3) soil freezing
土壤冻结
1.
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。
2.
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。
3.
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。
4) frozen soil
冻结土壤
6) soil temperature
土壤温度
1.
The effects of soil temperature and moisture of artificial ecological restoration under different rocky desertification degrees in karst region—A case study of the Huajiang gorge area,Guizhou;
喀斯特地区不同等级石漠化人工生态恢复的土壤温度及水分效应——以贵州省花江峡谷为例
2.
Eftect of green grassland on soil temperature;
草坪绿地对土壤温度的调节作用
3.
Effects of water content variation on soil temperature process and water exchange;
含水量变化对土壤温度和水分交换的影响研究
补充资料：冻结温度
分子式：
CAS号：
性质：橡胶分子随着温度下降其热运动减弱，当达到某一温度时，分子链及分子链段被冻结；失去橡胶的弹性而硬化，呈冻结状态，该温度即冻结温度。有时也称玻璃化温度.橡胶的冻结温度与材料本身的化学组成及分子结构有关，分子链柔性越大，冻结温度也越低。
CAS号：
性质：橡胶分子随着温度下降其热运动减弱，当达到某一温度时，分子链及分子链段被冻结；失去橡胶的弹性而硬化，呈冻结状态，该温度即冻结温度。有时也称玻璃化温度.橡胶的冻结温度与材料本身的化学组成及分子结构有关，分子链柔性越大，冻结温度也越低。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条