A K-? two-equation turbulence model for the solid-liquid two-phase flows

1996 ◽  
Vol 17 (6) ◽  
pp. 523-531 ◽  
Author(s):  
Liu Xiaobing ◽  
Cheng Liangjun
Keyword(s):  
Turbulence Model ◽  
Two Phase Flows ◽  
Two Phase ◽  
Solid Liquid

Simulation Study on Attrition to Centrifugal Sewerage Pump

2011 ◽  
Vol 474-476 ◽  
pp. 1107-1110 ◽  
Author(s):  
Jian Hua Liu ◽  
Ming Yi Zhu
Keyword(s):  
Turbulence Model ◽  
Simulation Study ◽  
Optimization Design ◽  
Simple Algorithm ◽  
Phase Flow ◽  
Two Phase ◽  
Pump Impeller ◽  
Flow Passage ◽  
Solid Liquid ◽  
Different Parts

By Means of Fluent 6.3，the paper simulated the solid-liquid two-phase flow to a type of centrifugal sewerage pump under different sand size and contain arenaceous concentration conditions, using Eulerian Mixture Model, adopting SIMPLE algorithm, k-ε-Ap turbulence model and partitioning non-structure hex grid in the area of flow passage in the pump. The paper analyzed wear characteristics in different parts of centrifugal sewage pump impeller and put forward some means to decrease attrition for impeller. The results can be as theoretical reference for the optimization design of the centrifugal sewage pumps

429 Numerical Simulations of Gas-Solid and Solid-Liquid Two Phase Flows by Using DEM

2008 ◽  
Vol 2008.21 (0) ◽  
pp. 500-501
Author(s):  
Mikio SAKAI ◽  
Yoshinori YAMADA ◽  
Yoshinori YAMADA ◽  
Seiichi KOSHIZUKA
Keyword(s):  
Numerical Simulations ◽  
Two Phase Flows ◽  
Two Phase ◽  
Solid Liquid

A two-equation turbulence model for two-phase flows

1983 ◽  
Vol 26 (4) ◽  
pp. 931 ◽  
Author(s):  
S. E. Elghobashi
Keyword(s):  
Turbulence Model ◽  
Two Phase Flows ◽  
Two Phase

scholarly journals Effect of Particles Accumulation on Drag Force in Solid-Liquid Two-Phase Flows.

1997 ◽  
pp. 147-151
Author(s):  
Yongdi Yang ◽  
Muneo Hirano ◽  
Kesayoshi Hadano ◽  
Atsuyuki Daido ◽  
Kunitoshi Watanabe
Keyword(s):  
Drag Force ◽  
Two Phase Flows ◽  
Two Phase ◽  
Solid Liquid

Numerical and experimental research on the erosion of solid-liquid two-phase flow in transport butterfly valve based on DEM method

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Benliang Xu ◽  
Zuchao Zhu ◽  
Zhe Lin ◽  
Dongrui Wang ◽  
Guangfei Ma
Keyword(s):  
Particle Size ◽  
Turbulence Model ◽  
High Speed ◽  
Two Phase Flow ◽  
Flow Characteristics ◽  
Phase Flow ◽  
Butterfly Valve ◽  
Two Phase ◽  
Content Type ◽  
Solid Liquid

Purpose The purpose of this paper is to analyze the mechanism of particle erosion in butterfly valve pipelines under hydraulic transportation conditions. The results will affect the sealing and safety of butterfly valve pipelines and hopefully serve as reference for the anti-erosion design of butterfly valve pipelines. Design/methodology/approach Through the discrete element method (DEM) simulation that considers the force between particles, the detached eddy simulation (DES) turbulence model based on realizable k-epsilon is used to simulate the solid-liquid two-phase flow-induced erosion condition when the butterfly valve is fully opened. The simulation is verified by building an experimental system correctness. The solid-liquid two-phase flow characteristics, particle distribution and erosion characteristics of the butterfly valve pipeline under transportation conditions are studied. Findings The addition of particles may enhance the high-speed area behind the valve. It first increases and then decreases with increasing particle size. With increasing particle size, the low-velocity particles change from being uniformly distributed in flow channel to first gathering in the front of the valve and, then, to gathering in lower part of it. Fluid stagnation at the left arc-shaped flange leads to the appearance of two high-speed belts in the channel. With increasing fluid velocity, high-speed belts gradually cover the entire valve surface by focusing on the upper and lower ends, resulting in the overall aggravation of erosion. Originality/value Considering the complexity of solid-liquid two-phase flow, this is the first time that the DEM method with added inter-particle forces and the DES turbulence model based on realizable k-epsilon has been used to study the flow characteristics and erosion mechanism of butterfly valves under fully open transportation conditions.

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