Instabilities of
flows in helical pipes Gelfgat, 2020, Fluid Dynamics
Research, |

centerline: curvature: torsion: Dimensionless curvature: Torsion to curvature ratio: Reynolds number: - known
only after the flow is calculated Assume
pressure gradient is known. D T Governing equations in Germano coordinates Comparison with experiments: friction factors Comparison with experiments: stability Disturbance modes and animations |