Fast-Slow Drain · tank view
The Damiron-Nastasi 2008 §2.1 model from the scsim engine: tank fills at +1.4 ton/min, drains at −1.1 ton/min when full, oscillating across 4 complete cycles + a partial 5th. Same trajectory rendered in three worldviews. Continuous recalculates at every time slice. Discrete event fires per integer-% change. Discrete rate fires only at rate-change events — 10 total (start + 4 FULL + 4 EMPTY + end).
Fast-Slow Drain · level over time
The Damiron-Nastasi 2008 §2.1 trajectory rendered by each worldview on the same time axis. Continuous is a sampled curve. Discrete event is a staircase (one step per integer-% change). Discrete rate is piecewise-linear with 10 anchor points — start, 4 FULL, 4 EMPTY, end. The fill slope (+0.7 ton/min after cycle 1) and drain slope (−1.1 ton/min) are asymmetric — that's the “fast slow” in the name.
Hamburger Duo · line view
The 5-stage hamburger line, modeled two ways simultaneously on the same simulated clock. DES (top, amber) tracks each individual burger as a discrete event. DRS (bottom, blue) models the flow as a continuous rate, with fill bars rising stage by stage.
Hamburger Duo · cumulative throughput
Same plant, same simulated clock, both worldviews. DES renders as a staircase (one step per burger arrival). DRS renders as a smooth diagonal (continuous flow). Both reach the same place at the same time — calibration holds.
Valdez Tanker · harbor view
Pipeline fills the storage tank as continuous flow. Tankers arrive at the harbor, dock at berths, load oil (the F2I transition — flow becomes item), and depart with their cargo. Tug pool and berth contention drive queueing. The Pritsker SLAM / SDI Industry pattern, restored with separate F2I + I2F primitives.
Valdez Tanker · event log
Discrete events on the item side — tankers arriving, docking, departing — interleaved with continuous flow on the tank side. The same DRS model emits both.