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水田驱动叶轮轮叶下土壤流动特性与动力性能研究（Soil Flow Rule and Dynamic Performance under a Paddy-field Wheel Lug）
水田驱动叶轮 轮叶 土壤流动 动力性能
2010/12/28
在自制的小土槽试验装置上，进行了水田驱动叶轮轮叶下土壤流动的拍摄和轮叶上土壤反力的测试。在研究轮叶下土壤流动轨迹、流动模式和流动区大小变化规律的基础上，分析了轮叶产生的推进力和支承力，驱动效率的变化规律及其与土壤流动之间的关系。深入分析了有较大陷深和作旋轮线运动的轮叶的驱动效率较低的原因。
Daily River Flow Forecasting Using Artificial Neural Networks and Auto-Regressive Models
Streamflow forecasting Neural networks Auto-regressive models
2009/10/10
Estimating the flows of rivers can have a signi cant economic impact, as this can help in agricultural water management and in providing protection from water shortages and possible flood damage. This...
A Comparison of Recursive Least Squares Estimation and Kalman Filtering for Flow in Open Channels
Optimal control Least squares estimation Kalman flters Open-channel flow
2009/10/10
An integrated approach to the design of an automatic control system for canals using a Linear Quadratic Gaussian regulator based on recursive least squares estimation was developed. The one-dimensiona...
Simulating Water Flow to a Subsurface Drain in a Layered Soil
Drain discharge finite element layered soil HYDRUS-2D
2009/1/13
The objective of the work presented in this paper was to simulate drain flow into subsurface drainage pipes for a layered soil profile using a finite element based HYDRUS-2D model. Data from the drai...