Solving the nonlinear Richards equation model with adaptive domain decomposition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00228923" target="_blank" >RIV/68407700:21110/14:00228923 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41330/14:63900

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0377042714001502" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0377042714001502</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cam.2014.03.010" target="_blank" >10.1016/j.cam.2014.03.010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Solving the nonlinear Richards equation model with adaptive domain decomposition

Popis výsledku v původním jazyce

Modeling the transport processes in a vadose zone plays an important role in predicting the reactions of soil biotopes to anthropogenic activity, e.g. modeling contaminant transport, the effect of the soil water regime on changes in soil structure and composition, etc. Water flow is governed by the Richards equation, while the constitutive laws are typically supplied by the van Genuchten model, which can be understood as a pore size distribution function. Certain materials with dominantly uniform pore sizes (e.g. coarse-grained materials) can exhibit ranges of constitutive function values within several orders of magnitude, possibly beyond the length of real numbers that computers can handle. Thus a numerical approximation of the Richards equation often requires the solution of systems of equations that cannot be solved on computer arithmetics. An appropriate domain decomposition into subdomains that cover only a limited range of constitutive function values, and that will change adapt

Název v anglickém jazyce

Solving the nonlinear Richards equation model with adaptive domain decomposition

Popis výsledku anglicky

Modeling the transport processes in a vadose zone plays an important role in predicting the reactions of soil biotopes to anthropogenic activity, e.g. modeling contaminant transport, the effect of the soil water regime on changes in soil structure and composition, etc. Water flow is governed by the Richards equation, while the constitutive laws are typically supplied by the van Genuchten model, which can be understood as a pore size distribution function. Certain materials with dominantly uniform pore sizes (e.g. coarse-grained materials) can exhibit ranges of constitutive function values within several orders of magnitude, possibly beyond the length of real numbers that computers can handle. Thus a numerical approximation of the Richards equation often requires the solution of systems of equations that cannot be solved on computer arithmetics. An appropriate domain decomposition into subdomains that cover only a limited range of constitutive function values, and that will change adapt

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BA - Obecná matematika

OECD FORD obor

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Projekt

<a href="/cs/project/GP13-11977P" target="_blank" >GP13-11977P: Metoda adaptivní časové dekompozice pro řešení úloh Richardsovy rovnice v porézním prostředí vykazující kontrastní hydraulické charakteristiky.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Computational and Applied Mathematics

ISSN

0377-0427

e-ISSN

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Svazek periodika

2014

Číslo periodika v rámci svazku

270

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

2-11

Kód UT WoS článku

000337660100002

EID výsledku v databázi Scopus

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