Modeling of Snow flow
Modeling of Snow flow
复制标题
雪流建模
作者：
J. D. Dent;T. E. Lang
摘要基于Navier-Stokes流体方程的有限差分，建立了模拟雪崩流动的数值计算机模型。为了验证和标定数值模型，进行了0.20 m深度、0 ~ 18 m/s流速的雪流试验。收集了有关位置、速度和流动深度随时间变化的数据，并与计算机上的模型运行进行了比较。对移动雪的摩擦力进行了研究，发现可以用一个与流速的平方成正比的项来建模。
Abstract A numerical computer model, based on the finite differencing of the Navier-Stokes fluid equations, is used to simulate snow-avalanche flow. In order to verify and calibrate the numerical model, snow-flow tests 0.20 m deep with flow velocities between 0-18 m/s were conducted. Data concerning position, velocity, and flow depth versus time were collected and compared to model runs on the computer. The frictional force on moving snow is investigated and found to be modeled by a term that is proportional to the square of the flow velocity.