Flow Simulation Using Radial and Rotational Sources
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Solution Overview
Problem
Current flow simulation methods, such as CFD, require significant calculation times and resources, making them unsuitable for real-time simulations, and are not representative of varying aircraft configurations, which is crucial for pilot training.
Innovation Solution
A method using radial and rotational sources to model the behavior of a structure in a flow, employing the Distributed Point Source Method (DPSM) to calculate flow vectors and forces, allowing for rapid and accurate simulations by breaking down structures into segments and calculating mean values of sources, thereby reducing calculation time and improving representation of real aircraft behaviors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If CFD methods are used to simulate flow around structures, then calculation accuracy is improved, but calculation time and resource requirements increase significantly
Solution Approach 1:
The structure is divided into multiple segments along each axis of the coordinate system. Elementary volumes are calculated for each segment, and mean values of rotational sources are calculated for each segment. This segmentation allows the complex flow simulation to be broken down into manageable parts that can be processed more efficiently while maintaining overall accuracy.
Solution Approach 2:
The invention changes the approach from solving full Navier-Stokes equations to using a simplified model with radial and rotational sources. By transforming the problem into calculating source distributions that satisfy boundary conditions, the method achieves real-time calculation capability while maintaining reasonable accuracy for flight simulation applications.
2Productivity
If tabulated aerodynamic data from test flights are used, then calculation speed is improved, but representation of varying aircraft configurations deteriorates
Solution Approach 1:
The invention transitions from static tabulated data to a dynamic calculation model. The radial and rotational source distributions are calculated in real-time based on the current aircraft configuration and flight conditions. This allows the simulation to adapt to varying configurations (flap positions, gear extensions, etc.) while maintaining real-time calculation capability, unlike fixed tabulated data.
Data Source
AI summary
A method for simulating a flow in which a structure is submerged, the method being implemented by computer, and the behavior of the structure in the flow being modeled by radial and rotational sources generating a velocity field representing the flow around the structure.