2025/04/21 by Wenkai Du, Du, Wenkai, Guangzhong Gao +9
Engineering · #Aerodynamics #Aeroelasticity #Aeroelasticity and Vibration Control #Control theory (sociology) #Extended Kalman filter #FOS: Electrical engineering #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Hydraulic and Pneumatic Systems #Kalman filter #Modal #Nonlinear system #Systems and Control (eess.SY) #Vibration #Vibration Control and Rheological Fluids #Wind tunnel #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2504.20063
openalex publication_date 2025/04/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Elastically-supported section model tests are the most basic experimental technique in wind engineering, where helical springs are commonly employed to simulate the two-degree-of-freedom low-order modal motions of flexible structures. However, the traditional technique has intrinsic limitations in accurately modeling nonlinear structural behaviors and accurate adjustments of nonlinear structural damping. This study proposes a novel Real-Time Aeroelastic Hybrid Simulation system for section model wind tunnel tests by integrating an active control algorithm of adaptive Kalman filter. The proposed system enables the simulation of nonlinear heave-transverse-torsion coupled vibrations of a section model under the action of the oncoming wind. The structural properties, i.g. mass, damping and stiffness, are numerically simulated via an active control system, and the aerodynamic forces are physically modelled via the model-wind interaction in the wind tunnel. To validate the feasibility and accuracy of the proposed RTAHS system, a MATLAB/Simulink-FLUENT/UDF co-simulation framework is developed. Numerical verification results indicate that the proposed algorithm effectively estimates the motion responses in both linear and nonlinear scenarios.