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Abstract: A Lagrange particle method based on SPH(Smoothed particle
hydrodynamics) is presented to simulate the free surface incompressible
fluid flow. Field variables and their derivatives are evaluated through
interpolation of kernel function without need of any mesh. A fractional
step method is used in time integration, which stabilizes the
computation of pressure. Owing to the virtue of Lagrangian formulation,
the smearing of free surface resulting from the numerical diffusion for
convective terms is eliminated completely. The method is applied to
simulate a benchmark breaking dam problem. The simulation results agree
well with the experimental results although fragmentation and
coalescence take place.
Key words:
Incompressible fluid flow Free surface SPH Fractional
step method
CLC No: TG24
国家自然科学基金资助项目(10202018). Received 20030113, received in revised form
20030728
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