Computational Fluid Mechanics Benchmarks CFD Benchmarks Benchmark on a fluid flow around a rigid obstacle, initially proposed by Turek and Hron. We simulate a fluid flow. Laminar, Isothermal Backward Facing Step Benchmark Separation and reattachment along a backward facing step. Oscillating cylinder Numerical grid deformation Benchmark. Stokes Boundary Layer Benchmark Oscillatory motion of viscous boundary layer. Stokes flow in a pipe Benchmark (flow of a fluid in a pipe). Cases Backward Step We simulate the 2D and 3D flows past a backward step. Cyclone We simulate a water flow in a realistic hydrocyclone geometry. Spring CFD We simulate a low Reynolds fluid flow in a coil spring shaped tube.