A source term model for drifting snow based on the assumption of local equilibrium saltation
A source term model for drifting snow based on the assumption of local equilibrium saltation
复制标题
基于局部平衡跃移假设的流雪源项模型
DOI:
10.1016/j.coldregions.2020.103175
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发表时间:
2021
影响因子:
4.1
通讯作者:
Shu Liu
中科院分区:
文献类型:
--
作者:
Duote Liu;Bin Wang;Yongle Li;Shu Liu
This paper presents a source term model to predict the drifting snow near the ground, which is based on the assumption of local equilibrium saltation. The features of the one way coupled conservation equation for the snow transport in the Eulerian reference frame are examined through calibrating the input sources versus output snow concentrations by using a numerical experiment method. The target source term for the snow concentration compensation due to the surface erosion is derived with the help of a semi-empirical mass flow rate of the equilibrium saltation and the calibration results under different friction velocities, threshold friction velocities and settling velocities. With the validation on the equilibrium saltation above an open and flat snow bed, rational saltation mass concentration is solved. Using this source term model, good adaptabilities for various wind and snow conditions are confirmed. With the application to the non-equilibrium saltation around a cube, intuitively plausible distributions of the snow concentration near the ground and the transient topography changes in the snow surface are predicted through a time dependent dynamic mesh solution. The non-equilibrium properties of the drifting snow revealed in space and time are further evidenced by the spatial distributions and time histories of the friction velocity and the saltation snow concentration
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影响因子:
4.3
作者:
R. Bintanja
通讯作者:
R. Bintanja
DOI:
10.2307/633037
发表时间:
1985
期刊:
--
影响因子:
--
作者:
R. Greeley;J. Iversen
通讯作者:
R. Greeley;J. Iversen
DOI:
10.1016/0167-6105(90)90082-n
发表时间:
1990
影响因子:
4.8
作者:
R. Kind
通讯作者:
R. Kind
影响因子:
2.9
作者:
M. Naaim;F. Naaim-Bouvet;H. Martínez
通讯作者:
M. Naaim;F. Naaim-Bouvet;H. Martínez
DOI:
10.1016/0167-6105(93)90344-n
发表时间:
1991-11
影响因子:
4.8
作者:
T. Sato;T. Uematsu;T. Nakata;Y. Kaneda
通讯作者:
T. Sato;T. Uematsu;T. Nakata;Y. Kaneda