Coupled Dynamics in Soil by Yijian Zeng

Author:Yijian Zeng
Language: eng
Format: epub
Publisher: Springer Berlin Heidelberg, Berlin, Heidelberg

(4.37)

where is the thermal gradient in the ith constituent, and the volumetric fraction of the ith constituent. Based on De Vries’ approach [12], the ratio of the average temperature gradient in the constituent to the average temperature gradient of the bulk medium can be expressed by a conceptual model

(4.38)

where is the ratio; the thermal conductivity of the ith constituent (J cm−1 s−1 °C−1); and the ‘shape factor’ of the ith constituent (see Table 4.1). For the solid particles, constant values for as given in Table 4.1 are assumed. For liquid water, no value is needed since its coefficient is zero. The value of is considered as a function of moisture content as follows [33]Table 4.1Properties of Soil Constituents [12]

Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.