In order to search the effect of soil freezing on heat exchange characteristics of ground heat exchangers in cold zone,develops a heat transfer model of soil around ground heat exchangers taking soil freezing into consideration,and solves the freezing phase change problem by apparent heat capacity method.
为了探讨寒冷地区土壤冻结对地源热泵地埋管换热器换热特性的影响,建立了考虑土壤冻结的地埋管周围土壤传热模型,并利用显热容法对冻结相变问题进行了处理。
Based on the numerical calculus of soil freezing and the apparent heat capacity method, completely and partly implicit difference schemes of the heat transfer equation were deduced by the finite difference method with variable space step.
针对土壤冻结过程的数值分析,基于显热容法用有限差分法构造出热传导方程变空间步长的半隐格式和全隐格式。
Based on the basic equations of simultaneous soil water and heat transfer during soil freezing, the coupled equation of moisture and heat is deduced.
计算结果表明，该方法不仅能模拟冻结过程中土壤水分、温度的变化，且在计算中土壤含水量较低时不需要在冻结区引入冰的阻抗系数的概念，较好地改进了已有的数值模拟，为模拟各种不同条件下的土壤冻结过程创造了条件。
Review of the study on land surface process in soil freezing and thawing;
土壤冻融条件下的陆面过程研究综述
Coupled model of moisture and heat reaction during soil freezing and thawing under environmental climate condition
环境气候条件下土壤冻融过程中湿热耦合作用模型研究
Using the model of simultaneo us moisture and heat transfer during soil freezing and thawing, a numerical sumulation is carried out to the whole course of freezing and thawing in Hetao irrigation areas in Inner Mongolia Autonomous Region.
应用土壤冻融过程中水热耦合迁移模型，对内蒙古河套灌区地下水浅埋条件下整个土壤冻融过程进行了模拟，分析了越冬期土壤水热迁移规律。
The difficulties in the establishment and solution for mathematical model of frost heaving of soil are introduced.
介绍了土壤冻胀数学模型建立及求解的难点 ,综述了国内外有关土壤冻胀的数学模型研究的现状 ,展望了在土壤冻胀数学模型研究领域中需进一步改进和完善的方向及有关的发展趋
BP network model research on water and salt transfer forecast in seasonal freezing and thawing soils;
季节性冻融土壤水盐动态预测BP网络模型研究
RESEARCH OF GROUND FROZEN DEPTH IN SEASONALLY FROZEN AREAS
季节性冻土地区土壤冻结深度的研究
Simulation Research on Soil Freezing Temperature Field Surrounding Ground Heat Exchanger
地埋管换热器周围土壤冻结温度场的模拟研究
Analysis on Soil Frozen and Thawed Regulation under Different Soil Surfaces
不同地表条件下土壤冻结、融化规律分析
Simulation Study on Freezing Heat Extraction of U Buried Pipe Heat Exchanger of Ground-source Heat Pump
土壤源热泵U型埋管换热器冻结取热过程的模拟研究
soil consistence
土壤结持度, 土壤稠性
Thermal analysis of artificially frozen wall in seasonal frozen area
季节冻土地区人工冻土墙的冻结特性研究
Soil Temperature Variation in Plough Layer and Soil Freeze-Thaw Characteristics during Seasonal Freezing and Thawing Period
季节性冻融期耕作层土壤温度及土壤冻融特性的试验研究
Study on Northern Yinshan Shallow Soil Freezing-thawing Feature Experiment;
阴山北部浅层土壤冻融特性试验研究
Experimental Study on Freeze-thaw Process of Soil after Autumn Irrigation
冬灌条件下土壤冻融过程的试验研究
FEOZEN-HEAVING OF GROUND-SOURCE HEAT PUMP SYSTEM IN COLD REGION
寒区土壤源热泵埋管冻胀安全性分析
Progress on N_2O emission from soil in the freeze-thaw process
冻融条件下土壤N_2O排放研究进展
Freezing-Thawing Condition of Main Dryland Farming Soil Areas in Northeast China
东北主要旱地耕作土壤冻融环境分析
Research on the Forming and Thawing of Frozen Soil Walls by Artificial Ground Freezing Method;
人工地层冻结冻土帷幕形成与解冻规律研究
Research on the Influence of Frost Heave of Frozen Soil to Derrick Footing in Freezing Sinking Shaft;
冻结法凿井冻土冻胀对井架基础影响的研究
Clay gives the soil body.
粘土能使土壤板结。
Field Measurement Analysis of Natural Thawing and Artificial Thawing of Frozen Soil by Artificial Ground Freezing
人工地层冻结冻土自然解冻与强制解冻实测分析
The Effect of Alternative Freezing and Thawing on Soil Organic Matter and Nitrogen Potassium Nutrition of Black Soil;
冻融交替对黑土土壤有机质及氮钾养分的影响
Monitoring Soil Water in Frozen Soil on the Central Tibetan Plateau
青藏高原中部冻土环境下土壤水分监测