What is the Membrane Separation multi-solver?

Membrane Separation is a guided workflow that chains 1 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.

Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.

Chemistry & Materials Pack · Multi-Solver

Membrane Separation

Diffusion & flux. This multi-solver chains 1 solvers into a single guided workflow — run each step in order and carry the result forward.

Workflow steps

random-walk

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Random Walk

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Random Walk & DiffusionLive

Brownian motion · √t spreading

Controls

Speed1×

Hundreds of walkers start at the center and step randomly. The cloud spreads as √(time) — the signature of diffusion.

Presets

Walkers

Step size

▶ Run in Python

Data Inspector

Walkers400

Steps0

RMS distance0.0

Law⟨r²⟩ ∝ t

Governing equation

⟨ x ⟩ = 0, ⟨ x^{2} ⟩ = d N = 20 \approx 0.0

Reading this result: With 400 walkers the RMS distance grows as √(steps) — the defining signature of diffusion.

Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.

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Frequently asked questions

What is the Membrane Separation multi-solver?: Membrane Separation is a guided workflow that chains 1 individual PolySim solvers into one end-to-end analysis, piping each result into the next step.
Is it free to use?: Yes. Every step runs entirely in your browser using real numerics — no install, no account, no cloud cost. Custom or private solver packs are available as a paid service.