Water movement and heat transfer simulations in a soil under ryegrass

被引:28
作者
Antonopoulos, V. Z. [1 ]
机构
[1] Aristotle Univ Thessaloniki, Sch Agr, Dept Hydraul, Thessaloniki 54124, Greece
关键词
D O I
10.1016/j.biosystemseng.2006.05.008
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Soil temperature is an important factor that affects most processes and reactions occurring in the unsaturated zone. In this paper, a mathematical model based on the solution of the heat transfer equation in the soil with the finite element method is developed. The heat transfer model has been incorporated as part of the integrated model WANISIM (water and nitrogen simulation), which describes the soil water movement and the mass transport and nitrogen transformations in the soil. Three different types of boundary condition at soil surface are considered: soil temperature varies cosinusoidally; heat balance; and Erosion-Productivity Impact Calculator (EPIC) model approach. The soil temperature of EPIC model approach is examined in comparison of the conduction-convection heat transfer model. Data from a soil covered by grass for a time period of 10 months are used for the application and checking of the model. A significant agreement was observed between the simulation results and the measurements of water content and soil temperature. The heat transfer model with heat balance at soil surface boundary condition gives more accurate results (average error vertical bar E-m vertical bar <= 0.96 degrees C and root mean square error R-RMSE ranged from 11.79 to 19.05), in comparison with soil surface temperature boundary condition (vertical bar E-m vertical bar <= 1.39 degrees C and R-RMSE ranged from 18-82 to 27-76). Different functions of thermal conductivity evaluation result in non-significant differences of soil temperature evaluation. (c) 2006 IAgrE. All rights reserved Published by Elsevier Ltd
引用
收藏
页码:127 / 138
页数:12
相关论文
共 37 条
[1]  
Allen R. G., 1998, FAO Irrigation and Drainage Paper
[2]  
Antonopoulos V. Z., 1993, Water Resources Management, V7, P237, DOI 10.1007/BF01675306
[3]  
Antonopoulos VZ, 1998, AGR WATER MANAGE, V37, P21, DOI 10.1016/S0378-3774(98)00040-7
[4]   Simulation of water and nitrogen balances of irrigated and fertilized corn-crop soil [J].
Antonopoulos, VZ .
JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING, 2001, 127 (02) :77-83
[5]   SIMULATION-MODEL OF THE WATER-BALANCE OF A CROPPED SOIL - SWATRE [J].
BELMANS, C ;
WESSELING, JG ;
FEDDES, RA .
JOURNAL OF HYDROLOGY, 1983, 63 (3-4) :271-286
[6]  
CHRISTOPHER P, 1982, WATER RESOUR RES, V18, P489, DOI 10.1029/WR018i003p00489
[7]   THE EFFECT OF DIFFERENT POST-RESTORATION CROPPING REGIMES ON SOME PHYSICAL-PROPERTIES OF A RESTORED SOIL [J].
DAVIES, R ;
YOUNGER, A .
SOIL USE AND MANAGEMENT, 1994, 10 (02) :55-60
[8]   WATER AVAILABILITY IN A RESTORED SOIL [J].
DAVIES, R ;
YOUNGER, A ;
CHAPMAN, R .
SOIL USE AND MANAGEMENT, 1992, 8 (02) :67-73
[9]  
de Vries D.A., 1975, HEAT MASS TRANSFER B
[10]  
de Vries D.A., 1963, PHYS PLANT ENV, P210, DOI DOI 10.12691/AEES-2-2-1.