Flow and Transport in the centrifuge
From this webpage you can download special versions of computational modules of HYDRUS1D that can simulate direct and inverse problems involving water flow and solute transport in the centrifuge. You can download below a brief report describing implementation and verification of this implementation, as well as several test examples. Some of these examples were developed for the verification of these computational modules. Both computational modules were used by Šimůnek and Nimmo (2005).
Download a brief report describing implementation and verification.
Download the two computational modules for direct and inverse problems.
 Project Group: Centrifuge
 Description: Examples demonstrating the use of the special computational module of HYDRUS1D that considers flow and transport in centrifuge
 Availability: Download HYDRUS projects now (2.18 MB)
Project

Description

Steady1

Steady state flux, rotation = 50 1/s, radius = 100 cm, Verification direct example.

Steady1a

Steady state flux, rotation = 50 1/s, radius = 10 cm, Verification direct example.

Steady2

Steady state flux, rotation = 300 1/s, radius = 100 cm, Verification direct example.

Steady2a

Steady state flux, rotation = 300 1/s, radius = 10 cm, Verification direct example.

Onestep

Onestep outflow experiment, rotation = 100 1/s, radius = 10 cm, Verification direct example.

OnestepI

Onestep outflow experiment, rotation = 100 1/s, radius = 10 cm, Verification inverse example.

Onestep

Onestep outflow experiment, rotation = 100 1/s, radius = 10 cm, Verification inverse example.

OnestepS

Onestep outflow experiment, includes solute, rotation = 100 1/s, radius = 10 cm, Verification direct example.

Multistep

Multistep outflow experiment, sequential rotations = 10, 25, 50, and 75 1/s, radius = 200 cm, Verification direct example.

C15i

Problem c15 (Run 1) from Šimůnek and Nimmo (2005).

C15ix

Problem c15 (Run 1a) from Šimůnek and Nimmo (2005).

C17i

Problem c17 (Run 2) from Šimůnek and Nimmo (2005).

C17ix

Problem c17 (Run 2a) from Šimůnek and Nimmo (2005).

C18i

Problem c18 (Run 3) from Šimůnek and Nimmo (2005).

C18ix

Problem c18 (Run 3a) from Šimůnek and Nimmo (2005).

References
Šimůnek, J. and J. R. Nimmo, Estimating soil hydraulic parameters from transient flow experiments in a centrifuge using parameter optimization technique, Water Resources Research, 41(4), W04015, doi:10.1029/2004WR003379, 2005.