EPTT 2020

12th Spring School on Transition and Turbulence

Sand Erosion of Elbows in Series Oriented in Two Configurations for Multiphase Flows

Submission Author: Thiana Sedrez , Oklahoma
Co-Authors: Thiana Sedrez, Siamack Shirazi
Presenter: Thiana Sedrez

doi://10.26678/ABCM.EPTT2020.EPT20-0015

 

Abstract

Erosion of elbows in series has received more attention recently as many facilities have elbows in series with various orientations and installations. It has been observed from experiments that, for liquid-dominated flows when the elbows are placed in series and with a small distance between them, the maximum erosion takes place in the second elbow. In this work, Computational Fluid Dynamics (CFD) studies are performed for liquid-solid flow to determine which configuration would softer more erosion: when the second elbow orientation is horizontal-vertical downward (∏-type) or horizontal-vertical upward (Z-type). Then, experiments were conducted with the liquid-gas-solid flow for the configuration chosen in the previous step. Finally, new CFD simulations are performed for the same operational conditions as the experiments. From the CFD simulations, it was found that the worst-case scenario would happen when the second elbow has orientation horizontal-vertical upward (Z-type). However, the liquid-gas-solid experiments showed that actually, erosion in the second elbow of the Z-type configuration is less than the erosion in the second elbow of the ∏-type configuration and the liquid-gas-solid simulations corroborate the experimental results.

Keywords

Elbows in series, Erosion, liquid-solid flow, liquid-gas-solid flow

 

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