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Column infiltration test
Water flow and solute Transport in a field soil profile under grass - seasonal simulation
Two-dimension unidirectional solute transport - comparison with analytical solution
One-dimensional solute transport with nitrification chain - comparison with analytical solution
One-dimensional solute transport with nonlinear cation adsorption - Data from Selim et al. (1987)
One-dimensional solute transport with non-equilibrium cation adsorption
Axisymetrical three-dimensional water and solute infiltration test
One-dimensional water flow with multiple hysteretic loops, data from Lenhard et al. (1991)
Water flow and solute transport from furrow to a drain
Three wetland examples
Version 3.0, released in early May of 2018, is the first major upgrade of HYDRUS since 2011. In this version, we have included in the standard computational modules a new flexible Reservoir Boundary Condition (in 2D), expanded Root Growth features, included an inverse option for 3D, and added many new graphical capabilities of the GUI. Detailed description of new features and changes in Version 3.01 of HYDRUS (2D/3D) are given in Šimůnek et al. (2018). Version 3.2 includes new modules Furrow 3D that describes the coupled surface-subsurface flow and transport processes occurring during furrow irrigation and fertigation and Slope Cube 3D that additionally calculates transient fields of soil suction, suction stress, total and effective stresses, and local factor of safety.
The HYDRUS code incorporates hysteresis by using the empirical model introduced by Scott et al. [1983] and Kool and Parker [1987]. This model assumes that drying scanning curves are scaled from the main drying curve, and wetting scanning curves from the main wetting curve.
不饱和土壤水文属性是由以下理论总结出来的，1980年的 Genuchten、1964年的Brooks 和Corey、1994年的Durner、1995年的Kosugi和修正的 Genuchten的型解析函数。这些修正内容对接近饱和状态的水利属性做了进一步的描述。HYDRUS软件包含了由1983年Scott et al.以及1987年Kool 和 Parker引进的结合实证模拟的滞变。 这个模型假定干燥扫描曲线是从主要干燥曲线而来的，湿润扫描曲线是从主要湿润曲线而来的。HYDRUS还包括1991年的Lenhard et al.和1992年Lenhard 和 Parker的滞变模型，它通过跟踪历史逆转点从而消除泵。HYDRUS在给定的土壤环境下可实行缩放过程已达到近似液压变化，通过一组线性标度变化工具，涉及个别土壤水力特性与参考土壤的关系。
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