Numerical solution of a instability problem
نویسنده
چکیده
The numerical solution of a Rayleigh-Taylor instability problem where an inviscid liquid of finite depth is accelerated into a gas of semi-infinite extent is obtained by transforming the irregular flow domain into a rectangular domain by a coordinate transformation. The free surface equation is solved by a Crank-Nicolson procedure. The boundary condition at the free surface for the velocity potential + which contains the time derivative of + is also treated by an implicit scheme. The numerical results agree well with those obtained by higher order perturbation analysis.
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