Numerical Simulation of Turbulent Driven Secondary Flow in a 90° Bend Pipe

Abstract:

The numerical simulation of the developing turbulent flow through a three-dimensional curved pipe with strong curvature is presented. This numerical simulation is to investigate the flow structure of pipe-flow through a 90° bent pipe with the aid of RNG k-ε turbulence model, which had been well validated for high screwed curvature flow. Dean Motion downstream of the bend are found and presented. And the numerical result demonstrates that Dean motions co-exist with large scale swirling motions inside the bend pipe. Snapshot of velocity and pressure reveals that the structures found upstream of the bend persist after the bend and survive the strong secondary motions induced by the pipe curvature.

• Periodical: Advanced Materials Research (Volumes 765-767)
• Pages: 514-519
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.765-767.514
• Online since: September 2013
• Authors: Min Chen, Zhi Guo Zhang
• Keywords: 90° Bend Pipe, Dean Motions, Numerical Simulation, Secondary Flow

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