Zero Order Source with Partitioning
HGS Feature, Command of The Week, HGS, Tutorials Veljko Zaric HGS Feature, Command of The Week, HGS, Tutorials Veljko Zaric

Zero Order Source with Partitioning

This post introduces the new zero-order source with partitioning command, added to HGS in revision 2291 (August 2021 update). This command enables more realistic modeling of gaseous species production in the unsaturated zone (USZ), considering the partitioning between the aqueous and gas phases based on solubility and water saturation.

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Simple Drain and Makeup Water Boundary Conditions
HGS Feature, Command of The Week, HGS, Tutorials Brayden McNeill HGS Feature, Command of The Week, HGS, Tutorials Brayden McNeill

Simple Drain and Makeup Water Boundary Conditions

This post describes how to use two boundary conditions that maintain a target head in the event that head would exceed (simple drain) or undershoot (makeup water) a specified value. Conceptually we can think of these boundary conditions as one-way boundary conditions where water can only enter (makeup water) or exit (simple drain) the system and are active only when the target value is reached. We find these two boundary conditions very useful when trying to represent water management scenarios.

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