Autor: Koko, J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Operator-splitting and Lagrange multiplier domain decomposition methods for numerical simulation of two coupled Navier-Stokes fluids
Autorzy:: Bresch, D.
Koko, J.
Powiązania:: https://bibliotekanauki.pl/articles/908383.pdf
Data publikacji:: 2006
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: dwoistość
gradient sprzężony
przepływ Naviera-Stokesa
domain decomposition
duality
conjugate gradient
Navier-Stokes flows
Opis:: We present a numerical simulation of two coupled Navier-Stokes flows, using operator-splitting and optimization-based nonoverlapping domain decomposition methods. The model problem consists of two Navier-Stokes fluids coupled, through a common interface, by a nonlinear transmission condition. Numerical experiments are carried out with two coupled fluids; one with an initial linear profile and the other in rest. As expected, the transmission condition generates a recirculation within the fluid in rest.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2006, 16, 4; 419-429
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Newtons iteration with a conjugate gradient based decomposition method for an elliptic PDE with a nonlinear boundary condition
Autorzy:: Koko, J.
Powiązania:: https://bibliotekanauki.pl/articles/907312.pdf
Data publikacji:: 2004
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: metoda Newtona
metoda gradientu sprzężonego
warunek brzegowy nieliniowy
Newton's method
conjugate gradient method
nonlinear PDE
Opis:: Newton's iteration is studied for the numerical solution of an elliptic PDE with nonlinear boundary conditions. At each iteration of Newton's method, a conjugate gradient based decomposition method is applied to the matrix of the linearized system. The decomposition is such that all the remaining linear systems have the same constant matrix. Numerical results confirm the savings with respect to the computational cost, compared with the classical Newton method with factorization at each step.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2004, 14, 1; 13-18
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Mesh r-Adaptation for Unilateral Contact Problems
Autorzy:: Beal, P.
Koko, J.
Touzani, R.
Powiązania:: https://bibliotekanauki.pl/articles/907893.pdf
Data publikacji:: 2002
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: sprężystość liniowa
unilateral contact
linear elasticity
mesh adaptivity
node movement
Opis:: We present a mesh adaptation method by node movement for two-dimensional linear elasticity problems with unilateral contact. The adaptation is based on a hierarchical estimator on finite element edges and the node displacement techniques use an analogy of the mesh topology with a spring network. We show, through numerical examples, the efficiency of the present adaptation method.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2002, 12, 1; 9-16
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

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