.png){kind=icon}
.png){kind=icon}
Return
Efficient ASM/CFD/CSD coupling method for helicopter numerical virtual flight simulation
.png){kind=icon}
PRE
AI
DOI：10.1016/j.ast.2025.111206.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
• This paper presents an aeroelastic-motion coupled method to balance accuracy and efficiency in helicopter numerical virtual flight (NVF) simulations. In the aeroelastic calculation, an advanced actuator surface model based on anisotropic three-dimensional Gaussian kernel is adopted. The influence of aerodynamic forces on the flowfield is taken into account by adding a momentum source term to the governing equations, avoiding the cost of body-fitted blade grids. A loose coupling strategy exchanges airloads and deformation between CFD and CSD solvers each revolution. A robust overset assembly technique enables six-degree-of-freedom motion. Based on the UH-60A Black Hawk helicopter, the effectiveness of the coupling method was verified under complex flow conditions involving BVI, dynamic stall, and transonic shock wave. An NVF simulation of a UTTAS pull-up maneuver was performed. The time histories of vertical loads on the rotor and fuselage showed strong agreement with test data. In terms of efficiency, the coupling method demonstrated better performance than fully blade-resolved simulations. This study represents a significant step forward toward multi-physics NVF simulation of modern helicopters.
Journal
IF:
5.8
Papers:
1.0W
Citations:
3.0W