Spatio-temporal dynamics in large arrays of fluid-elastic, Toda-type oscillators

New experiments on the dynamics of 300 elastic oscillators in a steady cross flow are described. Impact constraints between the rods mimic Toda-type exponential potentials. Unlike single row dynamics, which lead to limit cycle behavior, multi-row arrays seem to exhibit chaotic though not necessarily, low-dimensional dynamics, at a critical flow value. With increasing flow velocity, organized wave-like structures appear to develop as the impact rate between rods increases. Experimental models of this type may serve to help understand complex dynamics in large array heat exchange systems. It may also be a model to understand wind crop dynamics and damage. (C) 2001 Elsevier Science B.V. All rights reserved.