Possible effect of flow velocity on thawing rock-water-ice systems under local thermal non-equilibrium conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F20%3A85113" target="_blank" >RIV/60460709:41330/20:85113 - isvavai.cz</a>

Výsledek na webu

<a href="https://www-sciencedirect-com.infozdroje.czu.cz/science/article/pii/S0165232X18305111?via%3Dihub" target="_blank" >https://www-sciencedirect-com.infozdroje.czu.cz/science/article/pii/S0165232X18305111?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.coldregions.2019.102940" target="_blank" >10.1016/j.coldregions.2019.102940</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Possible effect of flow velocity on thawing rock-water-ice systems under local thermal non-equilibrium conditions

Popis výsledku v původním jazyce

Climate change causes thawing of many permafrost regions, increasing the rockfall and landslide hazard when the cementing ice melts and slopes become unstable. The thermo-hydro-mechanical processes are strongly coupled and complex to describe in those intrinsic multi-phase systems. So far, thermal models often utilize the local thermal equilibrium approach, assuming that all three phases (solid rock or soil, liquid water and ice) are in thermal equilibrium. While this approach is very tempting due to its easy implementation, there are situations especially during thawing in which temperature gradients exist between the involved phases. In such cases, the local thermal equilibrium approach has to be replaced by the more complex local thermal non-equilibrium approach in which the thermodynamic state of each phase is described by its own temperature. In those models, the heat transfer between the phases is described explicitly in dependence of the heat transfer coefficient and the contact area. Paramete

Název v anglickém jazyce

Possible effect of flow velocity on thawing rock-water-ice systems under local thermal non-equilibrium conditions

Popis výsledku anglicky

Climate change causes thawing of many permafrost regions, increasing the rockfall and landslide hazard when the cementing ice melts and slopes become unstable. The thermo-hydro-mechanical processes are strongly coupled and complex to describe in those intrinsic multi-phase systems. So far, thermal models often utilize the local thermal equilibrium approach, assuming that all three phases (solid rock or soil, liquid water and ice) are in thermal equilibrium. While this approach is very tempting due to its easy implementation, there are situations especially during thawing in which temperature gradients exist between the involved phases. In such cases, the local thermal equilibrium approach has to be replaced by the more complex local thermal non-equilibrium approach in which the thermodynamic state of each phase is described by its own temperature. In those models, the heat transfer between the phases is described explicitly in dependence of the heat transfer coefficient and the contact area. Paramete

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

COLD REGIONS SCIENCE AND TECHNOLOGY

ISSN

0165-232X

e-ISSN

1872-7441

Svazek periodika

2020

Číslo periodika v rámci svazku

170

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

7

Strana od-do

1-7

Kód UT WoS článku

000506666000022

EID výsledku v databázi Scopus

2-s2.0-85074766574