must be solved in order, such as Figure 2a shown. In the method of the present invention, the parallel calculation can not only divide the calculation amount according to the grid, but also solve the flow fields of multiple physical moments simultaneously in one iteration. t 0 to t n can be solved simultaneously, such as Figure 2b shown.

[0157] image 3 It is the evolution process diagram of the transient flow field and the dynamic calculation domain for solving the unsteady flow around the transonic airfoil by using 24 threads in parallel...

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 relates to the technical field of computational fluid dynamics, and provides a time-parallel disturbance domain update method for aircraft dynamic characteristic simulation. The method includes: reading in data; obtaining the Chebyshev transformation matrix components; initializing the flow field; establishing a dynamic calculation domain; solving the flow control equations of all time layers in parallel in the dynamic calculation domain; updating the dynamic calculation domain; judging whether the parallel solution in the current time period converges, Whether the calculation is completed, if it converges, jump to the dynamic calculation domain to solve all time layers in parallel, and enter the next iterative step of the parallel solution in the current time period; if the solution at the current moment has converged and the calculation is not completed, then jump to flow field initialization , enter the solution of the next time period; otherwise, output the result. The invention avoids the invalid calculation caused by adopting the static calculation field, solves the problem of acceleration bottleneck limited by the time dimension sequential advance solution requirement, and significantly improves the calculation efficiency.

Description

technical field [0001] The invention relates to the technical field of computational fluid dynamics, in particular to a time-parallel disturbance domain update method for the simulation of dynamic characteristics of an aircraft. Background technique [0002] High speed and high maneuverability have always been the performance characteristics pursued by modern aircraft research and development. During high-speed maneuvering flight, complex flow phenomena lead to aerodynamic effects far exceeding those expected in steady state, and even endanger flight safety. Therefore, accurate prediction of aircraft dynamic characteristics is indispensable for the design of aircraft aerodynamics, control and other systems. [0003] The numerical simulation of computational fluid dynamics based on the second-order backward differential double time-step method is currently the mainstream method for predicting the dynamic characteristics of aircraft. This method is a class of numerical metho...

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 Patents(China)
IPC IPC(8): G06F30/15G06F30/23G06F113/08
CPCG06F30/15G06F30/23G06F2113/08
Inventor 蒋崇文胡姝瑶高振勋许晨豪李椿萱
Owner BEIHANG 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