Abstract
Authors
WATANABE Tsutomu, OHTANI Yoshikazu
Year
1998
Title
樹幹熱伝導の計算手法に関する考察
A comparative study on Calculation Method of Heat Conduction in Trees Stems
Journal
農業気象
Journal of Agricultural Meteorology
Volume
54(1)
Page
47-54
DOI
Keywords
計算手法、森林、貯熱、熱収支、バイオマス
Biomass, Calculation scheme, Energy budget, Forest, Heat storage.
URL
http://rms1.agsearch.agropedia.affrc.go.jp/contents/JASI/pdf/society/57-1499.pdf
Abstract
As a part an estimation method of the heat storage rate within forest biomass, two simple
schemes are presented for a calculation of the heat
conduction into a cylindrical material. One is a modified version of the so-called Force-
Restore method, and the other is a method based on the digital
filter. Both methods are tested against analytical solutions of the heat-conduction
equation for given diurnal cycles of the cylinder-surface
temperature. The modified Force-Restore method gives acceptable results when the diurnal
change in the surface temperature is not very different from a
sinusoidal wave of 1-day cycle. The digital filter method can produce correct results for
any patterns of diurnal cycles, if the time series of the
surface temperature is given for more than 1-day period centered by the evaluation time of
heat storage. Both method can be applied to an entire
forest, if stems of the forest are classified into adequate classes in terms of their
radii.
Site
KWG
Remarks
in Japanese with an English abstract