Introduction

Rusteau-1D Help

Rusteau-1D simulates the one-dimensional movement of water, heat and multiple solutes in variably saturated soils. Its numerical engine is a port of the HYDRUS-1D code Šimůnek et al. (2009), verified against the results of HYDRUS-1D 4.17 Šimůnek et al. (2013). This help describes the interface page by page, the equations behind every calculation and the scientific sources they are based on.

The main window of Rusteau-1D with the navigation of the input and results pages on the left.

How to use this help

Contents (left panel): the topics in the order of the help of HYDRUS-1D – introduction, projects and files, the input pages, the results pages, the theory and the reference part.
Index: keywords and section headings in alphabetical order; type a few letters to filter.
Search: full-text search; all words must occur in a topic.
F1 or the ? button next to a page title opens the topic of the page you are working on. Resting the mouse on any input shows a short description (tooltip).
Blue text links to other topics; author–year citations such as van Genuchten (1980) link to the References (resting the mouse on a citation shows the full reference).
Open in web browser writes the whole help as HTML pages (offline) and opens them in your web browser; Help → Export the HTML help… writes them into the folder Rusteau-1D help of a folder of your choice.

Chapters

Chapter	What you find there
Introduction	what the program does, getting started, the main window, the workflow of a project, units and the relation to HYDRUS-1D
Projects and files	project files, HYDRUS-1D import and export, examples, output files, the command line program
Input (pre-processing)	one topic per input page, from Processes & units to Check & run and the parameter estimation
Results (post-processing)	observation points, profiles, boundary fluxes, soil hydraulic properties, run-time information, mass balance, parameter estimation results, measured data, the figure editor for publication figures and the comparison of runs
Theory and equations	the governing equations: water flow, soil hydraulic models, hysteresis, root water uptake, boundary conditions, evapotranspiration, heat and solute transport, the numerical solution and the parameter estimation
Reference	symbols and glossary, keyboard and mouse, questions and problems, references, credits and license

Rusteau-1D is an independent project. It is not affiliated with or endorsed by PC-Progress or the authors of HYDRUS. The name HYDRUS is used only to identify the program whose numerical methods Rusteau follows.

Literature cited in this topic

van Genuchten, M. Th. (1980). A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Science Society of America Journal 44(5): 892–898. doi:10.2136/sssaj1980.03615995004400050002x
Šimůnek, J., M. Šejna, H. Saito, M. Sakai, and M. Th. van Genuchten (2009). The HYDRUS-1D Software Package for Simulating the One-Dimensional Movement of Water, Heat, and Multiple Solutes in Variably-Saturated Media, Version 4.08. HYDRUS Software Series 3, Department of Environmental Sciences, University of California Riverside, Riverside, CA, USA, 330 pp. https://www.pc-progress.com/en/Default.aspx?h1d-description
Šimůnek, J., M. Šejna, H. Saito, M. Sakai, and M. Th. van Genuchten (2013). The HYDRUS-1D Software Package for Simulating the One-Dimensional Movement of Water, Heat, and Multiple Solutes in Variably-Saturated Media, Version 4.17. HYDRUS Software Series 3, Department of Environmental Sciences, University of California Riverside, Riverside, CA, USA, 307 pp. https://www.pc-progress.com/en/Default.aspx?hydrus-1d

All sources: References.