Počet záznamů: 1
On parameterization of heat conduction in coupled soil water and heat flow modelling
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SYSNO ASEP 0385805 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název On parameterization of heat conduction in coupled soil water and heat flow modelling Tvůrce(i) Votrubová, J. (CZ)
Dohnal, M. (CZ)
Vogel, T. (CZ)
Tesař, Miroslav (UH-J) ORCID, SAI, RIDZdroj.dok. Soil & Water Research. - : Česká akademie zemědělských věd - ISSN 1801-5395
Roč. 7, č. 4 (2012), s. 125-137Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova advective heat flux ; dual-permeability model ; soil heat transport ; soil thermal conductivity ; surface energy balance Vědní obor RIV DA - Hydrologie a limnologie CEP GA205/08/1174 GA ČR - Grantová agentura ČR CEZ AV0Z20600510 - UH-J (2005-2011) UT WOS 000311588800001 EID SCOPUS 84869202559 DOI https://doi.org/10.17221/21/2012-SWR Anotace Soil water and heat transport plays an important role in various hydrologic, agricultural, and industrial applications. Accordingly, an increasing attention is paid to relevant simulation models. In the present study, soil thermal conditions at a mountain meadow during the vegetation season were simulated. A dual-continuum model of coupled water and heat transport was employed to account for preferential flow effects. Data collected at an experimental site in the Šumava Mountains, southern Bohemia, during the vegetation season 2009 were employed. Soil hydraulic properties (retention curve and hydraulic conductivity) determined by independent soil tests were used. Unavailable hydraulic parameters were adjusted to obtain satisfactory hydraulic model performance. Soil thermal properties were estimated based on values found in literature without further optimization. Three different approaches were used to approximate the soil thermal conductivity function, λ(θ): (i) relationships provided by Chung and Horton (ii) linear estimates as described by Loukili, Woodbury and Snelgrove, (iii) methodology proposed by Côté and Konrad. The simulated thermal conditions were compared to those observed. The impact of different soil thermal conductivity approximations on the heat transport simulation results was analysed. The differences between the simulation results in terms of the soil temperature were small. Regarding the surface soil heat flux, these differences became substantial. More realistic simulations were obtained using λ(θ) estimates based on the soil texture and composition. The differences between these two, related to neglecting vs. considering λ(θ) non-linearity, were found negligible. Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2013
Počet záznamů: 1