Controls
Material & Time
Thermal conductivity k
k =
1.00
(α normalized to k)
Simulation speed (substeps/frame)
dt is kept ≤ stable; higher speed = more substeps each frame.
Grid
Show grid overlay
Cells in X (Nx)
Cells in Y (Ny)
Changing Nx/Ny rebuilds the solver immediately.
Mouse Heat Source
Strength
Radius (px)
Cool with mouse
Left mouse = source (or sink if checked). Release to stop.
Boundary Conditions
Left
Type
Temperature
Heat Flux
Value
Right
Type
Temperature
Heat Flux
Value
Top
Type
Temperature
Heat Flux
Value
Bottom
Type
Temperature
Heat Flux
Value
Heat flux values are “into the domain”: q = −k ∂T/∂n.
Utilities
Pause
Reset
dt (per substep):
• α:
Display
Auto-scale colors
Min T
Max T
Color scale:
—
Grid:
Click & drag to add/remove heat • Right-click disabled
T = 0.00
Legend follows auto/min–max above.