The Sintering Process in Snow
The Sintering Process in Snow
复制标题
雪中的烧结过程
DOI：
10.3189/s0022143000019535
复制
发表时间：
1966
影响因子：
3.4
通讯作者：
C. Keeler
中科院分区：
文献类型：
--
作者：
R. Ramseier;C. Keeler
雪粒或冰球之间的键的增长可归因于表面扩散、体积扩散和蒸发冷凝。为了区分这些可能的机制，确定了两组雪样的无侧限抗压强度随时间的变化。一组在大气条件下烧结，而另一组则浸入硅油中。后一组的强化速率要低得多，这表明蒸发-冷凝一定是大气条件下雪中质量传输的主要机制。讨论了各种传质系数的可能大小。
The growth of bonds between snow grains or ice spheres has been variously attributed to surface diffusion, volume diffusion, and evaporation–condensation. To distinguish among these possible mechanisms the unconfined compressive strength of two groups of snow samples was determined as a function of time. One group was allowed to sinter under atmospheric conditions while the other group was kept immersed in silicone oil. The much lower rate of strengthening of the latter group suggests that evaporation–condensation must be the major mechanism of mass transport in snow under atmospheric conditions. The possible magnitudes of the various mass transfer coefficients are discussed.