This widget allows you to parameterize and run a basic OpenLB simulation without downloading and compiling anything. It is a direct emscripten-based port of OpenLB's two-dimensional cylinder flow examples/laminar/cylinder2d following the common reference case by Schäfer and Turek.

You can modify the Reynolds number, change the resolution and toggle between velocity magnitude and pressure displays in various color maps.

The simulation runs in single-threaded JavaScript and the resulting performance in millions of cell updates per second (MLUPs) is displayed alongside the flow field.

Implementation: Pascal Sitter and Adrian Kummerländer