About: Finite element analysis of the sap flow measurement method with continuous needle heating in the sapwood of trees

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Water flow represents the biggest energy flow in vegetation which also causes its magnificent climatic effect. From all the water taken up by plants, the majority is transpired, leading to leaf cooling (associated with the heat of vaporization) and only minor amounts of water are consumed by all the other processes (such as photosynthesis transport of assimilates, growth, etc.). The transpiration can be estimated through the measurement of sap flow rates in a tree stem. A series of measurement methods were developed for this purpose and they are mostly based on thermodynamic principles. This paper deals with the numerical analysis of the sap flow measurement method based on the continuous needle heating of a stem segment, the measurement of temperature differences using the thermocouples around the heated domain and sap flow calculation from the temperature differences. An appropriate model of heat transfer in the sapwood of trees is derived and solved. The model is based on a partial differential equation describing conductionconvection heat transfer during continuous linear heating and it is solved by the finite element method. Water flow represents the biggest energy flow in vegetation which also causes its magnificent climatic effect. From all the water taken up by plants, the majority is transpired, leading to leaf cooling (associated with the heat of vaporization) and only minor amounts of water are consumed by all the other processes (such as photosynthesis transport of assimilates, growth, etc.). The transpiration can be estimated through the measurement of sap flow rates in a tree stem. A series of measurement methods were developed for this purpose and they are mostly based on thermodynamic principles. This paper deals with the numerical analysis of the sap flow measurement method based on the continuous needle heating of a stem segment, the measurement of temperature differences using the thermocouples around the heated domain and sap flow calculation from the temperature differences. An appropriate model of heat transfer in the sapwood of trees is derived and solved. The model is based on a partial differential equation describing conductionconvection heat transfer during continuous linear heating and it is solved by the finite element method. (en)
Title	Finite element analysis of the sap flow measurement method with continuous needle heating in the sapwood of trees Finite element analysis of the sap flow measurement method with continuous needle heating in the sapwood of trees (en)
skos:prefLabel	Finite element analysis of the sap flow measurement method with continuous needle heating in the sapwood of trees Finite element analysis of the sap flow measurement method with continuous needle heating in the sapwood of trees (en)
skos:notation	RIV/62156489:43410/14:00223834!RIV15-MSM-43410___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(EE2.3.30.0017)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Trcala, Miroslav
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Mendelova univerzita v Brně / Lesnická a dřevařská fakulta
http://linked.open...dnocenehoVysledku	16893
http://linked.open...ai/riv/idVysledku	RIV/62156489:43410/14:00223834
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	sap flow measurement; heat conduction and convection; continuous needle heating; finite element method (en)
http://linked.open.../riv/klicoveSlovo	finite element method continuous needle heating heat conduction and convection sap flow measurement
http://linked.open...ontrolniKodProRIV	[DE51A52751C0]
http://linked.open...v/mistoKonaniAkce	La Coruna
http://linked.open...i/riv/mistoVydani	Ashurst Lodge, Ashurst, Southampton
http://linked.open...i/riv/nazevZdroje	Heat Transfer 2014 13th International Conference on Simulation and Experiments in Heat Transfer and its Applications
http://linked.open...in/vavai/riv/obor	BJ
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Postdocs in Biological Sciences at MENDELU
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Čermák, Jan Trcala, Miroslav
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2014-01-01 (xsd:date)
number of pages	9 (xsd:int)
http://purl.org/ne...btex#hasPublisher	WIT Press
https://schema.org/isbn	978-1-84564-794-0
http://localhost/t...ganizacniJednotka	43410

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