NEK5000

A fast and scalable open-source spectral element solver for CFD

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Flow in a bent pipe

The flow in a bent pipe, Re_\tau=360 and curvature 0.1. From left to right: Near-wall structures evinced by negative lambda_2, wall-shear stress and Lagrangian particles. Ref: Noorani at al., Int J. Heat Fluid Flow 2013, and Noorani et al., J. Fluid Mech., submitted 2015.
particles

Turbulent diffuser flow

Snapshot of the turbulent diffuser flow at Re=10000 showing the complex chaotic and turbulent flow. Light gray: separated flow, dark gray: attached flow. Ref: Malm et al. J. Fluid Mech. 2012.
diffuser