67
Views
0
CrossRef citations to date
0
Altmetric
Original Articles

Application of the conservative averaging for the filtration problem with large velocity

&
Pages 251-261 | Received 22 Sep 2001, Published online: 14 Oct 2010
 

Abstract

In this paper we consider a filtration problem in a rectangle or a perturbed rectangle region with an essential nonlinearity and high values of velocity. The conservative averaging method with quadratic or rational approximation over the rectangle thickness gives us 1D problem instead of the original 2D problem. This ID solution can be used as an initial approximation for the original 2D problem. The conservative averaging method is considered and results of some numerical experiments are presented.

Straipsnyje sprendžiamas dvimatis filtracijos uždavinys. Sritis yra stačiakampe arba deformuota stačiakampe. Nagrinejamas atvejis, kai skysčio tekejimo greitis yra didelis ir būtina naudoti netiesini matematini modeli. Panaudojant vidurkinimo metoda y koordinates kryptimi sprendinys aproksimuojamas parabole, o lygtis yra vidurkinama. Gautoji vienmate difuzijos‐konvekcijos lygtis yra sprendžiama skaitiškai. Taip sudarytas sprendinys ne visada yra monotoniškas, todel nagrinejamas ir dar vienas artinys, kuris aprašomas racionalia trupmena. Pateikti skaičiavimo eksperimento rezultatai, gauti sprendžiant uždavini dviem atvejais, kai vyrauja konvekcijos procesas arba difuzijos procesas. Algoritmo ir iteracinio proceso konvergavimas nera ištirtas.

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.