OBSERVATION CHAMBER / MVP
Observe a D2Q9 LBM wake experiment with a cylinder you can position while paused and keep fixed during observation runs, then compare the computed diagnostics.
D2Q9 LBM / CYLINDER WAKE
Observe a lattice Boltzmann calculation with a cylinder you can position while paused and keep fixed during each observation.SYSTEM NOTE
The cylinder position can be adjusted while paused. During an observation run it stays fixed so the wake metrics from D2Q9 LBM / BGK steps, sponge outlet, wall boundaries, and computed vorticity remain comparable.
OBSERVATION POINTS
D2Q9 LBM stores f0..f8 distributions and uses BGK relaxation toward equilibrium. nu = (tau - 0.5) / 3, Re = U D / nu, and vorticity is omega = dv/dx - du/dy. The cylinder uses bounce-back cells; its position can be adjusted while paused, then kept fixed during each observation with a left inlet, sponge outlet, and no-slip wall rows. Sign alternation count, first alternation step, oscillation amplitude, density drift, and finite status are diagnostic values from the computed field.
OBSERVATION GUIDE
Observe a cylinder wake developing from a D2Q9 LBM / BGK solver, then compare speed, vorticity, density drift, and sign alternation metrics.
This is a lightweight browser numerical experiment for observing a Karman vortex street. It is not a formal CFD solver, engineering design tool, wind-tunnel measurement, or proof that every condition produces a vortex street.
Runs inside the browser with no upload and no registration.
This observation LAB runs in your browser. It does not upload images, pointer traces, or input.
This chamber belongs to Fields in Motion.
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