The Dust Cloud Challenge · Capstone deliverable

Arizona MegaFab
Parametric Simulator

An executable model translating the SysML state machine and parametric diagram into live computation. Adjust the six tunable inputs to observe how constraint blocks propagate values through the system and drive state transitions.

Model · MBSE v1.0 Analog · TSMC Fab 21 Frame · Double materiality GRI · 303 · 413 · 201
§ 01 Tunable inputs
Water recycle rate 65%

UPW reused on-site — primary lever for C1

Renewable share 25%

PPA and REC coverage — lever for C4

EJ engagement score 40

Community trust posture — lever for C6

Wafer starts per month 50,000

Production volume — drives C3 and downstream

Aquifer recharge rate 8 MGD

Natural replenishment — exogenous input

Grid reserve margin 15%

Spare capacity above peak — lever for C5

Scenario presets
§ 02 System state and cascade
Current fab state Stable
Production utilization 100%
Move a slider to see which constraint chain drives the state.
§ 03 Constraint blocks
C1 · Water
WaterBalance
deficit = withdrawal − recharge
Raw withdrawal
Deficit
C2 · Water
WaterStressIndex
stress = f(deficit / regional)
Index
Guard ≥ 0.4
C3 · Energy
FabLoad
load = wspm·kWh / 720000
Load
C4 · Energy
Scope2Emissions
market = loc · (1 − renew)
Location-based
Market-based
C5 · Energy
GridStress
stress = g(reserve_margin)
Index
Guard ≥ 0.4
C6 · Community
CommunityResistance
w₁·w + w₂·poll + w₃·EJ + w₄·inc
Resistance
C7 · Community
PermitRisk
logistic(a·r + b·w − c)
Risk
Guard ≥ 0.5
C8 · Economic
CHIPSDisbursement
max(0, 1 − δ · permit_risk)
Disbursement