Flow analysis in right-angled pipes with different geometric shapes and parameters for sludge discharge in slime shield machines measured using a CFD-DEM method. Issue 5 (29th August 2020)

• Record Type: Journal Article
• Authors: Chen, Lumin; Liu, Kaixuan; Yao, Yufeng; Yao, Jun; Su, Zixue; Luo, Guofu
• Is Part Of: International journal for computational methods in engineering science and mechanics. Volume 21:Issue 5(2020)
• Page Start: 231
• Page End: 242
• Publication Date: 2020-08-29
• Subjects: Shield machine -- muddy water circulation -- solid-liquid coupling -- discrete element method -- computational fluid dynamics; Engineering -- Data processing -- Periodicals; Engineering mathematics -- Periodicals; Computer-aided engineering -- Periodicals; 620.00420285
• DOI: 10.1080/15502287.2020.1809554
• Languages: English
• ISSNs: 1550-2287

Abstract

Abstract: Mud and gravel deposition often occurs in circulation systems of pumps. In this paper, a liquid-solid coupling method combining CFD and DEM is proposed to study two-phase flow behavior of water, The flow characteristics of water-clay mud and the motion characteristics of gravel were simulated under different discharge pipe bending radii and geometry shape conditions. Numerical results showed that for a circular cross section pipe with a fixed bending radius, the collision times between the gravel particles and the pipe wall decreased with the increase of the bending radius.