Page 12 - ExtendSim User Guide
P. 12

Defining block units.......................................................................................................................365
Time units ......................................................................................................................................366 Changing the unit group ........................................................................................................366 Change Units block........................................................................................................................366
Rates, Constraints, and Movement........................................................................... 369 Blocks of interest ...................................................................................................................370 Rates, rate sections, and the LP area......................................................................................371
Types of rates.................................................................................................................................371 Rate sections ..................................................................................................................................373 Rate precision ................................................................................................................................374 LP area ...........................................................................................................................................374
Flow rules ..............................................................................................................................374 Critical and relational constraints ..................................................................................................375 Defining a critical constraint..................................................................................................376 Valve ..............................................................................................................................................377 Tank and Interchange.....................................................................................................................378 Convey Flow..................................................................................................................................379 Merge and Diverge ........................................................................................................................379
Meeting the critical constraint requirement ...........................................................................380 Valve or Convey Flow ...................................................................................................................380 Tank or Interchange .......................................................................................................................380 Merge or Diverge blocks ...............................................................................................................381
Comprehensive example........................................................................................................383 Rate sections ..................................................................................................................................383 Critical constraints.........................................................................................................................383 Relational constraint ......................................................................................................................383 Simulation’s impact on the effective rates.....................................................................................383
Merging, Diverging, and Routing Flow ................................................................... 385 Blocks of interest ...................................................................................................................386 Merging and diverging flow ..................................................................................................386
Mode table .....................................................................................................................................387 Select mode....................................................................................................................................387 Batch/Unbatch mode......................................................................................................................389 Proportional mode..........................................................................................................................390 Priority mode .................................................................................................................................390 Distributional mode .......................................................................................................................392 Sensing mode.................................................................................................................................393 Neutral mode..................................................................................................................................394
Features of the Merge and Diverge blocks ............................................................................395 Bias Order – resolving competing requests for flow .....................................................................395 Managing flow attributes...............................................................................................................396 Internal throw and catch ................................................................................................................396 Changing decision rules dynamically............................................................................................397
Throwing flow and catching flow remotely ..........................................................................398 Creating a throw/catch connection ................................................................................................399 Filter options to facilitate throw/catch connections.......................................................................399 Examples of throw and catch connections.....................................................................................400
Delaying Flow .......................................................................................................... 403 Blocks of interest ...................................................................................................................404 Controlling a Valve’s maximum rate .....................................................................................404
Using the Flow Control tab............................................................................................................405 Observing the maximum rate for a goal ........................................................................................405


































































































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