Abstract
The present paper focuses on the validation of a SPH-based numerical modeling for dam break flow over a dry bed. Numerical simulation is implemented on the basis of an open-source code model named DualSPHysics. The numerical sensitivity analysis is first performed to study the appropriate particle number used for dam break flow simulation in a 2D dry bed channel. Then, extensive model validations by comparison with laboratory data are conducted to calibrate three major parameters used in the model, i.e., the kernel function, the smoothing length and the artificial viscosity. Subsequently, the specified parameter values are used in the successive simulation. The model can accurately predict the instantaneous water surface profile measured in the dam break experiments, as well as the measured time-varying wave front positions. Accordingly, the present numerical model demonstrates its efficiency and reliability for 2D dam break flow simulation over an initial dry bed.
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Acknowledgements
This study was financially supported by the Natural Science Foundation of China (No. 11632012), and the Natural Science Foundation of Zhejiang Province, China (No. LZ19E090001).
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Zeng, J., Shen, J., Liu, H. (2020). A Parametric Study of Dam Break Flow Feature Over a Dry Bed Using SPH Modeling. In: Trung Viet, N., Xiping, D., Thanh Tung, T. (eds) APAC 2019. APAC 2019. Springer, Singapore. https://doi.org/10.1007/978-981-15-0291-0_12
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