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Numerical Treatment of the Navier-Stokes Equations (Hardcover, Softcover Reprint Of The Original 1st 1990 Ed.)
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Numerical Treatment of the Navier-Stokes Equations (Hardcover, Softcover Reprint Of The Original 1st 1990 Ed.)
Series: Notes on numerical fluid mechanics, Vol 30
Expected to ship within 10 - 15 working days
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The most frequently used method for the numerical integration of
parabolic differential equa tions is the method of lines, where one
first uses a discretization of space derivatives by finite
differences or finite elements and then uses some time-stepping
method for the the solution of resulting system of ordinary
differential equations. Such methods are, at least conceptually,
easy to perform. However, they can be expensive if steep gradients
occur in the solution, stability must be controlled, and the global
error control can be troublesome. This paper considers a
simultaneaus discretization of space and time variables for a
one-dimensional parabolic equation on a relatively long time
interval, called 'time-slab'. The discretization is repeated or
adjusted for following 'time-slabs' using continuous finite element
approximations. In such a method we utilize the efficiency of
finite elements by choosing a finite element mesh in the time-space
domain where the finite element mesh has been adjusted to steep
gradients of the solution both with respect to the space and the
time variables. In this way we solve all the difficulties with the
classical approach since stability, discretization error estimates
and global error control are automatically satisfied. Such a method
has been discussed previously in 3] and 4]. The related boundary
value techniques or global time integration for systems of ordinary
differential equations have been discussed in several papers, see
12] and the references quoted therein."
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