The capabilities of the TELEMAC Modelling System to reproduce the formation and evolution of free and forced bars in straight and curved channels are investigated by reproducing the numerical experiments by Defina, Bernini et al., Crosato et al. and the laboratory experiences conducted by Whiting and Dietrich. Numerical results showed that the main features of the bars, such as wavelength, amplitude and celerity are well reproduced when the bed slope correction term is considered. Parameterization of secondary currents effects appeared to be an important parameter to mimic accurately the geometrical characteristics of the bars, but it is not crucial for the origin and development of the bars.
Numerical Simulations of Bar Formation and Propagation in Straight and Curved Channels
LEOPARDI, Angelo;
2013-01-01
Abstract
The capabilities of the TELEMAC Modelling System to reproduce the formation and evolution of free and forced bars in straight and curved channels are investigated by reproducing the numerical experiments by Defina, Bernini et al., Crosato et al. and the laboratory experiences conducted by Whiting and Dietrich. Numerical results showed that the main features of the bars, such as wavelength, amplitude and celerity are well reproduced when the bed slope correction term is considered. Parameterization of secondary currents effects appeared to be an important parameter to mimic accurately the geometrical characteristics of the bars, but it is not crucial for the origin and development of the bars.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
