Source Card (W)

This card allows the user to control time-dependent sources and/or sinks of water and solute mass. By definition, sinks are negative and sources are positive. Sources can be specified for interior or boundary nodes, but cannot be specified for an inactive node. Sources/sinks are functionally equivalent to a Neumann type boundary condition.  Sources are time varying; however, unlike boundary conditions, multiple sources may be applied to a node during the same time period.  

• General concepts describing the use of this card are provided on the Card Description page.

• Descriptions of the various source type options are provided on the Card Options page.

• Formatting instructions for specifying sources are provided on the Card Syntax page.

• Examples of Source Cards for STOMP-W with and without solutes and geochemistry are provided on the Card Examples page.