The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
The search session has expired. Please query the service again.
Displaying 541 –
560 of
1115
The phenomenon of roll waves occurs in a uniform open-channel flow down an incline, when the Froude number is above two. The goal of this paper is to analyze the behavior of numerical approximations to a model roll wave equation which arises as a weakly nonlinear approximation of the shallow water equations. The main difficulty associated with the numerical approximation of this problem is its linear instability. Numerical round-off error can easily overtake the numerical solution and yields false...
The phenomenon of roll waves occurs in a uniform open-channel
flow down an incline, when the Froude number is above two.
The goal of this paper is to analyze the behavior of numerical
approximations to a model roll wave equation ut + uux = u,u(x,0) = u0(x),
which arises as a weakly nonlinear approximation of the shallow water
equations. The main difficulty associated with the numerical approximation of
this problem is its linear instability. Numerical round-off error
can easily overtake the...
In the present paper, Daubechies' wavelets and the computation of their scaling coefficients are briefly reviewed. Then a new method of computation is proposed. This method is based on the work [7] concerning a new orthonormality condition and relations among scaling moments, respectively. For filter lengths up to 16, the arising system can be explicitly solved with algebraic methods like Gröbner bases. Its simple structure allows one to find quickly all possible solutions.
The main contribution of this work is to provide an algorithm for the computation of the GCD of 2-D polynomials, based on DFT techniques. The whole theory is implemented via illustrative examples.
The mathematical analysis of a heat equation and its solutions is a standard part of most textbook of applied mathematics and computational mechanics. However, serious problems from engineering practice do not respect formal simplifications of such analysis, namely at high temperatures, for phase-change materials, etc. This paper, motivated by the material design and testing of a high-temperature thermal accumulator, as a substantial part of the Czech-Swedish project of an original equipment for...
In this paper, we present some interesting connections between a number of Riemann-solver free approaches to the numerical solution of multi-dimensional systems of conservation laws. As a main part, we present a new and elementary derivation of Fey’s Method of Transport (MoT) (respectively the second author’s ICE version of the scheme) and the state decompositions which form the basis of it. The only tools that we use are quadrature rules applied to the moment integral used in the gas kinetic derivation...
In this paper, we present some interesting connections between a
number of Riemann-solver free approaches to the numerical solution
of multi-dimensional systems of conservation laws. As a main part,
we present a new and elementary derivation of Fey's Method of
Transport (MoT) (respectively the second author's ICE version of
the scheme) and the state decompositions which form the basis of it.
The only tools that we use are quadrature rules applied to the
moment integral used in the...
Currently displaying 541 –
560 of
1115