论文部分内容阅读
陡坡急流条件下的推移质运动常伴有较大幅度的随机变化,这种随机涨落现象在各个时间尺度下普遍存在。由于这种涨落现象的存在,随机理论模型往往更适用于描述这一类问题。为进一步研究推移质运动的随机属性,作者利用包含群体输移机制的Markov随机模型,通过理论和实验方法研究输沙停时的概率密度分布函数(PDF),这些研究揭示出推移质运动中的尺度分离现象。在前人工作的基础上,给出输沙停时PDF理论解的另外一种推导方式推导。与较早的研究相比,该推导更为简洁、直接。该理论解已通过数值和室内实验数据得到了验证。
Steep slopes under the conditions of thrusting movement often accompanied by a more substantial random changes, this phenomenon of random fluctuations ubiquitous in all time scales. Due to the existence of such fluctuations, stochastic theoretical models are often more suitable for describing this type of problem. In order to further study the stochastic properties of plutonic movement, the author uses the Markov stochastic model that includes the transport mechanism of groups to study the probability density distribution function (PDF) of sediment transport loss by theoretical and experimental methods. These studies reveal that Scale separation phenomenon. Based on the work of predecessors, this paper gives another derivation of the PDF theoretical solution to the problem of sediment transport failure. Compared with earlier studies, the derivation is more concise and straightforward. The theoretical solution has been verified by numerical and laboratory data.