A numerical investigation of incompressible viscous flow in a helical square annulus

作者：Nobari M R H^*; Kazemi S; Nourian V; Adib M

来源：Applied Mathematics and Computation, 2016, 277: 127-141.

DOI：10.1016/j.amc.2015.12.035

• Helical duct
• Annulus
• Incompressible flow
• Finite difference
• Projection method

In this article incompressible viscous flow in a helical square annulus is investigated numerically. The governing equations including the continuity and Navier-Stokes equations are written in an orthogonal helical coordinate system. This provides a uniform computational domain with a capability of using an exact second order finite difference method based on the projection algorithm to discretize the governing equations. The numerical results obtained study the effects of different non-dimensional parameters such as torsion, curvature, Reynolds number and aspect ratio on the secondary flow, axial velocity and friction factor in detail.

• 出版日期2016-3-20