Modifying Individual Scenarios

When first created, a scenario is identical to its parent. To modify or run a scenario, it must first be made in the current Workspace scenario by selecting it in the Scenario Tree on the Quick Access Panel, then double clicking it or choosing the Load Scenario option on the Right Click menu.  (The name of the current scenario is displayed in AFT xStream’s Status Bar and is indicated in the Quick Access Panel with a green check mark.)  Once a scenario is the current scenario, changes may be made to differentiate it from its parent using any of AFT xStream’s editing tools and functions. When an attribute is changed within a scenario it breaks the link for this attribute. Subsequent changes in the scenario’s ancestors will no longer affect this attribute.

Properties of a scenario that may differ from its ancestors include:

• Presence and location of objects - one may add or delete pipes and junctions within a scenario and the workspace locations may vary from scenario to scenario

• Pipe and junction properties - all values set in the Properties windows

• Fluid - fluid selected

• AFT Arrow Steady Solution - solution method, tolerances, relaxation

• Output Control - Output window content and formatting

• MOC Transient - The transient settings can be varied between scenarios

• Library Manager - The connected database content can be varied between scenarios

Model Data Control and User Options apply to all scenarios.