Heat transfer by seepage in sand: Influence of saturated hydraulic conductivity and porosity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F21%3APU141137" target="_blank" >RIV/00216305:26110/21:PU141137 - isvavai.cz</a>
Result on the web
<a href="https://actahydrotechnica.fgg.uni-lj.si/en/paper/a34yg" target="_blank" >https://actahydrotechnica.fgg.uni-lj.si/en/paper/a34yg</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.15292/acta.hydro.2021.05" target="_blank" >10.15292/acta.hydro.2021.05</a>
Alternative languages
Result language
angličtina
Original language name
Heat transfer by seepage in sand: Influence of saturated hydraulic conductivity and porosity
Original language description
Heat transfer within the soil is a complex process in the presence of seepage flow. In such conditions, the soil’s thermal behavior is influenced by the thermal and hydraulic properties of the medium as well as the initial conditions and boundary conditions to which the medium is subjected. This paper presents the experimental and numerical studies of heat transfer within the sand subjected to the seepage flow. It focuses on the influence of saturated hydraulic conductivity and the porosity of medium on the heat transfer process. The temperature distribution within the sand was monitored by the optical fiber Distributed Temperature Sensor (DTS). The experiment was performed on three types of silica-dominated sands with different saturated hydraulic conductivities and different Soil Water Characteristic Curve (SWCC). In addition to the experimental study, a coupled hydrothermal numerical model was designed in FEFLOW software and validated by comparing its results with the experimental measurements. To determine the influence of porosity and saturated hydraulic conductivity on heat transfer, we analyzed the numerical models for different values of porosity and saturated hydraulic conductivity. The numerical and experimental studies showed that the thermal velocity is higher in sand with higher saturated hydraulic conductivity and temperature declination occurs more quickly due to the heat convection process. Saturated sand with larger porosity has an overall higher heat capacity, wherefore the temperature declination started later in the measuring points but dropped down lower close to the temperature of the upstream water.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
<a href="/en/project/TH04030087" target="_blank" >TH04030087: Tools for levees system management</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Acta hydrotechnica
ISSN
1581-0267
e-ISSN
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Volume of the periodical
34
Issue of the periodical within the volume
60
Country of publishing house
SI - SLOVENIA
Number of pages
15
Pages from-to
61-75
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85107941552