Page 13 - ExtendSim User Guide
P. 13

Setting a Valve’s quantity goal...................................................................................................... 405 Setting a Valve’s duration goal...................................................................................................... 409 Setting hysteresis in a Valve.......................................................................................................... 411
Delaying flow with the Shift block........................................................................................413 Adding a Shift to a model ............................................................................................................. 413 Convey Flow block................................................................................................................413 Dialog settings............................................................................................................................... 414 Constraining rates.......................................................................................................................... 415 Convey Flow information ............................................................................................................. 415 When to avoid using the Convey Flow block ............................................................................... 417
Mixing Flow and Items ............................................................................................ 419 Controlling flow with items and items with flow ..................................................................420 Items controlling flow ................................................................................................................... 420
Flow controlling items .................................................................................................................. 421 Flow controlling items and items controlling flow ....................................................................... 422 Step The Flow Process model ....................................................................................................... 422
Using the Interchange block to mix items with flow .............................................................424 Behavioral rules............................................................................................................................. 424 The flow connector configuration ................................................................................................. 425 Item release conditions.................................................................................................................. 425 Interchange modes......................................................................................................................... 426 Converting between item and flow attributes ............................................................................... 430
Miscellaneous ........................................................................................................... 431 Precision.................................................................................................................................432 Biasing flow ...........................................................................................................................432
Bias order ...................................................................................................................................... 433 Bias block ...................................................................................................................................... 433 Merge and Diverge blocks ............................................................................................................ 434
Global and advanced options in the Executive ......................................................................436 Global options ............................................................................................................................... 436 Advanced options .......................................................................................................................... 438
Common connectors on discrete rate blocks .........................................................................440 Animation ..............................................................................................................................442 Tank ............................................................................................................................................... 442
Interchange .................................................................................................................................... 443 Valve.............................................................................................................................................. 443 Sensor ............................................................................................................................................ 445 Convey Flow ................................................................................................................................. 445
Advanced Topics ...................................................................................................... 447 What this chapter covers........................................................................................................448 LP technology ........................................................................................................................448
Overview ....................................................................................................................................... 448 The LP area ................................................................................................................................... 449 The sequence of events ................................................................................................................. 450 Types of information provided to the Executive ........................................................................... 451 The LP calculation......................................................................................................................... 454
Upstream supply and downstream demand ...........................................................................455 Definition ...................................................................................................................................... 455 Requirements for the supply/demand calculation ......................................................................... 455 Cautions when using potential rates.............................................................................................. 455
Messaging in discrete rate models .........................................................................................459 Block messages ............................................................................................................................. 459


































































































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