• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Soil Moisture Prediction During Freeze and Thaw Using a Coupled Heat and MoistureFlow Model
【24h】

Soil Moisture Prediction During Freeze and Thaw Using a Coupled Heat and MoistureFlow Model

机译：利用耦合热湿流动模型预测冻融过程中的土壤水分

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A coupled heat flow and moisture flow model (FROSTB) was used to simulate largescale freeze-thaw experiments to assess its ability to predict soil moisture conditions during freeze and thaw. The experimental data consists of temperature and soil moisture profiles through freeze-thaw cycles of a 1-m layer of frost-susceptible silty sand over roughly 2 m of gravely sand. Two experimental conditions were modeled: (1) where the soil moisture was lower than specific retention (less than 12% by weight) and no water table was present (dry case) and (2) where the soil was fairly wet and the water table was approximately 1 m deep (wet case). During freezing, FROSTB tends to predict ice contents higher than those observed, which causes the simulated soil column to thaw slower. During thawing the predicted moisture contents in the thawed soil were close to the measured values for the wet case but were always higher than the measured moisture contents for the dry case. Possible reasons for the discrepancy are discussed.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号