Numerical analysis of continuous models of structures in non-linear wind flow using the time-marching approach

Abstract

Abstract This paper deals with the aeroelastic behavior of a flexible chimney undergoing transverse lift forces due to the vortex shedding. The chimney is modeled as a continuous beam having non-uniform distribution of parameters. The standard wake-oscillator model is used as the model of the vortex-induced response. Three levels of generalization of this model are presented: point force, continuous force and supplied by spanwise correlation. Numerical analysis of the models is performed by the simulation (time-marching) approach. The obtained results indicate that the classical phenomena, such as the locking and peak amplitude, did not appear. Instead, new effects, e.g., the reverse locking and multiperiodic motion have been observed. Therefore, experimental work is strongly recommended to verify the obtained results.