A Boundary Element Method For Time Domain Analysis Of
Nonlinear Fluid Sloshing
Author(s)
Y. Zang, A. Nestegaard and A. Braathen
Abstract
A boundary element method for time domain
analysis of nonlinear fluid sloshing
Y. Zang* % A. Nestegaard ^ and A. Braathen^
* Fuzhou University, Fuzhou, China, 350002.
* Det Nor she Veritas, H0vik, Norway.
Abstract
A time domain boundary element method is presented for the analysis of
nonlinear fluid sloshing in a tank. The fluid is considered inviscid and the fluid
motion irrotational. The nodal points on the free surface are considered as
Lagrangian points, their positions are followed, and for each time step the
nonlinear free surface condition is considered on the real moving boundary. For
time stepping, the previous surface position is taken as the first position for the
iteration at the current time step, and two to five iterations will give a convergent
surface position of the current time step. For every 5 time steps, surface
smoothing is carried out to eliminate the saw-toothed appearance and to ensure
time iteration sta
Keywords
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