Nonlinear finite element analysis of thermal inertia in heat-balance sap flow measurement
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F14%3A00208768" target="_blank" >RIV/62156489:43410/14:00208768 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.ijthermalsci.2013.09.007" target="_blank" >http://dx.doi.org/10.1016/j.ijthermalsci.2013.09.007</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijthermalsci.2013.09.007" target="_blank" >10.1016/j.ijthermalsci.2013.09.007</a>
Alternative languages
Result language
angličtina
Original language name
Nonlinear finite element analysis of thermal inertia in heat-balance sap flow measurement
Original language description
This paper deals with the numerical solution of a three-dimensional model of nonstationary nonlinear heat transfer in the sapwood of trees during sap flow measurement by a thermodynamic method based on volumetric heating of a stem segment (Trunk Heat Balance -- THB -- method). The model respects the dependence of physical properties on temperature and moisture and also the anisotropic nature of wood. The corresponding partial differential equation is then solved by finite element method. The main aim ofthis study was to analyze the thermal inertia of the THB method with horizontal references thermocouples. We compared the results of the simpler stationary and the more complex nonstationary model and we can conclude that the thermal inertia of the THBmethod is not negligible (mainly for smaller flows around 0.01 kg.m-2.s-1). In addition, the authors have shown that the influence of moisture on the recorded sap flow data Qrec is negligible but there is small influence on Qfic and hence
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BJ - Thermodynamics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/EE2.3.30.0017" target="_blank" >EE2.3.30.0017: Postdocs in Biological Sciences at MENDELU</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Thermal Sciences
ISSN
1290-0729
e-ISSN
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Volume of the periodical
76
Issue of the periodical within the volume
Feb 2014
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
200-207
UT code for WoS article
328804500018
EID of the result in the Scopus database
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