Numerical Study of Air Distribution System for a Passenger Aircraft Based on 1D and 3D Coupling

The air distribution system is one of the key systems for ensuring safety and comfort passenger aircraft. large number components poses a severe challenge to efficiency, accuracy, convergence simulation. For 3D CFD method, complex meshes leads low computational efficiency. 1D simulation has high but local accuracy inadequate. To solve this problem, Fluid System Simulation Software Flomaster with linearization algorithm used establish system-level model. flow characteristic curve obtained by (computational fluid dynamics) method irregular ducts introduced into model iteration. effects resistance thermal insulation on performance are studied using results show that affects total uniformity cabin distribution, improvement weakened increasing layer thickness, application thicker layers downstream pipeline more advantageous limit maximum temperature change conditioned air.