Abstract
Within the present work, the dam break flow over dry and wet beds are investigated experimentally, aiming to provide up-to-date data set and deeper insight into the morphology and hydrodynamics of the dam-break flood wave. The experiments are performed in a smooth prismatic channel with a rectangular cross-section. The wave profile and the downstream impact pressures are captured by a high-speed camera and several pressure sensors, respectively. The water depth is measured at five specified downstream locations through imaging processing. The laboratory observations are presented in terms of non-dimensional water level height, dynamic pressure variations on the impact wall, free-surface evolution, wave-front propagation, and high-resolution videos. Furthermore, two different numerical methods namely: (1) Volume-Of-Fluid (VOF) and (2) Moving Particle Semi Implicit (MPS) are also utilized to verify the repeatability of the experimental measurements. The comparisons show a satisfactory agreement between both models and the experiments. However, the results reveal that the Lagrangian model (MPS) slightly outperformed the standard VOF model in tracking highly deforming interfaces with severe topology changes. The dataset generated by small-scale laboratory investigations in the current work can provide a full panoramic view of dam-break flow which may be used as benchmark for validation of various CFD tools or understand the complex physics of dam-break wave and similar phenomena.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call