一种基于数据的方法,用转移函数噪声模型来建模卡斯特弹排放
Max Gustav Rudolph1, Raoul Alexander Collenteur2,3, Alireza Kavousi1
1Institute of Groundwater Management, Technische Universität Dresden, Dresden, Germany.
概括
一个新的转移函数噪声 (TFN) 模型有效模拟了石弹排放,在基准研究中表现优于其他方法. 这种数据驱动的方法为复杂的地系统的水文建模提供了一个有希望的替代方案.
科学领域:
- 水文学的水文学
- 环境科学 环境科学
- 水资源管理 水资源管理
背景情况:
- 石灰岩含水层是全球重要的淡水来源.
- 精确的水文建模岩石弹排放仍然是一个重大挑战.
- 之前的研究,如卡斯特建模挑战 (KMC),已经探索了各种建模方法.
研究的目的:
- 应用和评估一个转移函数噪声 (TFN) 模型与一个桶式充电模型相结合,用于模拟岩弹排放.
- 用KMC基准数据将TFN模型的性能与其他模型进行比较.
- 使用贝叶斯方法量化TFN模型的不确定性.
主要方法:
- 一个传输函数噪声 (TFN) 模型与一个桶式充电模型相结合.
- 三步最小平方校准确定了最佳的数据模型组合.
- 马尔科夫链蒙特卡洛 (MCMC) 采样被用于不确定性量化.
- 该模型在一个看不见的测试期间得到了验证.
主要成果:
- 与KMC基准中的所有其他模型相比,TFN模型表现优越.
- 该模型提供了一个物理上可信的地系统的表示,得到了现场数据的支持.
- TFN模型在模拟上升的肢体和洪水衰退方面表现出色,尽管中等和基流条件的表现不那么准确.
结论:
- TFN模型是一个高性能,数据驱动的替代方案,用于岩石弹排放的建模.
- 在未来对岩系统的水文研究中,应该考虑这种方法.
- 进一步细化可能会改善基流和中流条件的表示.
相关概念视频
Design Example: Creating a Hydraulic Model of a Dam Spillway
230
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
230
Typical Model Studies
385
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
385
Rapidly Varying Flow
101
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
101
Relation between Mathematical Equations and Block Diagrams
444
In a spring-mass-damper system, the second-order differential equation describes the dynamic behavior of the system. When transformed into the Laplace domain under zero initial conditions, this equation can be effectively analyzed and manipulated. The transformation into the Laplace domain converts differential equations into algebraic equations, simplifying the process of isolating the output.
444
Underflow Gates
83
Underflow gates are vital for controlling water flow in irrigation canals. The three main types of underflow gates — vertical, radial, and drum gates — serve different purposes while ensuring effective flow management. Vertical gates move up and down, generating a free-flowing water jet; radial gates pivot to regulate the flow; and drum gates rotate for precise adjustments. The flow through these gates is influenced by downstream conditions, resulting in free or drowned outflow.Free and...
83
Conservation of Mass in Moving, Nondeforming Control Volume
1.1K
Stormwater detention basins are essential in managing runoff during heavy rainfall, particularly in urban areas where impervious surfaces increase the risk of flooding. Understanding the conservation of mass in these systems allows engineers to optimize basin performance, balancing inflow, outflow, and water storage.
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
1.1K


