Results 241 to 250 of about 15,407,758 (296)

Error Control for Phase Change Problems

1999
The presence of interfaces, and associated lack of regularity, is responsible for global numerical pollution effects for phase change problems. A cure consists of equidistributing discretization errors in adequate norms by means of highly graded meshes and varying time steps.
R. H. Nochetto, A. Schmidt, C. Verdi
openaire   +3 more sources

Inverse 2D phase change problem

1994
Numerical resolution of a 2D inverse phase change problem has been proposed. Two different methods have been tested. The first one use a sequential minimisation procedure, on a sliding time horizon. The second one is based on the transformation of the initial non linear phase change problem in a linear one, which is solved by linear quadratic optimal ...
C. BĂ©nard   +3 more
openaire   +2 more sources

On the Spherically Symmetric Phase Change Problem

International Journal of Fluid Mechanics Research, 1999
Abstract : The objectives of this paper are: To show that the application of the 'thin thermal boundary layer' approximation to collapsing bubbles is incorrect although this approximation has been used by all investigators interested in cavitation. To show that the available analyses based on the heat balance integral method contain a significant error
J. Riznic, Gunol Kojasoy, Novak Zuber
openaire   +1 more source

The Problem of Controllability with Phase Space Change

2023
In this paper, we consider differential systems of the following structure: at two consecutive time intervals the motion of the object is described by two different systems of differential equations. We study the controllability of the object described by such system from the initial set in one space to the given set in another space through so-called '
openaire   +1 more source

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